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ksz8061mnx/ksz8061mng 10base - t/100base - tx physical layer transceiver revision 1.0 quiet - wire and linkmd are registered trademark s of micrel, inc. micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 (408) 944 - 0800 ? fax + 1 (408) 474 - 1000 ? http://www.micrel.com august 27 , 2015 revision 1.0 general description the ksz8061mn is a single - chip 10base - t/100base - tx ethernet physical layer transceiver for transmission and reception of data over unshielded twisted pair (utp) cable. the ksz8061 mn features quiet - wire ? internal filtering to reduce line emissions. it is ideal for applications , such as automotive or industrial networks, where stringent radiated emission limits need to be met. quiet - wire can u se low - cost unshielded cable, where previously only shielded cable solutions were possible. the ksz8061mn also features enhanced immunity to environmental em noise. the ksz8061 mn offers the media independent interface (mii) for direct connection with mii - compliant ethernet mac p rocessors and switches. it is d esigned to exceed automotive aec - q100 and emc requirements, and features an extended temperature range of ? 40 c to + 105 c. the ksz8061 mnx is supplied in a 32 - lead , 5 mm 5 mm qfn or w qfn package, while the ksz8061mng is in a 48 - lead , 7mm 7mm qfn package . the ksz8061rnb and ksz8061rnd devices have an rmii interface and are described in a separate datasheet . datasheets and support documentation are available on micrels web site at: www. micrel.com . quiet-wire ? features ? quiet - wire programmable emi filter ? mii interface with mdc/mdio m anagement i nterface for register configuration ? on - chip termination resistors for the differential pairs ? linkmd ? + r eceive s ignal q uality i ndicator ? fast start - up and link ? low -p ower design with ieee 802.3az energy efficient ethernet s upport ? ultra - deep sleep standby mode : cpu or s ignal d etect activated. ? loopback modes for diagnostics ? programmable interrupt output applications ? industrial c ontrol ? vehicle on-b oard d iagnostics (obd) ? automotive g ateways ? camera and s ensor n etworking ? infotainment ___________________________________________________________________________________________________________ functional diagram downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 2 revision 1.0 ordering information part number temperature range package lead finish description ksz8061mn xi ? 40c to 85 c qfn - 32ld pb-free industrial t emperature ksz8061mn xv ( 1 ) ? 40c to 10 5c w qfn - 32ld pb-free aec- q100 automotive qualified ( extended t emperature ) ksz8061 mn gw ? 40c to 10 5c qfn - 48ld pb-free industrial extended t emperature ksz8061mn x-eval ( 1 ) 0c to 70c C C ksz8061mn x evaluation board (w ith ksz8061mn x device installed) note: 1. contact factory for availability . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 3 revision 1.0 revision history date change description/edits by: rev. 08 /27 /15 initial release of datasheet. by t. nelson. 1.0 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 4 revision 1.0 table of contents list of figures .......................................................................................................................................................................... 6 list of tables ........................................................................................................................................................................... 7 pin configurat ion C ksz8061mnx (32 - pin packages) ........................................................................................................... 8 pin description C ksz8061mnx (32 - pin packages) .............................................................................................................. 9 strapping options C ksz8061mnx (32 - pin packages) ....................................................................................................... 11 pin configuration C ksz8061mng (48 - pin package) .......................................................................................................... 12 pin description C ksz8061mng (48 - pin package) .............................................................................................................. 13 strapping options C ksz8061mng (48 - pin package) ......................................................................................................... 16 functional description: 10base - t/100base - tx transceiver ................................................................................................ 17 100base - tx transmit ....................................................................................................................................................... 17 100base - tx receive ........................................................................................................................................................ 17 scrambler/de - scrambler (100base - tx only) ................................................................................................................... 17 10base - t transmit ........................................................................................................................................................... 18 10base - t r eceive ............................................................................................................................................................ 18 sqe and jabber function (10base - t only, not supported in 32 - pin package) ................................................................ 18 pll clock synthesizer ...................................................................................................................................................... 18 auto - negotiation ............................................................................................................................................................... 18 quiet - wire ? filtering ............................................................................................................................................................ 19 fast link - up .......................................................................................................................................................................... 20 internal and external rx termination ................................................................................................................................... 20 mii interface .......................................................................................................................................................................... 20 mii signal def inition .......................................................................................................................................................... 21 transmit clock (txc) ................................................................................................................................................... 22 transmit enable (txen) .............................................................................................................................................. 22 transmit error (txer) .................................................................................................................................................. 22 transmit data [3:0] (txd[3:0]) ..................................................................................................................................... 22 receive clock (rxc) .................................................................................................................................................... 22 receive data valid (rxdv) .......................................................................................................................................... 22 receive data[3:0] (rxd[3:0]) ....................................................................................................................................... 22 receive error (rxer) .................................................................................................................................................. 22 carrier sense (crs) .................................................................................................................................................... 22 carrier sense (col) ..................................................................................................................................................... 22 mii signal diagram ........................................................................................................................................................... 23 back - to - back mode C 100mbps repeater ............................................................................................................................ 24 mii back - to - back mode .................................................................................................................................................... 24 back - to - back mode and 10base -t ................................................................................................................................... 25 mii management (miim) interface ......................................................................................................................................... 25 led output pins ................................................................................................................................................................... 26 interrupt (i ntrp) ................................................................................................................................................................... 26 hp auto mdi/mdi -x .............................................................................................................................................................. 26 straight cable ................................................................................................................................................................... 27 crossover cable ............................................................................................................................................................... 27 loopback modes ................................................................................................................................................................... 28 local (digital) loopback mode ......................................................................................................................................... 28 remote (analog) loopback .............................................................................................................................................. 29 linkmd ? cable diagnostics ................................................................................................................................................... 30 linkmd ? + enhanced diagnostics: receive signal quality indicator .................................................................................... 30 nand tree support .............................................................................................................................................................. 31 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 5 revision 1.0 nand tree i/o testing ..................................................................................................................................................... 32 power management .............................................................................................................................................................. 33 power saving mode .......................................................................................................................................................... 33 energy detect power down mode ................................................................................................................................... 33 power down mode ........................................................................................................................................................... 33 slow oscillator mode ........................................................................................................................................................ 33 ultra - de ep sleep mode .................................................................................................................................................... 33 non - volatile registers ...................................................................................................................................................... 33 signal detect (sigdet) and ultra - deep sleep mode .......................................................................................................... 34 cpu control method (miim interface) .............................................................................................................................. 34 automatic ultra - deep sleep method ................................................................................................................................ 34 transmit direction control ................................................................................................................................................ 36 receive direction control ................................................................................................................................................. 36 reference circuit for power and ground connections ......................................................................................................... 37 register map ......................................................................................................................................................................... 38 standard registers ............................................................................................................................................................... 39 standard register description .......................................................................................................................................... 39 mmd registers ...................................................................................................................................................................... 51 mmd register write ......................................................................................................................................................... 51 mmd register read ......................................................................................................................................................... 51 mmd registers ...................................................................................................................................................................... 52 absolute maximum ratings .................................................................................................................................................. 53 operating ratings ................................................................................................................................................................ . 53 electrical characteristics ....................................................................................................................................................... 53 timing diagrams ................................................................................................................................................................... 59 mii transmit timing (10base - t) ....................................................................................................................................... 59 mii receive timing (10base - t) ........................................................................................................................................ 60 mii transmit timing (100base - tx) .................................................................................................................................. 61 mii receive timing (100base - tx) ................................................................................................................................... 62 auto - negotiation timing ................................................................................................................................................... 63 mdc/mdio timing ........................................................................................................................................................... 64 power - up/reset timing .................................................................................................................................................... 65 reset circuit .......................................................................................................................................................................... 66 reference cloc k C connection and selection ...................................................................................................................... 67 package information and recommended land pattern ....................................................................................................... 68 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 6 revision 1.0 list of figures figure 1. 32 - pin 5mm x 5mm qfn or wqfn ......................................................................................................................... 8 figure 2. 48 - pin 7mm x 7mm qfn ....................................................................................................................................... 12 figure 3. auto - negotiation flow chart .................................................................................................................................. 19 figure 4. ksz8061mn mii interface ..................................................................................................................................... 23 figure 5. ksz8061mn to ksz8061mn back - to - back repeater .......................................................................................... 24 figure 6. ksz8061mn back - to - back f or mii bus loopback ................................................................................................ . 24 figure 7. typical straight cable connection ........................................................................................................................ 27 figure 8. typical crossover cable connection .................................................................................................................... 27 figure 9. local (digital) loopback ........................................................................................................................................ 28 figure 10. remote (analog) loopback ................................................................................................................................ . 29 figure 11. lpi mode (refresh transmissions and quiet periods) ....................................................................................... 35 figure 12. ksz8061mnx power and ground connections ................................................................................................ . 37 figure 13. ksz8061mng power and ground conne ctions ................................................................................................ . 37 figure 14. mii transmit timing (10base - t) .......................................................................................................................... 59 figure 15. mii receive timing (10base - t) ........................................................................................................................... 60 figure 16. mii transmit timing (100base - tx) ...................................................................................................................... 61 figure 17. mii receive timing (100base - tx) ....................................................................................................................... 62 figure 18. auto - negotiation fast link pulse (flp) timing .................................................................................................. 63 figure 19. m dc/mdio timing ............................................................................................................................................... 64 figure 20. power - up/reset timing ....................................................................................................................................... 65 figure 21. recommended reset circuit ............................................................................................................................... 66 figure 22. recommended reset circuit for interfacing with cpu/fpga reset output ....................................................... 66 figure 23. 25mhz crystal/oscillator reference clock connection ...................................................................................... 67 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 7 revision 1.0 list of tables table 1. mii signal definition ................................................................................................................................................ 21 table 2. mii signal connection for mii back - to - back mode ................................................................................................ . 25 table 3. mii management frame format ............................................................................................................................. 25 table 4. mdi/mdi - x pin definition ........................................................................................................................................ 26 table 5. typical sqi values .................................................................................................................................................. 31 table 6. ksz8061mnx nand tree test pin order ............................................................................................................. 31 table 7. ksz8061mng nand tree test pin order ............................................................................................................. 32 table 8. standard registers ................................................................................................................................................. 38 table 9. mmd registers ....................................................................................................................................................... 39 table 10. mii transmit timing (10base - t) parameters ....................................................................................................... 59 table 11. mii receive timing (10base - t) parameters ........................................................................................................ 60 table 12. mii transmit timing (100base - tx) parameters ................................................................................................... 61 table 13. mii receive timing (100base - tx) pa rameters .................................................................................................... 62 table 14. mdc/mdio timing parameters ............................................................................................................................ 64 table 15. power - up/reset timing parameters ..................................................................................................................... 65 table 16. 25mhz crystal/reference clock selection criteria .............................................................................................. 67 table 17. recommended crystals ........................................................................................................................................ 67 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 8 revision 1.0 pin configuration C ksz8061mnx ( 32 -pin p ackages ) figure 1 . 32 - pin 5mm x 5mm qfn or wqfn downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 9 revision 1.0 pin description C ksz8061mnx (32 -pin p ackages ) pin number pin n ame typ e ( 2 ) pin function 1 xi i crystal/ oscillator/external clock input 25mhz 50ppm . this input references the avddh power supply. 2 xo o crystal feedback for 25mhz crystal this pin is a no connect if oscillator or external clock source is used. 3 a vddh pwr 3.3v supply for analog tx drivers and xi/xo oscillator circuit. 4 txp i/o physical transmit or receive signal (+ differential) transmit when in mdi mode; receive when in mdi - x mode 5 txm i/o physical transmit or receive signal (? differential) transmit when in mdi mode; receive when in mdi - x mode 6 rxp i/o physical receive or transmit signal (+ differential) receive when in mdi mode; transmit when in mdi - x mode 7 rxm i/o physical receive o r transmit signal (? differential) receive when in mdi mode; transmit when in mdi - x mode 8 a vddl pwr 1.2v (nominal) supply for analog core 9 vddl pwr 1.2v (nominal) supply for digital core 10 mdio ipu/opu management interface (mii m ) data i/o this pin has a weak pull - up, is open - drain like, and requires an external 1.0 k ? pull - up resistor. 11 mdc ipu management interface (mii m ) clock input this clock pin is synchronous to the mdio data pin. 12 rxer / qwf ipd/o mii receive error output config mode: the pull - up/pull - down value is latched as qwf at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 13 rxdv / config2 ipd/o mii receive data valid output config mode: the pull - up/pull - down value is latched as config2 at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 14 rxd3 / phyad0 ipu/o mii receive data output[3] ( 3 ) config mode: the pull - up/pull - down value is latched as phyaddr[0] at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. notes: 2. pwr = power supply. gnd = ground. i = input. o = output. i/o = bi - directional. ipu = input with internal pull - up (see electrical characteristics for value). ipd = input with internal pull - down (see electrical characteristics for value). ipu/o = input with internal pull - up (see electrical characteristics for v alue) during power - up/reset; output pin otherwise. ipd/o = input with internal pull - down (see electrical characteristics for value) during power - up/re set; output pin otherwise. ipu/opu = input and output with internal pull - up (see electrical characteristics for value). 3. mii mode: the rxd[3: 0] bits are synchronous with rxc . when rxdv is asserted, rxd[3:0] presents valid data to the mac device. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 10 revision 1.0 pin description C ksz8061mnx (32 -pin p ackages ) (continued) pin number pin n ame type ( 2 ) pin function 15 vddio pwr 3.3v, 2.5v or 1.8v supply for digital i/o 16 rxd2 / phyad1 ipd/o mii receive data output[2] ( 3 ) config mode: the pull - up/pull - down value is latched as phyaddr[1] at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 17 rxd1 / phyad2 ipd/o mii receive data output[1] ( 3 ) config m ode: the pull - up/pull - down value is latched as phyaddr[2] at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 18 rxd0 / autoneg ipu/o mii receive data output[0] ( 3 ) config mode: the pull - up/pull - down value is latched as autoneg at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 19 rxc / config0 ipd/o mii receive clock output config mode: the pull - up/pull - down value is latched as config0 at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 20 txc o mii transmit clock output 21 txen i mii transmit enable input 22 txd0 i mii transmit data input[0] ( 4 ) 23 txd1 i mii transmit data input[1] ( 4 ) 24 led0 / txer i pd /o led0 output (default) or mii transmit error input function of this pin is determined by bit [4] of register 1ch and by eee enable . the default function is led0. when ee e is on , or when 1ch.4 = 0, the function is txer. 25 txd2 i mii transmit data input[2] ( 4 ) 26 txd3 i mii transmit data input[3] ( 4 ) 27 crs / config1 ipd/o mii carrier sense output config mode: the pull - up/pull - down value is latched as config1 at the de - assertion of reset. see strapp ing options C ksz8061mnx (32 - pin packages) section for details. 28 rese t# ipu chip reset (active low) 29 intrp / nand_tree# ipu/o programmable interrupt output (active low (default) or active high) this pin has a weak pull - up, is open drain like, and requires an external 1. 0 k? pull - up resistor. config mode: the pull - up/pull - down value is latched as nand _ tree# at the de - assertion of reset. see strapping options C ksz8061mnx (32 - pin packages) section for details. 30 vddl pwr 1.2v (nominal) supply for digital (and analog) 31 rext i set phy transmit output current connect a 6.04 k? 1 % resistor from this pin to ground . 32 sigd et o signal d etect , active high bottom paddle gnd gnd ground notes: 4. mii mode: the txd[3:0] bits are synchronous with txc. when txen is asserted, txd[3:0] accepts valid data from the mac device. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 11 revision 1.0 strapping options C ksz8061mnx ( 32 -pin p ackages ) pin number pin n ame type ( 5 ) pin function 17 16 14 rxd1 / phyad2 rxd2 / phyad1 rxd3 / phyad0 ipd/o ipd/o ipu/o the phy address is latched at de - assertion of reset and is configurable to any value from 0 to 7. the default phy address is 00001. phy address bits [4:3] are set to 00 by default. 13 27 19 rxdv / config2 crs / config1 rxc / config0 ipd/o ipd/o ipd/o the config[2:0] strap - in pins are latched at the de - assertion of reset . config[2:0] mode 000 (default) mii normal mode auto mdi/mdi -x disabled 001 reserved C not used 0 10 mii normal mode auto mdi/mdi -x enabled 011 - 101 reserved C not used 110 mii back - to - back auto mdi/mdi -x enabled 111 reserved C not used 18 rxd0 / autoneg ipu/o auto- negotiation dis able pull- up (default) = dis able auto - negotiation pull- down = en able auto- negotiation at the de - assertion of reset, this pin value is inverted, and then latched into register 0h , bit [ 12 ]. 29 intrp / nand_tree# ipu/o nand tree mode pull- up (default) = disable nand tree (normal operation) pull- down = enable nand tree at the de - assertion of reset, this pin value is latched by the chip. 12 rxer / qwf ip d /o quiet - wire ? filtering disable pull- up = disable quiet - wire filtering pull- down (default) = enable quiet - wire filtering at the de - assertion of reset, this pin value is latched by the chip . note: 5. ipu/o = input with internal pull - up (see electrical characteristics for value) during power - up/reset; output pin otherwise. ipd/o = input with internal pull - down (see electrical characteristics for value) during power - up/reset; output pin otherwise. t he strap - in pin s are latched at the de - assertion of reset. in some systems, the mac mii receive input pins may drive high /low during power - up or reset, and consequently cause the phy strap - in pins on the mii signals to be latched to the unintended high/low states. in this case, external pull - up or pull - down resistor s ( 4. 7k ? ) should be added on these phy strap - in pins to ensure the intended values are strapped - in correctly . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 12 revision 1.0 pin configuration C ksz8061mng ( 48 -pin p ackage ) figure 2. 48 - pin 7mm x 7mm qfn downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 13 revision 1.0 pin description C ksz8061mng (48 -pin p ackage ) pin number pin n ame type ( 6 ) pin function 1 xi i crystal/oscillator/external clock input 25mhz 50ppm . this input references the avddh power supply. 2 xo o crystal feedback for 25mhz crystal this pin is a no connect if oscillator or external clock source is used. 3 avddh pwr 3.3v supply for analog tx drivers and xi/xo oscillator circuit. 4 gnd gnd ground 5 txp i/o physical transmit or receive signal (+ differential) 6 txm i/o physical transmit or receive signal (? differential) 7 gnd gnd ground 8 rxp i/o physical receive or transmit signal (+ differential) 9 rxm i/o physical receive or transmit signal (? differential) 10 gnd gnd ground 11 gnd gnd ground 12 avddl pwr 1.2v (nominal) supply for analog core 13 gnd gnd ground 14 vddl pwr 1.2v (nominal) supply for digital core 15 col / b-cast_off ipd/ o mii collision detect o utput config mode: the pull - up/pull - down value is latched as b- cast_off at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 16 mdio ipu/opu management interface (mii m) data i/o this pin has a weak pull - up, is open - drain like, and requires an external 1.0 k ? pull - up resistor. 17 mdc ipu management interface (miim) clock input this clock pin is synchronous to the mdio data pin. 18 rxer / qwf ipd/o mii receive error output config mode: the pull - up/pull - down value is latched as qwf at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 19 rxdv / config2 ipd/o mii receive data valid output config mode: the pull - up/pull - down value is latched as config2 at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. notes: 6. pwr = power supply. gnd = ground. i = input. o = output. i/o = bi - directional. ipu = input with internal pull - up (see electrical characteristics for value). ipd = input with internal pull - down (see electrical characteristics for value). ipu/o = input with internal pull - up (see electrical characteristics for value) during power - up/reset; output pin otherwise. ipd/o = input with internal pull - down (see electrical characteristics for value) during power - up/reset; output pin otherwise. ipu/opu = input and output with internal pull - up (see electrical characteristics for value). downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 14 revision 1.0 pin description C ksz8061mng (48 -pin p ackage ) (continued) pin number pin n ame type ( 6 ) pin function 20 rxd3 / phyad0 ipu/o mii receive data output[3] ( 7 ) config mode: the pull - up/pull - down value is latched as phyaddr[0] at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 21 gnd gnd ground 22 vddio pwr 3.3v, 2.5v or 1.8v supply for digital i/o 23 rxd2 / phyad1 ipd/o mii receive data output[2] ( 7 ) config mode: the pull - up/pull - down value is latched as phyaddr[1] at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 24 rxd1 / phyad2 ipd/o mii receive data output[1] ( 7 ) config m ode: the pull - up/pull - down value is latched as phyaddr[2] at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 25 rxd0 / duplex ipu/o mii receive data output[0] ( 7 ) config mode: the pull - up/pull - down value is latched as duplex at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 26 rxc / config0 ipd/o mii receive clock output config mode: the pull - up/pull - down value is latched as config0 at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 27 vddl pwr 1.2v (nominal) supply for digital core 28 gnd gnd ground 29 txc o mii transmit clock outp ut 30 txen i mii transmit enable input 31 txd0 i mii transmit data input[0] ( 8 ) 32 txd1 i mii transmit data input[1] ( 8 ) 33 vddio pwr 3.3v , 2.5v , or 1.8v supply for digital i/o 34 txer i pd mii transmit error input if the mac does not provide a txer output signal, this pin should be tied low. 35 txd2 i mii transmit data input[2] ( 8 ) 36 gnd gnd ground 37 txd3 i mii transmit data input[3] ( 8 ) 38 crs / config1 ipd/o mii carrier sense output config mode: the pull - up/pull - down value is latched as config1 at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. notes: 7. mii mode: the rxd[3: 0] bits are synchronous with rxc . when rxdv is asserted, rxd[3:0] presents valid data to the mac device. 8. mii mode: the t xd[3 :0] bits are synchronous with txc . when txen is asserted, txd[3: 0] accepts valid data from the mac device. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 15 revision 1.0 pin description C ksz8061mng (48 -pin package) (continued) pin number pin n ame type ( 6 ) pin function 39 led0 / autoneg ipu/ o led0 active low. its function is programmable; by default it indicates link/activity. config mode: the pull - up/pull - down value is latched as autoneg at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 40 led1 / speed ipu/ o led1 active low. it s function is programmable; by default it indicates link speed. config mode: the pull - up/pull - down value is latched as speed at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 41 vddio pwr 3.3v, 2.5v, or 1.8v supply for digital i/o 42 rese t# ipu chip reset (active low) 43 gnd gnd ground 44 intrp / nand_tree# ipu/o programmable interrupt output (active low (default) or active high) this pin has a weak pull - up, is open drain like, and requires an external 1. 0k ? pull - up resistor. config mode: the pull - up/pull - down value is latched as nand_tree# at the de - assertion of reset. see strapping options C ksz8061mng (48 - pin package) section for details. 45 vddl pwr 1.2v (nominal) supply for digital (and analog) 46 gnd gnd ground 47 rext i set phy transmit output current connect a 6.04 k ? 1 % resistor from this pin to ground. 48 sigd et o signal detect , active high bottom paddle gnd gnd ground downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 16 revision 1.0 strapping options C ksz8061mng ( 48 -pin p ackage ) pin number pin n ame type ( 9 ) pin function 24 23 20 rxd1 / phyad2 rxd2 / phyad1 rxd3 / phyad0 ipd/o ipd/o ipu/o the phy address is latched at de - assertion of reset and is configurable to any value from 0 to 7. the default phy address is 00001. phy address bits [4:3] are set to 00 by default. 19 38 26 rxdv / config2 crs / config1 rxc / config0 ipd/o ipd/o ipd/o the config[2:0] strap - in pins are latched at the de - assertion of reset. config[2:0] mode 000 (default) mii normal mode auto mdi/mdi -x disabled 001 reserved C not used 0 10 mii normal mode auto mdi/mdi -x enabled 011 - 101 reserved C not used 110 mii back - to - back auto mdi/mdi -x enabled 111 reserved C not used 39 led0 / autoneg ipu/o auto- negotiation en able pull- up (default) = en able auto - negotiation pull- down = dis able auto - negotiation at the de - assertion of reset, this pin value is latched into register 0h, bit [ 12 ]. 44 intrp / nand_tree# ipu/o nand tree mode pull- up (default) = disable pull- down = enable at the de - assertion of reset, this pin value is latched by the chip. 18 rxer / qwf ipd/o quiet - wire filtering disable pull- up = disable quiet - wire filtering pull- down (default) = enable quiet - wire filtering at the de - assertion of reset, this pin value is latched by the chip. 40 led1 / speed ipu/o speed mode pull- up (default) = 100mbps pull- down = 10mbps at the de - assertion of reset, this pin value is latched into register 0h, bit [ 13] as the speed select, and also is latched into register 4h (auto - negotiation advertisement) as the speed capability support. 25 rxd0 / duplex ipu/o duplex mode pull- up (default) = half - duplex pull- down = full - duplex at the de - assertion of reset, this pin value is inverted, and then latched into register 0h, bit [8 ]. 15 col / b-cast_off ipd/o broadcast off C for phy address 0 pull- up = phy address 0 is set as a unique phy address pull- down (default) = phy address 0 is set as a broadcast phy address at the de - assertion of reset, this pin value is latched by the chip. note: 9. ipu/o = input with internal pull - up (see electrical characteristics for value) during power - up/reset; output pin otherwise. ipd/o = input with internal pull - down (see electrical characteristics for value) during power - up/reset; output pin otherwise. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 17 revision 1.0 the strap - in pins are latched at the de - assertion of reset. in some systems, the mac mii receive input pins may drive high/low during power - up or reset, and consequently cause the phy strap - in pins on the mii signals to be latched to the unintended high/lo w states. in this case, external pull - ups or pull - down resistors (4. 7k ) should be added on these phy strap - in pins to ensure the intended values are strapped - in correctly. functional description : 10base - t/100base - tx transceiver the ksz8061 mn is an integrated fast ethernet transceiver that features quiet - wire ? internal filtering to reduce line emissions. when quiet - wire ? filtering is disabled, it is fully compliant with the ieee 802.3 s pecification. the ksz8061 also has high noise immunity. on the copper media side, the ksz8061 mn supports 10base - t and 100base - tx for transmission and reception of data over a standard cat -5 or similar unshielded twisted pair (utp) cable and h p a uto mdi/mdi - x for reliable detection of and correction for straight - through and crossover cables. on the mac processor side, the ksz8061 mn offers the media independent interface (mii) for direct connection with mii - compliant ethernet mac processors and switches. the mii management bus gives the mac processor complete access to the ksz8061 mn control and status registers. additionally, an interrupt pin eliminates the need for the processor to poll for phy status c hange. auto - negotiation and auto mdi/mdi - x can be disabled at power - on to significantly reduce initial time to link up. a s ignal detect pin ( sigdet ) is available to indicate when the link partner in inactive. an option is available for the ksz8061 mn to automatically enter ultra - deep sleep mode automatically when sigdet is de - asserted. ultra - deep sleep mode may also be entered by command of the mac processor. additional low power modes are available. 100base - tx transmit the 100base - tx transmit function performs parallel - to - serial conversion, 4b/5b encoding, scrambling, nrz - to - nrzi conversion, and mlt3 encoding and transmission. the circuitry starts with a parallel - to - serial conversion that converts the mii data from the mac into a 125mhz serial bit stream. the data and control stream is then converted into 4b/5b coding and followed by a scrambler. the serialized data is further converted from nrz - to - nrzi format, and then transmitted in mlt3 current output. the output current is set by a precision external resistor on rext for the 1:1 transformer ratio. the output signal has a typical rise/fall time of 4ns and complies with the a nsi tp - pmd standard regarding amplitude balance, overshoot, and timing jitter. the wave - shaped 10base - t output is also incorporated into the 100base - tx transmitter. 100base - tx receive the 100base - tx receiver function performs adaptive equalization, dc restoration, mlt3 - to - nrzi conversion, data and clock recovery, nrzi - to - nrz conversion, de - scrambling, 4b/5b decoding, and serial - to - parallel conversion. the receiving side starts with the equalization filter to compensate for inter - symbol interference (isi) over the twisted pair cable. since the amplitude loss and phase distortion is a function of the cable length, the e qualizer must adjust its characteristics to optimize performance. in this design, the variable equalizer makes an ini tial estimation based on comparisons of incoming signal strength against some known cable characteristics, and th en tunes itself for optimization. this is an ongoing process and self - adjusts against environmental changes such as temperature variations. next, the equalized signal goes through a dc restoration and data conversion block. the dc r estoration circuit is used to compensate for the effect of baseline wander and to improve the dynamic range. t he differential data conversion circuit converts the mlt3 format back to nrzi. the slicing threshold is also adaptive. the clock recovery circuit extracts the 125mhz clock from the edges of the nrzi signal. this recovered clock is then used to convert the nrzi signal into the nrz format. this signal is sent through the de - scrambler foll owed by the 4b/5b decoder. finally, the nrz serial data is converted to the mii format and provided as the input data t o the mac. scrambler/de - scrambler (100base - tx o nly) the scrambler is used to spread the power spectrum of the transmitted signal t o reduce emi and baseline wander . t he de - scrambler is needed to recover the scrambled signal . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 18 revision 1.0 10base - t transmit the 10base - t drivers are incorporated with the 100base - tx drivers to allow for transmission using the same magnetic. the drivers perform internal wave - shaping and pre - emphasis, and output 10base - t signals with a typical amplitude of 2 .5v peak. the 10base - t signals have harmonic contents that are at least 27db below the fundamental frequency when driven by an all - ones manchester - encoded signal. 10base - t receive on the receive side, input buffer and level detecting squelch circuits are employed. a differentia l input receiver circuit an d a pll performs the decoding function. the manchester - encoded data stream is separated into clock signal and nrz data. a s quelch circuit rejects si gnals with levels less than 400 mv or with short pulse widths to prevent noise at the rxp and rxm inputs from falsely trigger the decoder. when the input exceeds the squelc h limit, the pll locks onto the incoming signal and the ksz8 061 mn decodes a data frame. the receive clock is kept active during idle periods in between data reception. sqe and jabber function (10base - t o nly , not supported in 32 - pin package ) in 10base - t operation, a short pulse is put out on the col pin after each frame is tr ansmitted. this sqe test is required as part of the 10base - t transmit/receive path. if transmit enable (txen) is high for more than 20ms (jabbering), t he 10base - t transmitter is disabled and col is asserted high. if txen is then driven low for more than 250ms, the 10base - t transmitter is re - enabled and col is de - asserted (returns to low). pll clock synthesizer the ksz8061 mn generates all internal clocks and all external clocks for system timing from an external 25mhz crystal, oscillator, or reference clock. auto - negotiation the ksz8061 mn conforms to the auto - negotiation protocol, defined in clause 28 of the ieee 802.3 s pecification. auto - negotiation allows unshielded twisted p air (utp ) link partners to select the highest common mode of operation. during auto - negotiation, link partners advertise capabilities across the utp link to each other and then compar e their own capabilities with those they received from their link partners. the highest speed and duplex setting that is common to the two link partners is selected as the mode of operation. the following list shows the speed and duplex operation mode from highest to lowest priorit y. ? priority 1: 100base - tx, full - duplex ? priority 2: 100base - tx, half - duplex ? priority 3: 10base - t, full - duplex ? priority 4: 10base - t, half - duplex note that the 32 - pin device does not have a col pin on the mii interface, and therefore does not operate properly in half - duplex mode. if there is a possibility that the link partner will be operating in half - duplex mode, then the 48 - pin device should be used because it fully supports both half - and full - duplex. if t he ksz8061mn is using auto - negotiation , but its link partner is not, then the ksz8061 mn sets its operating speed by observing the signal at its receiver. this is known as parallel detection and allo ws the ksz8061mn to establish link by listening for a fixed signal protocol in the absence of auto - negotiation advertisement protocol. duplex is set by register 0h, bit [8] because the ksz8061mn cannot determine duplex by parallel detection. if auto - negotiation is disabled, the speed is set by register 0h, bit [13], and the duplex is set b y register 0h, bit [8]. for the 48 - pin device, these two bits are initialized at power - up/reset by strapping options on pins 40 and 25, respectively. for the 32 - pin device, the default is 100base - tx, full - duplex , and there are no strapping options to change this default . auto - negotiation is enabled or disabled by hardware pin strapping ( autoneg ) and by software (register 0h, bit [ 12 ]). by default, auto - negotiation is enabled in the 48 - pin device after power - up or hardware reset, but it may be disabled by pulling the led0 pin low at that time . for the 32 - pin device, auto - negotiation is disabled by default, but it may be enabled by pullin g the rxd0 pin low during reset . afterwards, auto - negotiation can be enabled or disabled by register 0h, bit [ 12 ]. when the link is 10base - t or the link partner is using auto - negotiation, and the ultra - deep sleep m ode is used, then the signal detect assert ion timing delay bit, register 14 h bit [ 1 ], must be set. the auto - negotiation link up process is shown in figure 3 . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 19 revision 1.0 figure 3 . auto - negotiation flow chart quiet-wire ? filtering quiet - wire is a feature to enhance 100base - tx emc performance by reducing both conducted and radiated emissions from the txp/m signal pair. it can be used either to reduce absolute emissions, or to enab le replacement of shielded cable with unshielded cable, all while maintaining interoperability with standard 10 0base - tx devices. quiet - wire filtering is imp lemented internally, with no additional external components required. it is enable d or disabled at power - up and reset by a strapping option on the rxer pin. once the ksz8061 is powered up, quiet - wire can be enabled or disable by writing to register 16h, bi t [12]. the default setting for quiet - wire reduces emissions primarily above 60mhz, with less reduction at l ower frequencies. several db of reduction is possible. signal attenuation is approximately equivalent t o increasing the cable length by 10 to 20 meters, thus reducing cable reach by that amount. for applications needing mor e modest improvement in emissions, the level of filtering can be reduced by writing a series of registers. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 20 revision 1.0 fast link-up link up time is normally determined by the time it takes to complete auto - negotiation. additional time may be added by the auto mdi/mdi - x feature. the total link up time from power - up or cable connect is typically a second or more. fast link - up mode significantly reduces 100base - tx link - up time by disabling both auto - negotiation and auto mdi/mdi - x, and fixing the tx and rx channels. this is done via the config[2:0] and autoneg strapping options. because these are strapping options, fast link - up is available immediately upon power - up. fast link - up is available only for 100base - tx link speed. to force the link speed to 10base - tx requires a register write. fast link - up is intended for specialized applications where both link partners are known in advance. the link must also be known so that the fixed transmit channel of one device connects to the fixed receive channel of the other devic e, and vice versa. [the tx and rx channel assignments are determined by the mdi/mdi - x strapping option on led2_0.] if a device in fast link - up mode is connected to a normal device ( auto - negotiate and auto - mdi/mdi - x), there will be no problems linking, but the speed advantage of fast link - up will be realized only on one end. internal and external rx termination by default, the rx differential pair is internally terminated. this minimizes board component count by eliminating all components between the ksz8061mn and the magnetics (transformer and common mode choke). the ksz8061mn has the option to turn off the internal termination and allow th e use of external termination. ex ternal termination does increase the external component count, but these external components can be of tighter tolerance s than the internal termination resistors. enabling or disabling of internal rx termination is controlled by register 14h, bit [ 2]. exte rnal termination should consist of a 50 resistor between each signal (rxp and rxm) and avdd. mii interface the media independent interface (mii) is compliant with the ieee 802.3 specification. it provides a common interface between mii phys and macs, and has the following key characteristics: ksz8061mng (48 - pin package) has full mii: ? pin count is 16 pins ( 7 pins for data transmission, 7 pins for data reception, and 2 pin s for carrier and collision indication). ? 10mbps and 100mbps data rates are supported at both half and full duplex. ? data transmission and reception are independent and belong to separate signal groups. ? transmit data and receive data are each 4 - bit wide, a nibble. ksz8061mnx (32 - pin package) has mii - lite: ? pin count is 15 pins ( no col signal) . ? full duplex only. half duplex is not supported. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 21 revision 1.0 mii signal definition table 1 describes the mii signals. refer to clause 22 of the ieee 802.3 specification for detailed inf ormation. table 1. mii signal definition mii signal name direction ( ksz8 061 mn signal ) direction (with respect to mac device ) description txc output input transmit clock (2.5mhz for 10mbps; 25mhz for 100mbps) txen input output transmit enable txd[3:0] input output transmit data [3:0] tx er input output transmit error (for eee function only) rxc output input receive clock (2.5mhz for 10mbps; 25mhz for 100mbps) rxdv output input receive data valid rxd[3:0] output input receive data [3:0] rxer output input, or (not required) receive error crs output input carrier sense col output input c ollision detection (ksz8061mng only) downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 22 revision 1.0 transmit clock (txc) txc is sourced by the phy. it is a continuous clock that provides the timing reference for tx en and txd[3:0]. when the phy links at 10mbps, txc is 2.5mhz. when the phy links at 100mbps, txc is 25mhz. transmit enable (txen) txen indicates the mac is presenting nibbles on txd[3:0] for transmission. it is as serted synchronously with the first nibble of the preamble and remains asserted while all nibbles to be transmitt ed are presented on the mii, and is negated prior to the first txc following the final nibble of a frame. txen transitions synchronously with respect to txc. transmit error (txer) txer is implemented for the energy efficient ethernet (eee) function only. it is asserted by the mac to enable the eees low power idle mode. the symbol error function for the transmitted frame onto the line is not implemented. txer transitions synchronously with respect to txc. transmit data [3:0] (txd[3:0]) when txen is asserted, txd[3:0] are the data nibbles accepted by the phy for transmission. txd[3:0] is 00 to indicate idle when txen is de - asserted. txd[3:0] transitions synchronously with respect to txc. receive clock (rxc) rxc provides the timing reference for rxdv, rxd[3:0], an d rxer. ? in 10mbps mode, rxc is recovered from the line while carrier is active. rxc is derived fr om the phys reference clock when the line is idle, or link is down. ? in 100mbps mode, rxc is continuously recovered from the line. if link is down, rxc is derived from the phys reference clock. when the phy links at 10mbps, rxc is 2.5mhz . when the phy links at 100mbps, rxc is 25mhz. receive data valid (rxdv) rxdv is driven by the phy to indicate that the phy is presenting recovered and decoded nibb les on rx d[3:0]. ? in 10mbps mode, rxdv is asserted with the first nibble of the sfd (star t of frame delimiter), 5d h , and remains asserted until the end of the frame. ? in 100mbps mode, rxdv is asserted from the first nibble of the preamble to the last nibble of the fr ame. rxdv transitions synchronously with respect to rxc. receive data[3:0] (rxd[3:0]) rxd[3:0] transitions synchronously with respect to rxc. for each clock period in which rxdv is asserted, rxd[3:0] transfers a nibble of recovered data from the phy. rece ive error (rxer) rxer is asserted for one or more rxc periods to indicate that a symbol error (e.g. a coding error that a phy is capable of detecting, and that may otherwise be undetectable by the mac sub - layer) was detected somewhere in the frame presentl y being transferred from the phy. rxer transitions synchronously with respect to rxc. carrier sense (crs) crs is asserted and de - asserted as follows: ? in 10mbps mode, crs assertion is based on the reception of valid preambles. crs de - assertion is based upon the reception of an end - of - frame (eof) marker. ? in 100mbps mode, crs is asserted when a start - of - stream delimiter or /j/k symbol pair is detected. crs is de - asserted when an end - of - stream delimiter or /t/r symbol pair is detected. additionally, the pma layer de - asserts crs if idle symbols are received without /t/r. carrier sense (col) col is asserted in half - duplex mode whenever the transmitter and receiver are simultaneously active on the line. this informs the mac that a collision has occurred during its transmission to the phy. col is supported only in the 48 - pin package option. therefore the 32 - pin package option does not support half duplex. when interfacing the 32 - pin device to a mac with a col input, that input should be pulled low. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 23 revision 1.0 mii signal diagram the ksz8061 mn mii pin connections to the mac are shown in figure 4 . figure 4 . ksz8061 mn mii interface downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 24 revision 1.0 back -to- back mode C 100mbps repeater two ksz8061 mn devices can be connected back - to - back to form a 100 base - tx to 100base - tx repeater. for testing purposes, it can also be used to loopback data on the mii bus by physically connecting the mii receive bus to the mii transmit b us. figure 5. ksz8061 mn to ksz8061 mn back -to- back repeater figure 6. ksz8061 mn back - to - back for mii bus loopback mii back - to - back mode in mii back - to - back mode, a ksz8061 mn interfaces with another ksz8061 mn to provide a complete 100mbps repeater solution. rxc and txc are not connected; they are both outputs. t he ksz8061 mn devices are configured to mii back - to - back mode after power - up or reset with the following: ? strapping pin config[2:0] set to 110 ? a common 25mhz reference clock connected to xi of both ksz8061mn devices ? mii signals connected as shown in table 2 . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 25 revision 1.0 table 2 . mii signal connection for mii back - to - back mode ksz80 6 1m n (100base -tx) [device 1] ksz80 6 1m n (100base -tx) [device 1 or 2] pin name pin type pin name pin type rxdv output txen input rxd3 output txd3 input rxd2 output txd2 input rxd1 output txd1 input rxd0 output txd0 input txen input rxdv output txd3 input rxd3 output txd2 input rxd2 output txd1 input rxd1 output txd0 input rxd0 output back - to - back mode and 10base -t if back - to - back mode is used and the line interface is operating at 10base - t, it is necessary to also set register 18h bit [6]. mii management (miim) interface the ksz8061 mn supports the ieee 802.3 mii management interface, also known as the management data input/output (mdio) interface. this interface enables an upper - layer device, like a mac processor, to monitor and control the state of the ksz8061mn . an external device with miim capability is used to read the phy status and/or config ure the phy settings. further details on the miim interface can be found in clause 22.2.4 of the ieee 802.3 s pecification. the miim interface consists of the following: ? a physical connection that incorporates the clock line (mdc) and the data line (mdio). ? a specific protocol that operates across the aforementioned physical connection that allows t he external controller to communicate with one or more phy devices. ? a set of 16 - bit mdio registers. supported registers [0:8] are standard registers, and their functions are defined per the ieee 802.3 specification. the additional registers are provided for expanded functionality. see register map section for details. t he ksz8061 mn supports unique phy addresses 1 to 7, and broadcast phy address 0. the broadcast address is defined per the ieee 802.3 s pecification, and can be used to write to multiple ksz8061mn devices simultaneously. the phyad[2:0] strapping pins are used to assign a unique phy address between 0 and 7 to each ksz8061 mn device. table 3 shows the mii management frame format . table 3 . mii management frame format preamble start of frame read/write op code phy address bits [4:0] reg address bits [4:0] ta data bits [15:0] idle read 32 1s 01 10 00aaa rrrrr z0 dddddddd_dddddddd z write 32 1s 01 01 00aaa rrrrr 10 dddddddd_dddddddd z downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 26 revision 1.0 led output pins the led0 and led1 pins indicate line status and are intended for driving leds. they are activ e low and can sink current directly from leds. by default, led0 indicates link /activity , and led1 indicates link speed. bits [5:4] in register 1fh allow the definition of these pins to be changed to link status and activity respectively. on the ksz8061mnx , pin 24 is a dual - function pin that can function either as led0 or txer. txer is needed only for eee. at reset, eee is disabled and this pin function is led0. if e ee is enabled and the link partner also supports eee , the pin becomes txer, and no led signal is available on the ksz8061mnx. the default function for led0 on the ksz8061mnx is link status, but it may be changed to link/activity . ? link status : the led indicates that the serial link is up. ? link/ activity: when the link is up but there is no traffic, the led wil l be on. when packets are being received or transmitted, the led will blink. ? activity: the led blinks when packets are received or transmitted. it is off when there is no activ ity. ? speed: when the link is up, the led is on to indicate a 100base - tx link, and is off to indicate a 10base - t link. interrupt (intrp) int rp is an interrupt output signal that may be used to inform the external controller that there has been a status update to the ksz8061 mn phy reg ister. this eliminates the need for the processor to poll the phy for status changes such as link up or down . register 1bh, bits [15:8] are the interrupt control bits to enable and disable the cond itions for asserting the intrp signal. register 1bh, bits [7:0] are the interrupt status bits to indicate which interrupt conditions have occurred. the interrupt status bits are cleared after reading register 1bh. register 1fh, bit [9] sets the int errupt level to active high or active low. the default is active low. hp auto mdi/mdi-x hp auto mdi/mdi - x configuration eliminates the confusion of whether to use a straight cable or a crossover cable between the ksz8061 mn and its link partner. this featur e allows the ksz8061mn to use either type of cable to connect with a link partner that is in either mdi or mdi - x mode. the auto - sense function detects transmit and receive pairs from the link partner and then assigns transmit and receive pairs of the ksz80 61 mn accordingly. a uto mdi/mdi - x is initially either enabled or disabled at a hardware reset by strapping the hardware pin (config[2:0]). afterwards, it can be enabled or disabled by register 1f h, bit [1 3 ]. when auto mdi/mdi - x is disabled, serial data is normally transmitted on the pin pair txp/txm, and data is received on rxp/rxm. however, this may be reversed by writing to register 1fh, bit [14]. an isolation transformer with symmetrical transmit and receive data paths is recomm ended to support auto mdi/ mdi - x. table 4 illustrates how the ieee 802.3 standard defines mdi and mdi -x. table 4. mdi/mdi - x pin definition mdi mdi -x rj - 45 pin signal rj - 45 pin signal 1 tx + 1 rx + 2 tx - 2 rx - 3 rx + 3 tx + 6 rx - 6 tx - downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 27 revision 1.0 straight cable a straight cable connects a n mdi device to a n mdi - x device, or a mdi - x device to a mdi device. figure 7 depicts a typical straight cable connection between a nic card (mdi device ) and a switch, or hub (mdi -x device ). figure 7. typical straight cable connection crossover cable a crossover cable connects a n mdi device to another mdi device, or a n mdi - x device to another mdi - x device. figure 8 depicts a typical crossover cable connection between two switches or hubs (two mdi - x devices). figure 8 . typical crossover cable connection downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 28 revision 1.0 loopback modes the ksz8061 mn supports the following loopback operations to verify analog and/or digital data paths. ? local (digital) loopback ? remote (analog) loopback local (digital) loopback mode this loopback mode is a diagnostic mode for checking the mii transmit and receive data paths between ksz8061mn and external mac, and is supported for both speeds (10/100 mbps) at full - duplex. the loopback data path is shown in figure 9 . 1. mii mac transmits frame s to ksz8061 mn . 2. frames are wrapped around inside ks z8061mn . 3. ksz8061 mn transmits frames back to mii mac. figure 9 . local (digital) loopback the following programming steps and register settings are used for local loopback mode. for 10/100 mbps loopback, 1. set register 0h, ? b it [14] = 1 // enable local loop back mode ? bit [ 13] = 0 /1 // s elect 10 mbps / 100mbps speed ? b it [12] = 0 // disable auto -n egotiation ? bit [8] = 1 // s elect full - duplex mode 2. set r egister 1ch, ? b it [ 5 ] = 1 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 29 revision 1.0 remote (analog) loopback this loopback mode checks the line (differential pairs, transformer, rj - 45 connector, ethernet cable) transmit and receive data paths between ksz8061mn and its link partner, and is supported for 100base - tx full - duplex mode only. the loopback data path is s hown in the following figure 10 . 1. fast ethernet (100base - tx) phy link partner transmits frames to ksz8061mn . 2. frames are wrapped around inside ksz8061mn . 3. ksz8061mn transmits frames back to fast ethernet (100base - tx) phy link partner. figure 10 . remote (analog) loopback the following programming steps and register settings are used for remote loopback mode. 1. set register 0h, ? bit [13] = 1 // select 100mbps speed ? b it [12] = 0 // disable auto -n egotiation ? bit [8] = 1 // s elect full - duplex mode or just simply auto - negot iate and link up at 100base - tx full - duplex mode with link partner 2. s et register 1f h, ? bit [2 ] = 1 // e nable remote loopback mode downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 30 revision 1.0 linkmd ? cable diagnostics the linkmd ? fu n ction utilizes time domain reflectometry (tdr) to analyze the cabling plant for common cabling problem s, such as open circuits, short circuits , and impedance mismatches. linkmd works by sending a pulse of known amplitude and duration down the mdi or mdi - x pair, and then analyzing th e shape of the reflected signal to determine the type of fault. the time duration for the reflected signal to return provides the approximate distance to the cabling fault. the linkmd function process es this tdr information and presents it as a numerical value that can be translated to a cable distance . linkmd is initiated by accessing the linkmd control/status register (register 1dh) and the phy control 2 register (register 1fh). the latter register is used to disable auto mdi/mdi - x and to select either mdi or mdi - x as the cable differential pair for testing. a two - step process is used to analyze the cable. the first step uses a small pulse (for short cables), while the second step uses a larger pulse (for long cables). the steps are shown here: for short cables: 1. write mmd address 1bh, register 0, bits [7:4] = 0x2. note that this is the power - up default value. 2. write register 13h , bit [15] = 0. note that this is the power - up default value. 3. write register 1fh. disable auto mdi/mdi - x in bit [13], and select either mdi or mdi - x in bit [14] to specify the twisted pair to test. 4. write register 1dh bit [15] to initiate the linkmd test. 5. read register 1dh to determine the result of the first step. bit [15] = 0 indicates that t he test is complete. after that, the result is read in bits [14:12]. remember the result. for long cables: 1. write mmd address 1bh, register 0, bits [7:4] = 0x7. 2. write register 13h , bit [15] = 1. 3. write register 1dh bit [15] to initiate the linkmd test. 4. read register 1dh to determine the result of the first step. bit [15] = 0 indicates that t he test is complete. after that, th e result is read in bits [14:12]. if either test reveals a short, then there is a short. if either test reveals an open, then th ere is an open. if both tests indicate normal, ten the cable is normal . linkmd ? + enhanced diagnostics: receive signal quality indicator the ksz8061mn provides a receive signal quality indicator (sqi) f eature that i ndicates the relative quality of the 100base - tx receive signal. it approximates a signal - to - noise ratio, and is affected by cable length, cable quality, and coupled of environmental noise. the raw sqi value is available for reading at any time from indirect register: mmd 1ch, register ach, bits [14:8]. a lower value indicates better signal quality, while a higher value indicates wors e signal quality. even in a stable configuration in a low - noise environment, the value read from this register ma y vary. the value should therefore be averaged by taking multiple readings. the update interval of the sqi register is 2s, so measurements taken more frequent ly than 2s will be redundant. in a quiet environment, six to ten readings are suggested for averaging. in a noisy environment, individual readings are unreliable, so a minimum of thirty readings are suggested for averaging. the sqi circuit does not include any hysteresis. table 5 lists t ypical sqi values for various cat5 cable lengths when linked to a typical 100base - tx device in a quiet environment. in a noisy environment or during immunity testing, the sqi value will i ncrease. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 31 revision 1.0 table 5. typical sqi values cat 5 cable length typical sqi value (mmd 1ch, register ach, bits [14:8] ) 10m 2 30m 2 50m 3 80m 3 100m 4 130m 5 nand tree support the ksz8061 mn provides parametric nand tree support for fault detection between chip i/os and board. t he nand tree is a chain of nested nand gates in which each ksz8061 mn digital i/o ( nand tree input ) pin is an input to one nand gate along the chain. at the end of the chain, the crs pin provides the output for the next nand gates. the nand tree test process includes: ? enabling nand tree mode ? pulling all nand tree input pins high ? driving low each nand tree input pin sequentially per the nand tree pin ord er ? checking the nand tree output to ensure ther e is a toggle high - to - low or low - to - high for each nand tree input driven low table 6 and table 7 list the nand tree pin order. table 6 . ksz8061mnx nand tree test pin order pin number pin name nand tree description 10 mdio input 11 mdc input 12 rxer input 13 rxdv input 14 rxd3 input 16 rxd2 input 17 rxd1 input 18 rxd0 input 19 rxc input 20 txc input 21 txen input 22 txd0 input 23 txd1 input 24 led0/ txer input 25 txd2 input 26 txd3 input 29 intrp input 27 crs output downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 32 revision 1.0 table 7 . ksz8061mng nand tree test pin order pin number pin name nand tree description 15 col input 16 mdio input 17 mdc input 18 rxer input 19 rxdv input 20 rxd3 input 23 rxd2 input 24 rxd1 input 25 rxd0 input 26 rxc input 29 txc input 30 txen input 31 txd0 input 32 txd1 input 34 led0/txer input 35 txd2 input 37 txd3 input 39 led0 input 40 led1 input 44 intrp input 38 crs output nand tree i/o testing the following procedure can be used to check for faults on the ksz8061 mn digital i/o pin connections to the board: 1. enable nand tree mode by intrp pin strapping option. 2. use board logic to drive all ksz8061 mn nand tree input pins high. 3. use board logic to drive each nand tree input pin, per ksz8061 mn nand t ree pin order, as follow s: a. t oggle the first pin (mdio) from high to low, and verify the crs pin switch from high to low to indicate that th e first pin is connected properly. b. leave the first pin (mdio) low. c. t oggle the second pin (mdc) f rom high to low , and verify the crs pin switch from low to high to indicate that the second pin is connected properly. d. leave the first pin (mdio) and the second pin (mdc) low. e. toggle the third pin (rxd3) from high to low , and verify the crs pin switch from high to low to indicate that the third pin is connected properly. f. continue with this sequence until all ksz8061 mn nand tree input pins have been toggled. each ksz8061 mn nand tree input pin must cause the crs output pin to toggle high - to - low or low - to - hig h to indicate a good connection. if the crs pin fails to toggle when the ksz8061 mn input pin toggles from high to low, the input pin has a fault. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 33 revision 1.0 power management the ksz8061 mn offers the following power management modes which are enabled and disabled by register control . power saving mode power saving mode is used to reduce the transceiver power consumption when the cabl e is unplugged. this mode does not interfere with normal device operation. it is enabled by writing a one to register 1fh, bit [ 10 ] , and is in effect when auto - negotiation mode is enabled and cable is disconnected (no link). in this mode, the ksz8061 mn shuts down all transceiver blocks except for the transmitt er, energy detect , a nd pll circuits. by default, p ower saving mode is disabled after power - up. energy detect power down mode energy d ete ct power down (edpd) m ode is used to further reduce the transceiver power consumption when the cable is unplugged , relative to p ower s aving m ode. this mode does not interfere with normal device operati on . it is enabled by writing a zero to register 18h, bit [11], and is in effect when auto - negotiation mode is enabled and cable is disconnected (no link). edpd m ode can be optionally enhanced with a pll off feature, which turn s off all ksz8061 mn transceiver blocks, except for transmitter and energy detect circuits. pll off is set by writing a one to register 10h, bit [4]. further power reduction is achieved by extending the time interval in between transmis sions of link pulses while in this mode . the periodic transmission of link pulses is needed to ensure two link partners in the same low power state and with auto mdi/mdi - x disabled can wake up when the cable is connected between them. by defa ult, energy detect power down m ode is disabled after p ower - up. power down mode power down m ode is used to power down the ksz8061mn when it is not in use after power - up. it is enabled by writing a one to register 0h, bit [ 11 ] . in this mode, the ksz8061mn disables all internal functions except the mii manageme nt interface . the ksz8061mn exits (disables) p ower down mode after register 0h, bit [ 11 ] is set back to zero. slow oscillator mode slow oscillator mode is used to disconnect the input reference crystal/clock on xi (pin 1) a nd select the on - chip slow oscillator when the ksz8061mn is not in use after power - up. it is enabled by writing a one to register 11h, bit [ 6 ]. slow oscillator m ode works in conjunction with power down mode to put the ksz8061mn in to a lowe r power state wit h all internal functions disabled, except for the mii management interface. to properly exit this mode and ret urn to normal phy operation, use the following programming sequence: 1. disable slow oscillator mode by writing a zero to register 11h, bit [ 6 ]. 2. disa ble power down m ode by writing a zero to register 0h, bit [11]. 3. initiate software reset by writing a one to register 0h, bit [15]. ultra - deep sleep mode ultra -d eep s leep m ode is used to achieve the lowest possible power consumption while retaining the ability to detect activity on the tx/rx cable pairs, and is intended for achieving negligible battery drain during long periods of inactivity. it is controlled by several register bits . ultra -d eep s leep m ode may be entered by writing t o a register, or it may be initiated automatically when s ignal d etect (sigd et ) is de - asserted. details are given in the signal detect (sigdet) and ultra - deep sleep mode section. in ultra -d eep s leep m ode , the ksz8061mn disables all internal functions and i/os except for the ultra - low power signal detect circuit and the signal d etect pin ( sigdet ), which are powered by vddio . for the lowest power consumption, the 1.2v supply (vddl and avddl) may be turned off externally. a hardware reset is required to exit ultra -d eep s leep m ode. non - volatile registers most of the logic circuitry of the ksz8061mn, including the status and con trol registers, is powered by the 1.2v supply. when the 1.2v supply is turned off in ultra -d eep s leep m ode, the content of the registers is lost. because of the importance of register 14h and bit [0] of register 13h, which control the various power modes, these bits are duplicated in a logic blo ck powered by the 3.3v supply. these register bits are therefore non - volatile while in ultra -d eep s leep m ode. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 34 revision 1.0 to access the non - volatile (3.3v) registers, bit [4] of register 14h must first be set. otherwise, writes to these registers will modify only the volatile versions of these registers and not the non - volatile versions. signal detect (sigdet) and ultra- deep sleep mode sig d et is an output signal which may be used for power reduction, either by directly turning off select ed power or by signaling to a host controller when no signal is detected on the line interface. it is asserted when sufficient energy is detected on either of the differential pair s , and is de - asserted when cable energy is not detected . the signal detecti on circuit consumes almost no power from the vddio supply, and does not use the 1.2v suppl y at all. ultra -d eep s leep m ode may be entered either automatically in unison with the signal d etect signal (a utomatic method) , or manually by setting a register bit (cpu c ontrol method) . the signal detect feature and ultra -d eep s leep m ode are controlled via multiple bits in register 14h: ? register 14h, bit [6] ultra -d eep s leep method: either a utomatic or cpu c ontrol . ? register 14h, bit [5] manually enter ultra -d eep s leep m ode when cpu c ontrol method is selected. ? register 14h, bit [4] enable r/w access to non - volatile versions of register 14h and bits [9:8] and [1:0] of register 13h. set this bit when bit [3] is set. ? register 14h, bit [3 ] enable ultra -d eep s leep m ode and sigdet ? register 14h, bit [1] extend timing for sigdet de - assertion and entry into ultra -d eep s leep m ode ? register 14h, bit [0] sigdet output polarity cpu control method (miim interface) in the cpu control method, the ksz8061mn drives sigdet signal to the cpu. sigdet defaults to force high , in order to not interfere with phy initialization by the cpu . at power - on, the ksz8061mn drives sigdet high, without consideration of cable energy level. during initialization, the c pu writes data 0x0058 to register 14h. ? bit [4] enables access to the non - volatile copy of register 14h. ? e nable u ltra -d eep s leep m ode and sigdet by setting register 14h, bit [3]. ? a utomatic u ltra -d eep s leep functionality is disabled by setting register 14h, bit [6]. sigdet is now enabled and will change state as cable energy changes. typically , in response to the de - assertion of sigdet , the cpu puts ksz8061mn into u ltra -d eep s leep mode by setting register 14h, bit [5]. to further reduce power, the cpu may disable the 1.2v supply to the ksz8061mn . the ksz8061mn will assert sigdet when energy is detected on the cable. to activate the ksz8061mn , the cpu enables the 1.2v supply and asserts hardware reset (r ese t#) to the ksz8061mn . because the ksz8061mn has been completely reset, the registers must also be re - initialized. alternative ly, i t is possible to maintain register access during u ltra -d eep s leep m ode by preserving the 1.2v power supply and setting register 13h, bit [0] to enable slow oscillator mode. ultra -d eep s leep m ode can then be exited by writing to register 14h. the 1.2v supply results in increased power consumption. automatic ultra - deep sleep method the board may be designed such that the ksz8061mn sigdet signal enables the 1.2v power supply to ksz80 61mn . at power - on, the ksz8061mn drives sigdet high, without consideration of cable energy level. during initialization, cpu writes data 0x001a or 0x0018 to register 14h . ? bit [4] enables access to the non - volatile copy of register 14h. ? enable u ltra -d eep s leep m ode and sigdet by setting register 14h, bit [3] . ? a utomatic u ltra -d eep s leep functionality is enabled by clearing register 14h, bit [6] . ? sigdet timing bit [1] must be set unless the link partner is not using auto - negotiation, auto - mdi/mdi - x is disable d , and link is at 100 mb p s. when the ksz8061mn detects signal loss, it automatically enters u ltra -d eep s leep m ode and de - asserts sigdet . sigdet may be used to disable the 1.2v supply. when the ksz8061mn detects a signal, it asserts sigdet (which enables the 1.2v supply) and automatically wakes up . sigdet may be used to wake up the cpu, which then re - initializes the ksz8061mn . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 35 revision 1.0 a lternatively, a hardware reset (r ese t#) will bring the ksz8061mn out of u ltra -d eep s leep m ode . note that the contents of register 14h and bits [9:8] and [1:0] of register 13h are preserved during u ltra -d eep s leep m ode , but are lost during hardware reset . energy efficient ethernet (eee) the ksz8061mn implements energy efficient ethernet (eee) for media independent interface (mii) i n accordance to the ieee 802.3az specification. implementation is defined around an eee - compliant mac on the host side and an eee - compliant link partner on the line side that support special signaling associated with e ee. eee saves power by keeping the voltage for the ac signal on the ethernet cable at approximately 0v peak - to - peak for as often as possible during periods of no traffic activity, while maint a inin g the link - up status. this is referred to as the low power idle (lpi) state. in the lpi state, the co pper link responds automatically when it receives traffic and resumes normal phy operation immediately, without blockage of traffic or loss of packet. this involves exiting lpi state and returning to normal 100mbps operating mode. wake - up time is <30s for 100base - tx. the lpi state is controlled independently for transmit and receive paths, allowing the lpi stat e to be active (enabled ) for: ? transmit cable path only ? receive cable path only ? both transmit and receive cable paths upon power - up or reset, the eee function is off. to enable the eee function for 100mbps mode, follow this programming sequence : 1. enable 100mbps eee mode advertisement by writing a 1 to mmd address 7h, register 3ch, bit [1] . 2. restart auto - negotiation by writing a 1 to standard register 0h, bit [9]. in 100base - tx eee operation, r efresh transmissions are used to maintain link and the q uiet periods are when the power savings takes place. approximately every 20 ms - 22m s a refresh transmission of 200 s - 220 s sent to the link partner . the r efresh transmissions an d q uiet periods are shown in figure 11 . figure 11 . lpi mode (refresh transmissions and quiet perio ds) downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 36 revision 1.0 transmit direction control the ksz8061mn enters the lpi state for the transmit direction when the attached eee - compliant mac de - asserts txen , asserts txer, and drives txd[3:0] to 0001. it remains in the transmit lpi state while mac maintains the stat es of these signals. the txc clock is not stopped because it is sourced from the phy and is used by the mac for mii transmit. when the attached eee - compliant mac changes any of the txen and txd[3:0] signals from the set lpi state value, the ksz8061mn exit s the lpi transmit state. receive direction control the ksz8061mn enters the lpi state for the receive direction upon receiving the p code bit pattern (sleep/r efresh) from the eee - compliant l ink partner. it then de - assert s rxdv , asserts rxer, and drives rxd[3:0] to 0001. the ksz8061mn remain s in the receive lpi state while it continues to receive the refresh from the link partner, so it will continue to maintain and drive the lpi output states for the mii receive signals to inform the attached mac that it is in the lpi receive state . additionally, after nine or more clock cycles in the receive lpi state, the ksz8061mn will stop the rxc clock output to the mac. when the ksz8061mn receives a non - p code bit pattern (non -r efresh), it exits the lpi state and sets the rxdv and rxd[3:0] signals accordingly for a normal frame or normal idle. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 37 revision 1.0 reference circuit for power and ground connections the ksz8061mn x and ksz8061mng require a minimum of two supply voltages. 1.2v is required for vddl and avddl. 3.3v is requir ed for vddio and avddh. optionally, vddio may be operated at 2.5v or 1.8v . figure 12 . ksz8061mnx power and ground connections figure 13 . ksz8061mng power and ground connections downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 38 revision 1.0 register map the register space within the ksz8061mn consists of two distinct areas. ? standard registers // direct register access ? mdio manageable device (mmd) registers // indirect register access table 8. standard registers register number ( hex ) description ieee- defined registers 0h basic control 1h basic status 2h phy identifier 1 3h phy identifier 2 4h auto- negotiation advertisement 5h auto- negotiation link partner ability 6h auto- negotiation expansion 7h auto- negotiation next page 8h auto- negotiation link partner next page ability 9h C ch reserved dh mmd access control register eh mmd access address data register fh reserved vendor - specific registers 10 h digital control 11 h afe control 0 12 h reserved 13h afe control 2 14h afe control 3 15h rxer counter 16h operation mode 17h operation mode strap status 18h expanded control 19h C 1ah reserved 1bh interrupt control/status 1ch function control 1dh linkmd ? control/status 1eh phy control 1 1fh phy control 2 the ksz8061 mn supports the following mmd device addresses and their associated register address es, which make up the indirect mmd registers. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 39 revision 1.0 table 9 . mmd registers device address (hex) register address (hex) description 7h 3ch eee advertisement 3dh link partner eee advertisement 1bh 0h afed control 1ch ach signal quality standard registers standard registers provide direct read/write access to a 32 - register address space, as defined in clause 22 of the ieee 802.3 standard. within this address space, the first 16 registers (0h to fh) are def ined according to the ieeee specification, while the remaining 16 registers (10h to 1fh) are defined specific to the phy vendor. standard register description address name description mode ( 10 ) defaul t register 0h C basic control 0.15 reset 1 = software reset 0 = normal operation this bit is self - cleared after a 1 is written to it. rw/sc 0 0.14 loopback 1 = loop - back mode (mii tx to mii rx. line side is disconnected.) 0 = normal operation loopback must be enabled both here and in register 1ch. rw 0 0.13 speed select 1 = 100mbps 0 = 10mbps this bit is ignored if auto - negotiation is enabled (register 0.12 = 1). at reset, this bit is set by strapping in pin 40 of the 48 - pin device. (the 32 - pin device has no strapping option for speed; this bit default is 1.) after reset, this bit may be overwritten. rw 1 0.12 auto- negotiation enable 1 = enable auto - negotiation process 0 = disable auto - negotiation process if enabled, auto - negotiation result overrides settings in register 0.13 and 0.8. rw set by autoneg strapping pin. see strapping options section for details. 0.11 power down 1 = power down mode 0 = normal operation if software reset (register 0.15) is used to exit power down mode (register 0.11 = 1), two software reset writes (register 0.15 = 1) are required. first write clears power down mode; second write resets chip and re - latches the pin strapping pin values. rw 0 0.10 isolate 1 = electrical isolation of phy from mii 0 = normal operation rw 0 note: 10. rw = read/write. ro = read only. sc = self - cleared. lh = latch high. ll = latch low. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 40 revision 1.0 register description (continued) address name description mode ( 10 ) default 0.9 restart auto - negotiation 1 = restart auto - negotiation process 0 = normal operation. this bit is self - cleared after a 1 is written to it. rw/sc 0 0.8 duplex mode 1 = full - duplex 0 = half - duplex at reset, the duplex mode is set by strapping in pin 25 of the 48 - pin device. this bit value is the inverse of the strapping input. (the 32 - pin device has no strapping option for duplex mode.) after reset, this bit may be overwr itten. rw 1 0.7 collision test 1 = enable col test 0 = disable col test note: col is not supported in the 32 - pin package. rw 0 0.6:0 reserved ro 000_0000 register 1h C basic status 1.15 100base - t4 1 = t4 capable 0 = not t4 capable ro 0 1.14 100base - tx full - duplex 1 = capable of 100mbps full - duplex 0 = not capable of 100mbps full - duplex ro 1 1.13 100base - tx half - duplex 1 = capable of 100mbps half - duplex 0 = not capable of 100mbps half - duplex ro 1 1.12 10base - t full - duplex 1 = capable of 10mbps full - duplex 0 = not capable of 10mbps full - duplex ro 1 1.11 10base - t half - duplex 1 = capable of 10mbps half - duplex 0 = not capable of 10mbps half - duplex ro 1 1.10:7 reserved ro 000_0 1.6 no preamble 1 = preamble suppression acceptable 0 = normal preamble required rw 1 1.5 auto- negotiation complete 1 = auto - negotiation process completed 0 = auto - negotiation process not completed ro 0 1.4 remote fault 1 = remote fault 0 = no remote fault ro/lh 0 1.3 auto- negotiation ability 1 = capable to perform auto - negotiation 0 = not capable to perform auto - negotiation ro 1 1.2 link status 1 = link is up 0 = link is down ro/ll 0 1.1 jabber detect 1 = jabber detected 0 = jabber not detected (default is low) ro/lh 0 1.0 extended capability 1 = supports extended capabilities registers ro 1 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 41 revision 1.0 register description (continued) address name description mode ( 10 ) default register 2h C phy identifier 1 2.15:0 phy id number assigned to the 3rd through 18th bits of the organizationally unique identifier (oui). kendin communications oui is 0010a1 (hex) ro 0022h register 3h C phy identifier 2 3.15:10 phy id number assigned to the 19th through 24th bits of the organizationally unique identifier (oui). kendin communications oui is 0010a1 (hex) ro 0001_01 3.9:4 model number six bit manufacturers model number ro 01_ 0 111 3.3:0 revision number four bit manufacturers revision number ro indicates silicon revision register 4h C auto - negotiation advertisement 4.15 next page 1 = next page capable 0 = no next page capability rw 1 4.14 reserved ro 0 4.13 remote fault 1 = remote fault supported 0 = no remote fault rw 0 4.12 reserved ro 0 4.11:10 pause [00] = no pause [10] = asymmetric pause [01] = symmetric pause [11] = asymmetric & symmetric pause rw 00 4.9 100base - t4 1 = t4 capable 0 = no t4 capability ro 0 4.8 100base - tx full - duplex 1 = 100mbps full - duplex capable 0 = no 100mbps full - duplex capability rw 1 4.7 100base - tx half - duplex 1 = 100mbps half - duplex capable 0 = no 100mbps half - duplex capability rw 1 4.6 10base - t full - duplex 1 = 10mbps full - duplex capable 0 = no 10mbps full - duplex capability rw 1 4.5 10base - t half - duplex 1 = 10mbps half - duplex capable 0 = no 10mbps half - duplex capability rw 1 4.4:0 selector field [00001] = ieee 802.3 rw 0_0001 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 42 revision 1.0 register description (continued) address name description mode ( 10 ) default register 5h C auto - negotiation link partner ability 5.15 next page 1 = next page capable 0 = no next page capability ro 0 5.14 acknowledge 1 = link code word received from partner 0 = link code word not yet received ro 0 5.13 remote fault 1 = remote fault detected 0 = no remote fault ro 0 5.12 reserved ro 0 5.11:10 pause [00] = no pause [10] = asymmetric pause [01] = symmetric pause [11] = asymmetric & symmetric pause ro 00 5.9 100base - t4 1 = t4 capable 0 = no t4 capability ro 0 5.8 100base - tx full - duplex 1 = 100mbps full - duplex capable 0 = no 100mbps full - duplex capability ro 0 5.7 100base - tx half - duplex 1 = 100mbps half - duplex capable 0 = no 100mbps half - duplex capability ro 0 5.6 10base - t full - duplex 1 = 10mbps full - duplex capable 0 = no 10mbps full - duplex capability ro 0 5.5 10base - t half - duplex 1 = 10mbps half - duplex capable 0 = no 10mbps half - duplex capability ro 0 5.4:0 selector field [00001] = ieee 802.3 ro 0_0001 register 6h C auto - negotiation expansion 6.15:5 reserved ro 0000_0000_000 6.4 parallel detection fault 1 = fault detected by parallel detection 0 = no fault detected by parallel detection ro/lh 0 6.3 link partner next page able 1 = link partner has next page capability 0 = link partner does not have next page capability ro 0 6.2 next page able 1 = local device has next page capability 0 = local device does not have next page capability ro 1 6.1 page received 1 = new page received 0 = new page not received yet ro/lh 0 6.0 link partner auto- negotiation able 1 = link partner has auto - negotiation capability 0 = link partner does not have auto - negotiation capability ro 0 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 43 revision 1.0 register description (continued) address name description mode ( 10 ) default register 7h C auto - negotiation next page 7.15 next page 1 = additional next page(s) will follow 0 = last page rw 0 7.14 reserved ro 0 7.13 message page 1 = message page 0 = unformatted page rw 1 7.12 acknowledge2 1 = will comply with message 0 = cannot comply with message rw 0 7.11 toggle 1 = previous value of the transmitted link code word equaled logic one 0 = logic zero ro 0 7.10:0 message field 11 - bit wide field to encode 2048 messages rw 000_0000_0001 register 8h C link partner next page ability 8.15 next page 1 = additional next page(s) will follow 0 = last page ro 0 8.14 acknowledge 1 = successful receipt of link word 0 = no successful receipt of link word ro 0 8.13 message page 1 = message page 0 = unformatted page ro 0 8.12 acknowledge2 1 = able to act on the information 0 = not able to act on the information ro 0 8.11 toggle 1 = previous value of transmitted link code word equal to logic zero 0 = previous value of transmitted link code word equal to logic one ro 0 8.10:0 message field ro 000_0000_0000 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 44 revision 1.0 register description (continued) address name description mode ( 10 ) default register dh C mmd access control register d.15:14 function 00 = address 01 = data, no post increment 10 = data, post increment on reads and writes 11 = data, post increment on writes only rw 00 d.13:5 reserved write as 0, ignore on read rw 00_0000_000 d.4:0 devad device address rw 0_0000 register eh C mmd access address data register e.15:0 address data if d.15:14 = 00, this is mmd devads address register. otherwise, this is mmd devads data register as indicated by the contents of its address register. rw 0000_0000_0000_0000 register 10h C digital control register 10.15:5 reserved rw 0000_0000_000 10.4 pll off in edpd mode this mode may optionally be combined with edpd mode for additional power reduction. 1 = pll is off in edpd mode 0 = pll is on in edpd mode rw 0 10.3:0 reserved rw 0000 register 11h C afe control 0 register 11.15:7 reserved rw 0000_0000_0 11. 6 slow oscillator mode this mode substitutes the 25mhz clock with a slow oscillator clock, to save oscillator power during power down. 1 = slow oscillator mode enabled 0 = slow oscillator mode disabled rw 0 11.5:0 reserved rw 00_0000 register 13h C afe control 2 register 13 .15 linkmd detector threshold sets the threshold for the linkmd pulse detector. use high threshold with the large linkmd pulse, and the low threshold with the small linkmd pulse. also see mmd address 1bh, register 0h bits [7:4]. 1 = enable high threshold comparator 0 = disable high threshold comparator rw 0 13.14:1 reserved rw 000_0000_0000_000 13 .0 slow oscillator mode for ultra - deep sleep mode this mode substitutes the 25mhz clock with a slow oscillator clock, to save oscillator power if register access is required during ultra deep sleep mode. note that the 1.2v supply is required if this mode is used. 1 = slow oscillator mode enabled 0 = slow oscillator mode disabled rw 0 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 45 revision 1.0 register description (continued) address name description mode ( 10 ) default register 14h C afe control register 3 14.15: 7 reserved rw 0000_0000_0 14.6 ultra - deep sleep m ethod 1 = cpu control method. entry into ultra - deep sleep mode determined by value of register bit 14.5 0 = automatic method. enter into ultra - deep sleep mode automatically when no cable energy is detected rw 0 14.5 manual ultra - deep sleep mode 1 = enter into ultra - deep sleep mode 0 = normal operation this bit is used to enter ultra - deep sleep mode when the cpu control method is selected in bit 14.6. to exit ultra - deep sleep mode, a hardware reset is required. rw 0 14.4 nv register access 1 = enable non - volatile copy of register 14h and bits [9:8] and [1:0] of register 13h 0 = disable access to non - volatile registers when ultra - deep sleep mode is enabled, this bit must be set to 1. rw 0 14.3 ultra - deep sleep mode and sigdet enable 1 = ultra - deep sleep mode is not enabled (but no t necessarily entered), and sigdet indicates cable energy detected 0 = ultra - deep sleep mode is disabled, and sigdet output signal is forced true. rw 0 14.2 disable rx internal t ermination 1 = disable rx internal termination 0 = enable rx internal termination [ has no effect on tx internal termination. ] rw 0 14.1 signal detect de- assertion t iming d elay when ultra - deep sleep m ode is enabled, this bit determines the delay from loss of cable energy to de - assertion of sigdet. when automatic method is selected fo r ultra - deep sleep mode, this delay also applies to powering down. 1 = increased d elay. t his setting is required to allow automatic exiting of ultra - deep sleep mode (automatic method) if the link partner auto - negotiation is enabled , if auto - mdi/mdi - x is enabled, or if linking at 10base -t. 0 = minimum delay . when using the automatic method for ultra - deep sleep , u se this setting only if the link partners auto - negotiation is disabled , auto - mdi/mdi - x is disabled, and linking is at 100base - tx. this s etting may also be used for cpu control method. rw 0 14 .0 signal detect p olarity 1 = sigdet is active low (low = signal detected) 0 = sigdet is active high (high = signal detected) rw 0 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 46 revision 1.0 register description (continued) address name description mode ( 10 ) default register 15h C rxer counter 15.15:0 rxer counter receive error counter for symbol error frames ro/sc 0000h register 16h C operation mode 16.15:13 reserved rw 000 16.12 qwf disable 1 = disable quiet - wire filtering 0 = enable quiet - wire filtering rw strapping input at rxer pin 16.11:0 reserved rw 0000_0000_0000 register 17h C operation mode strap status 17.15:13 phyad[2:0] strap- in status [000] = strap to phy address 0 [001] = strap to phy address 1 [010] = strap to phy address 2 [011] = strap to phy address 3 [100] = strap to phy address 4 [101] = strap to phy address 5 [110] = strap to phy address 6 [111] = strap to phy ad dress 7 ro 17.12: 9 reserved ro 17.8 qwf strap- in status 1 = strap to disable quiet - wire filtering 0 = strap to enable quiet - wire filtering ro strapping input at rxer pin 17.7 mii b - to -b strap- in status 1 = strap to mii back - to - back mode ro 17.6 reserved ro 17.5 nand tree strap- in status 1 = strap to nand tree mode ro 17.4:1 reserved ro 17.0 mii strap - in status 1 = strap to mii normal mode ro register 18h C expanded control 18.15:12 reserved rw 0000 18.11 energy detect power down mode disable 1 = disable energy detect power down (edpd) mode 0 = enable edpd mode rw 1 18.10 rx phy latency 1 = variable rx phy latency with no preamble suppression 0 = fixed rx phy latency with possible suppression of one preamble octet rw 0 18. 9 :7 reserved rw 00_0 18.6 enable 10bt preamble when in back - to - back mode and in 10base - t, this bit must be set. rw 0 18.5:0 reserved rw 00_0001 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 47 revision 1.0 register description (continued) address name description mode ( 10 ) default register 1bh C interrupt control/status 1b.15 jabber interrupt enable 1 = enable jabber interrupt 0 = disable jabber interrupt rw 0 1b.14 receive error interrupt enable 1 = enable receive error interrupt 0 = disable receive error interrupt rw 0 1b.13 page received interrupt enable 1 = enable page received interrupt 0 = disable page received interrupt rw 0 1b.12 parallel detect fault interrupt enable 1 = enable parallel detect fault interrupt 0 = disable parallel detect fault interrupt rw 0 1b.11 link partner acknowledge interrupt enable 1 = enable link partner acknowledge interrupt 0 = disable link partner acknowledge interrupt rw 0 1b.10 link down interrupt enable 1= enable link down interrupt 0 = disable link down interrupt rw 0 1b.9 remote fault interrupt enable 1 = enable remote fault interrupt 0 = disable remote fault interrupt rw 0 1b.8 link up interrupt enable 1 = enable link up interrupt 0 = disable link up interrupt rw 0 1b.7 jabber interrupt 1 = jabber occurred 0 = jabber did not occurred ro/sc 0 1b.6 receive error interrupt 1 = receive error occurred 0 = receive error did not occurred ro/sc 0 1b.5 page receive interrupt 1 = page receive occurred 0 = page receive did not occur ro/sc 0 1b.4 parallel detect fault interrupt 1 = parallel detect fault occurred 0 = parallel detect fault did not occur ro/sc 0 1b.3 link partner acknowledge interrupt 1 = link partner acknowledge occurred 0 = link partner acknowledge did not occur ro/sc 0 1b.2 link down interrupt 1 = link down occurred 0 = link down did not occur ro/sc 0 1b.1 remote fault interrupt 1 = remote fault occurred 0 = remote fault did not occur ro/sc 0 1b.0 link up interrupt 1 = link up occurred 0 = link up did not occur ro/sc 0 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 48 revision 1.0 register description (continued) address name description mode ( 10 ) default register 1ch C function control 1c.15:6 reserved rw 0000_0000_00 1c. 5 local loopback option 1 = enable local loopback 0 = disable local loopback local loopback must be enabled both here and in register 0h. rw 0 1c.4 led0/txer pin mode (ksz8061mnx pin 24) this control bit only affects the 32 - pin ksz8061mnx. it does not apply to the 48 - pin ksz8061mng. 1 = led0/txer pin functionality is determined by eee enable/disable. when eee is disabled (default), the pin is led0. when eee is enabled, the pin is txer. 0 = led0/txer pin function is forced to be txer. rw 1 1c.3:2 reserved rw 00 1c.1:0 reserved ro 00 register 1dh C linkmd ? control/status 1d.15 cable diagnostic test enable 1 = enable cable diagnostic test. after test has completed, this bit is self - cleared. 0 = indicates cable diagnostic test (if enabled) has completed and the status information is valid for read. rw/sc 0 1d.14:13 cable diagnostic test result [00] = normal condition [01] = open condition has been detected in cable [10] = short condition has been detected in cable [11] = cable diagnostic test has failed ro 00 1d.12 short cable indicator 1 = short cable (<10 meter) has been d etected by linkmd. ro 0 1d.11:9 reserved rw 000 1d.8:0 cable fault counter distance to fault ro 0_0000_0000 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 49 revision 1.0 register description (continued) address name description mode ( 10 ) default register 1eh C phy control 1 1e.15:10 reserved ro 0000_00 1e.9 enable pause (flow control) 1 = flow control capable 0 = no flow control capability ro 0 1e.8 link status 1 = link is up 0 = link is down ro 1e.7 polarity status 1 = polarity is reversed 0 = polarity is not reversed ro 1e.6 reserved ro 0 1e.5 mdi/mdi - x state 1 = mdi -x 0 = mdi ro 1e.4 energy detect 1 = presence of signal on receive differential pair 0 = no signal detected on receive differential pair ro 1e.3 phy isolate 1 = phy in isolate mode 0 = phy in normal operation [same as register bit 0.10] rw 0 1e.2:0 operation mode indication [000] = still in auto - negotiation [001] = 10base - t half - duplex [010] = 100base - tx half - duplex [011] = reserved [100] = reserved [101] = 10base - t full - duplex [110] = 100base - tx full - duplex [111] = reserved ro downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 50 revision 1.0 register description (continued) address name description mode ( 10 ) default register 1fh C phy control 2 1f. 15 hp_mdix 1 = hp auto mdi/mdi - x mode 0 = micrel auto mdi/mdi - x mode rw 1 1f. 14 mdi/mdi - x select when auto mdi/mdi - x is disabled, 1 = mdi - x mode transmit on rxp,rxm and receive on txp,txm 0 = mdi mode transmit on txp,txm and receive on rxp,rxm rw 0 1f . 13 pair swap disable 1 = disable auto mdi/mdi -x 0 = enable auto mdi/mdi -x rw value determined by strapping option 1f .12 reserved rw 0 1f.11 force link 1 = force link pass 0 = normal link operation this bit bypasses the control logic and allow transmitter to send pattern even if there is no link. rw 0 1f.10 power saving 1 = enable power saving 0 = disable power saving rw 0 1f.9 interrupt level 1 = interrupt pin active high 0 = interrupt pin active low rw 0 1f.8 enable jabber 1 = enable jabber counter 0 = disable jabber counter rw 1 1f.7:6 reserved rw 00 1f. 5 :4 led mode [00] = l ed1: speed, led0: link / activity [01] = led1: activity, led0: link [10] = reserved [11] = reserved rw 01 (ksz8061mnx) 00 (ksz8061mng) 1f.3 disable transmitter 1 = disable transmitter 0 = enable transmitter rw 0 1f.2 remote loopback 1 = remote (analog) loopback is enabled 0 = normal mode rw 0 1f.1 enable sqe test 1 = enable sqe test 0 = disable sqe test rw 0 1f.0 disable data scrambling 1 = disable scrambler 0 = enable scrambler rw 0 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 51 revision 1.0 mmd registers mmd registers provide indirect read/write access to up to 32 mmd device a ddresses with each device supporting up to 65,536 16 - bit registers, as defined in clause 22 of the ieee 802.3 specification. the ksz8061, however, uses only a sm all fraction of the available registers. see the register map section for a list of supported mmd device addresses and their associated register addresses. the following two standard registers serve as the portal registers to access the indir ect mmd reg isters. ? standard register dh C mmd access C control ? standard regist er eh C mmd access C register/data address name description mode ( 10 ) default register dh C mmd access control register d.15:14 function 00 = address 01 = data, no post increment 10 = data, post increment on reads and writes 11 = data, post increment on writes only rw 00 d.13:5 reserved write as 0, ignore on read rw 00_0000_000 d.4:0 devad these five bits set the mmd device address rw 0_0000 register eh C mmd access address data register e.15:0 address/ data when register dh, bits [15:14] = 00, this register contains the mmd devads address register. otherwise, this register contains the mmd devads data register as indicated by the contents of its address register. rw 0000_0000_0 examples: mmd register write write mmd C device address 7h, register 3ch = 0002h to enable eee advertisement. 1. write register dh with 0007h // set up register address for mmd C device address 7h. 2. write register eh with 003ch // select register 3ch of mmd C device address 7h. 3. write register dh with 4007h // select register data for mmd C device address 7h, register 3ch. 4. write register eh with 0002h // write value 0002h to mmd C device address 7h, register 3ch. mmd register read read mmd C device address 1fh, register 19h C 1bh 1. write register dh with 001fh // set up register a ddress for mmd C device address 1fh. 2. write register eh with 0019h // select register 19h of mmd C device address 1fh. 3. write register dh with 801fh // select register data for mmd C device address 1fh, register 19h // with post increments. 4. read register eh // read data in mmd C device address 1fh, register 19h. 5. read register eh // read data in mmd C device address 1fh, register 1ah. 6. read register eh // read data in mmd C device address 1fh, register 1bh. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 52 revision 1.0 mmd registers address name descriptio n mode ( 10 ) default mmd address 7h, register 3ch C eee advertisement 7.3c.15:8 reserved reserved ro 0000_0000 7.3c.7:3 reserved reserved rw 0000_0 7.3c.2 1000base - t eee capable 0 = 1000mbps eee is not supported rw 0 7.3c.1 100base - tx eee capable 1 = 100mbps eee capable 0 = no 100mbps eee capability this bit is set to 0 as the default after power - up or reset. set this bit to 1 to enable 100mbps eee mode. rw 0 7.3c.0 reserved reserved rw 0 mmd address 7h, register 3dh C link partner eee advertisement 7.3d.15:3 reserved reserved ro 0000_0000_0000_0 7.3d .2 link partner 1000base - t eee capable 1 = link partner is 1000mbps eee capable 0 = link partner is not 1000mbps eee capable ro 0 7.3d .1 link partner 100base - tx eee capable 1 = link partner is 100mbps eee capable 0 = link partner is not 100mbps eee capable ro 0 7.3d .0 reserved reserved ro 0 mmd address 1bh, register 0h C afed control register 1b.0.15:8 reserved reserved rw 0000_0000 1b.0.7:4 linkmd pulse amplitude sets the amplitude of the linkmd pulse. default value (0x2) is a small pulse. set to 0x7 for a large pulse. also see register 13h bit [15]. rw 0010 1b.0.3:0 reserved reserved rw 0000 mmd address 1ch, register ach C signal quality register 1c.ac.15 reserved reserved ro 0 1c.ac.14:8 signal quality indicator sqi indicates relative quality of the signal. a lower value indicates better signal quality. ro xxx_xxxx 1c.ac.7:0 reserved reserved ro 0000 _0000 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 53 revision 1.0 absolute maximum ratings ( 11 ) supply voltage (v ddio, av dd h) .................................. ? 0.5v to + 5.0v (v dd l, avddl ) ..................................... ? 0.5v to + 1.8 v input voltage (all inputs) .............................. ? 0.5v to + 5 .0v output voltage (all outputs) ......................... ? 0.5v to + 5 .0v lead temperature (soldering, 10sec.) ....................... 260c storage temperature (t s ) ......................... ? 55c to + 150c hbm esd rating ........................................................... 5kv operating ratings ( 12 ) supply voltage (av dd h @ 3.3v ) ........................... +3.135v to + 3.465v (v ddio @ 3.3v) ........................... +3.135v to + 3.465v (v ddio @ 2.5v ) ............................ + 2.375v to + 2.625 v (v ddio @ 1.8v) ( 13 ) ............................ +1.71v to + 1.89v (v ddl, avddl ) ................................ . +1. 14 v to + 1. 26v ambient temperature (t a , industrial) ...................................... C 40c to +85c (t a , extended) .................................... C 40c to +10 5c maximum junction temperature (t j m ax .) ................ 125c thermal resistance ( ja , 32 - qfn, 32 -w qfn ) ........ 34c /w thermal resistance ( jc , 32 - qfn, 32 -w qfn ) .......... 6 c /w thermal resistance ( ja , 48 - qfn ) .......................... 36c /w thermal resistance ( jc , 48 - qfn ) ............................ 9 c /w electrical characteristics ( 14 ) t a = 25c, bold values indicate C 40c t a +85c, unless noted. symbol parameter condition min . typ . max . units supply curren t for v ddl , av ddl i core 1.2v current for vddl + avddl no link, attempting to auto - negotiate 59 ma 100base- tx f ull - duplex at 100% utilization 45 ma 100base- tx link up, no traffic 45 ma 10base- t f ull - duplex at 100% utilization 17 ma 10base- t link up, no traffic 17 ma energy efficient ethernet (eee), both tx and rx in lpi state 14 ma energy detect power down (edpd) mode, no link partner (reg. 18h.11 = 0) 16 ma edpd mode with pll off, no link partner (reg. 18h.11 = 0; reg. 10h.4 = 1) 0.7 ma p ower d own mode (reg. 0 h .11 = 1) 0.5 ma p ower d own mode, mii isolate, slow oscillator mode (reg. 0 h .11 = 1 ; reg. 0h.10 = 1; reg. 11h.6 = 1 ) 0.05 ma ultra deep sleep mode with 1.2v (reg. 14h = 0x0078 ) 46 a ultra deep sleep mode, vddl and avddl = 0v (reg. 14h = 0x0078 ) 0 a notes: 11. exceeding the absolute maximum rating may damage the device. stresses greater than the absolute maximum rating may cause perm anent damage to the device. operation of the device at these or any other conditions above those specified in the operating sections of this specification is not implied. maximum conditions for extended periods may affect reliability. 12. the device is not guaranteed to function outside its operating ratings. 13. vddio may be operated at 1.8v only for the ksz8061mnx and ksz8061mng devices. the lowest allowed vdd io voltage for the ksz8061rnb and ksz8061rnd is 2.5v. 14. specification is for packaged product only. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 54 revision 1.0 electrical characteristics ( 14 ) (continued) t a = 25c, bold values indicate C 40c t a +85c, unless noted. symbol parameter condition min. typ. max. units supply curren t for v ddio i vddio_1.8 1.8v current for digital i/os no link, attempting to auto - negotiate 2.3 ma 100base- tx f ull - duplex at 100% utilization 3.8 ma 100base- tx link up, no traffic 2.3 ma 10base- t f ull - duplex at 100% utilization 0.5 ma 10base- t link up, no traffic 0.4 ma energy efficient ethernet (eee), both tx and rx in lpi state 1.3 ma energy detect power down (edpd) mode, no link partner (reg. 18h.11 = 0) 2.3 ma edpd mode with pll off, no link partner (reg. 18h.11 = 0; reg. 10h.4 = 1) 0.15 ma p ower d own mode (reg. 0 h .11 = 1) 0.17 ma p ower d own mode, mii isolate, slow oscillator mode (reg. 0 h .11 = 1 ; reg. 0h.10 = 1; reg. 11h.6 = 1 ) 0.04 ma ultra - deep sleep mode with 1.2v (reg. 14h = 0x0078 ) 43 a ultra - deep sleep mode, vddl and avddl = 0v (reg. 14h = 0x0078 ) 0.2 a i vddio_2.5 2.5v current for digital i/os no link, attempting to auto - negotiate 3.3 ma 100base- tx f ull - duplex at 100% utilization 5.9 ma 100base- tx link up, no traffic 3.3 ma 10base- t f ull - duplex at 100% utilization 1.0 ma 10base- t link up, no traffic 0.6 ma energy efficient ethernet (eee), both tx and rx in lpi state 1.9 ma energy detect power down (edpd) mode, no link partner (reg. 18h.11 = 0) 3.9 ma edpd mode with pll off, no link partner (reg. 18h.11 = 0; reg. 10h.4 = 1) 0.23 ma p ower d own mode (reg. 0 h .11 = 1) 0.23 ma p ower d own mode, mii isolate, slow oscillator mode (reg. 0 h .11 = 1 ; reg. 0h.10 = 1; reg. 11h.6 = 1 ) 0.10 ma ultra - deep sleep mode with 1.2v (reg. 14h = 0x0078 ) 100 a ultra - deep sleep mode, vddl and avddl = 0v (reg. 14h = 0x0078 ) 0.01 a downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 55 revision 1.0 electrical characteristics ( 14 ) (continued) t a = 25c, bold values indicate C 40c t a +85c, unless noted. symbol parameter condition min. typ. max. units supply curren t for v ddio i vddio_3.3 3.3v current for digital i/ os no link, attempting to auto - negotiate 6.5 ma 100base- tx f ull - duplex at 100% utilization 11 ma 100base- tx link up, no traffic 6.5 ma 10base- t f ull - duplex at 100% utilization 1.7 ma 10base- t link up, no traffic 1.1 ma energy efficient ethernet (eee), both tx and rx in lpi state 3.6 ma energy detect power down (edpd) mode, no link partner (reg. 18h.11 = 0) 6.6 ma edpd mode with pll off, no link partner (reg. 18h.11 = 0; reg. 10h.4 = 1) 0.56 ma p ower d own mode (reg. 0 h .11 = 1) 0.51 ma p ower d own mode, mii isolate, slow oscillator mode (reg. 0 h .11 = 1 ; reg. 0h.10 = 1; reg. 11h.6 = 1 ) 0.18 ma ultra - deep sleep mode with 1.2v (reg. 14h = 0x0078 ) 180 a ultra - deep sleep mode, vddl and avddl = 0v (reg. 14h = 0x0078 ) 0.01 a downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 56 revision 1.0 electrical characteristics ( 14 ) (continued) t a = 25c, bold values indicate C 40c t a +85c, unless noted. symbol parameter condition min. typ. max. units supply curren t for av dd h i avddh_3.3 3.3v current for transceiver no link, attempting to auto - negotiate 19 ma 100base- tx f ull - duplex at 100% utilization 24 ma 100base- tx link up, no traffic 24 ma 10base- t f ull - duplex at 100% utilization 28 ma 10base- t link up, no traffic 16 ma energy efficient ethernet (eee), both tx and rx in lpi state 10 ma energy detect power down (edpd) mode, no link partner (reg. 18h.11 = 0) 4.3 ma edpd mode with pll off, no link partner (reg. 18h.11 = 0; reg. 10h.4 = 1) 2.2 ma p ower d own mode (reg. 0 h .11 = 1) 1.0 ma p ower d own mode, mii isolate, slow oscillator mode (reg. 0 h .11 = 1 ; reg. 0h.10 = 1; reg. 11h.6 = 1 ) 0.18 ma ultra - deep sleep mode with 1.2v (reg. 14h = 0x0078 ) 0.5 a ultra - deep sleep mode, vddl and avddl = 0v (reg. 14h = 0x0078 ) 0.4 a downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 57 revision 1.0 electrical characteristics ( 14 ) (continued) t a = 25c, bold values indicate C 40c t a +85c, unless noted. symbol parameter condition min . typ . max . units cmos inputs (mdc, reset, txd, txen, txer) v ih input high voltage vddio = 3.3v 2.0 v vddio = 2.5v 1.5 vddio = 1.8v 1.1 v il input low voltage vddio = 3.3v 1.3 v vddio = 2.5v 1.0 vddio = 1.8v 0. 7 |i in | input current v in = gnd ~ vddio 10 a cmos out puts (col, crs, led, rxc, rxd, rxdv , rxer , sigdet, txc) v oh output high voltage vddio = 3.3v, i oh = 12 ma 2.4 v vddio = 2.5v, i oh = 6 ma 2. 0 vddio = 1.8v, i oh = 10 ma 1.4 v ol output low voltage vddio = 3.3v, i ol = 6 ma 0.4 v vddio = 2.5v, i ol = 5 ma 0.4 vddio = 1.8v, i ol = 10 ma 0.4 |i oz | output tri - state leakage v out = gnd ~ vddio 10 a all pull - up/ pull- down pins (including strapping pins) pu internal p ull -up resistance vddio = 3.3v, external 4.7k? pull - down 33 k ? vddio = 2.5v, external 4.7k? pull - down 47 k ? vddio = 1.8v, external 4.7k? pull - down 82 k ? pd internal p ull -d own resistance vddio = 3.3v, external 4.7k? pull - up 36 k ? vddio = 2.5v, external 4.7k? pull - up 48 k ? vddio = 1.8v, external 4.7k? pull - up 80 k ? 100base - tx transmit (measured differentially after 1:1 transformer) v o peak differential output voltage 100 ? termination across differential output 0.95 1.05 v v imb output voltage imbalance 100 ? termination across differential output 2 % t r , t f rise/fall time 3 5 ns rise/fall time imbalance 0 0.5 ns duty cycle distortion + 0.25 ns overshoot 5 % output jitter peak - to - peak 0.7 ns 10base - t transmit (measured differentially after 1:1 transformer) v p peak differential output voltage 100 ? termination across differential output 2.2 2.8 v jitter added peak - to - peak 3.5 ns t r , t f rise/fall time 25 ns 10base - t receive v sq squelch threshold 5mhz square wave 400 mv downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 58 revision 1.0 electrical characteristics ( 14 ) (continued) t a = 25c, bold values indicate C 40c t a +85c, unless noted. symbol parameter condition min. typ. max. units 100mbps mode C industrial applications parameters clock phase delay C xi input to mii txc output xi (25mhz clock input) to mii txc (25mhz clock output) delay, referenced to rising edges of both clocks. 15 20 25 ns t llr link loss reaction (indication) time link loss detected at receive differential inputs to phy signal indication time for each of the following: 1. for led mode 00, speed led output change from low (100mbps) to high (10mbps C default state for link - down). 2. for led mode 01, link led output change from low (link - up) to high (link - down). 3. intrp pin assertion for link - down status change. 4.8 s downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 59 revision 1.0 timing diagrams mii transmit timing (10base - t) figure 14 . mii transmit timing (10base - t) table 10 . mii transmit timing (10base - t) parameters timing parameter description min . typ . max . unit t p txc period 400 ns t wl txc pulse width low 200 ns t wh txc pulse width high 200 ns t su1 txd[3:0] setup to rising edge of txc 120 ns t su2 txen setup to rising edge of txc 120 ns t hd1 txd[3:0] hold from rising edge of txc 0 ns t hd2 txen hold from rising edge of txc 0 ns t crs1 txen high to crs asserted latency 600 ns t crs2 txen low to crs de - asserted latency 1.0 s downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 60 revision 1.0 mii receive timing (10base - t) figure 15 . mii receive timing (10base - t) table 11 . mii receive timing (10base - t) parameters timing parameter description min . typ . max . unit t p rxc period 400 ns t wl rxc pulse width low 200 ns t wh rxc pulse width high 200 ns t od ( rxdv, rxd[3:0], rxer) output delay from rising edge of rxc 205 ns t rlat crs to ( rxdv, rxd[3:0]) latency 7.2 s downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 61 revision 1.0 mii transmit timing (100base - tx) figure 16 . mii transmit timing (100base -tx) table 12 . mii transmit timing (100base - tx) parameters timing parameter description min . typ . max . unit t p txc period 40 ns t wl txc pulse width low 20 ns t wh txc pulse width high 20 ns t su1 txd[3:0] setup to rising edge of txc 10 ns t su2 txen setup to rising edge of txc 10 ns t hd1 txd[3:0] hold from rising edge of txc 0 ns t hd2 txen hold from rising edge of txc 0 ns t crs1 txen high to crs asserted latency 72 ns t crs2 txen low to crs de - asserted latency 72 ns downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 62 revision 1.0 mii receive timing (100base - tx) figure 17 . mii receive timing (100base -tx) table 13 . mii receive timing (100base - tx) parameters timing parameter description min . typ . max . unit t p rxc period 40 ns t wl rxc pulse width low 20 ns t wh rxc pulse width high 20 ns t od ( rxdv, rxd[3:0], rxer) output delay from rising edge of rxc 13 22 28 ns t rlat crs to ( rxdv , rxd[3:0] latency 170 ns downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 63 revision 1.0 auto - negotiation timing figure 18 . auto - negotiation fast link pulse (flp) timing table 14. auto - negotiation fast link pulse (flp) timing parameters timing parameter description min . typ . max . units t btb flp burst to flp burst 8 16 24 ms t flpw flp burst width 2 ms t pw clock/data pulse width 100 ns t ctd clock pulse to data pulse 55.5 64 69.5 s t ctc clock pulse to clock pulse 111 128 139 s number of clock/data pulse per flp burst 17 33 downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 64 revision 1.0 mdc/mdio timing figure 19 . mdc/mdio timing table 14 . mdc/mdio timing parameters timing parameter description min . typ . max . unit t p mdc period 400 ns t md1 mdio (phy input) setup to rising edge of mdc 10 ns t md2 mdio (phy input) hold from rising edge of mdc 4 ns t md3 mdio (phy output) delay from rising edge of mdc 5 note 15 ns note: 15. max imum high - to - low time is 25ns. max imum low - to - high time is determined by the external pull - up resistor. max imum low - to - high time is 25ns. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 65 revision 1.0 power - up/ reset timing the ksz8061 mn reset timing requirement is summarized in figure 20 and table 15 . figure 20 . power - up/ reset timing table 15 . power - up/ reset timing parameters parameter description min . max . units t vr supply voltage (v ddio , avdd , v ddl , avddl ) rise time 300 s t sr stable supply voltage ( vddio , avdd , vddl , avddl ) to reset high 10 ms t cs configuration setup time 5 ns t ch configuration hold time 5 ns t rc reset to strap - in pin output 6 ns the supply voltage ( vddio , avdd , vddl , avddl ) power - up waveform s should be monotonic, and the 300 s minimu m rise time is from 10% to 90%. for warm reset, the reset (r ese t#) pin should be asserted low for a minimum of 500 s. the strap - in pin values are read and update d at the de - assertion of reset. after the de - assertio n of reset, it is recommended to wait a minimum of 100s before starting progr amming on the miim (mdc/mdio) interface. downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 66 revision 1.0 reset circuit figure 21 shows a reset circuit recommended for powering up the ksz8061mn if reset is triggered by the power supply. figure 21 . recommended reset circuit figure 22 represents a reset circuit recommended for applications where reset is driven by another d evice (e.g., cpu or fpga). at power - on - reset, r, c and d1 provide the necessary ramp rise time to reset the ksz8061 mn . the rst_out_n from cpu/fpga provides the warm reset after power up. figure 22 . recommended reset circuit for interfacing with cpu/fpga reset output downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 67 revision 1.0 reference clock C connection and selection a crystal or external clock source, such as an oscillator, is used to pro vide the reference clock for the ksz8061mn . for the ksz8061 mn in all operating modes, the reference clock is 25mhz. the reference clock connections to xi (pi n 1) and xo (pin 2 ), and the reference clock selection criteria are provided in figure 23 and table 16 . figure 23 . 25mhz crystal/oscillator reference clock connection table 16 . 25mhz crystal/reference clock selection criteria characteristics value units frequency 25 mhz frequency tolerance (max) 50 ppm table 17 . recommended crystals manufacturer part number ndk ( 16 ) nx2016sa murata ( 17 ) xrcgb25m000f3a00r0 notes: 16. ndk: www.ndk.com . 17. murata: www.murata.com . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 68 revision 1.0 package information and recommended land pattern ( 18 ) 32 -pin 5 mm 5 mm w qf n note: 18. package information is correct as of the publication date. for updates and most current i nformation, go to www.micrel.com . downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 69 revision 1.0 package information and recommended land pattern ( 18 ) (continued) 32 -pin 5mm 5mm qfn downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 70 revision 1.0 package information and recommended land pattern ( 18 ) (continued) 48 -pin 7mm 7mm qfn downloaded from: http:///
micrel, inc. ksz8061mnx/ksz8061mng august 2 7 , 2015 71 revision 1.0 micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944 - 0800 fax +1 (408) 474 - 1000 web http://www.micrel.com micrel, inc. is a leading global manufacturer of ic solutions for the worldwide high pe rformance linear and power, lan, and timing & communications markets. the companys products include advanced mixed - signal, analog & power semiconductors; high - performance communication, clock manage ment, mems - based clock oscillators & crystal - less clock g enerators, ethernet swit ch es, and physical layer transceiver ics. company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and comp uter products. corporation headquarters and state - of -t he - art wafer fabrication facilities are located in san jose, ca, with regional sales and support offices and advanced technology design centers situated throughout the americas, europe , and asia. additionally , the company maintains an extensive network of distributors and reps worldwide. micrel makes no representations or warranties with respect to the accuracy or completenes s of the inf ormation furnished in this data sheet. this information is not intended as a warranty and micrel does not assume responsi bility for its use. micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. no license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. e xcept as provided in micrels terms and conditions of sale for such products, micrel assumes no li ability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of mi crel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright , or other intellectual property right. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or sy stems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. a purchasers use or sale of micrel products for use in life support appliances, devices or s ystems is a purchasers own risk and purchaser agrees to fully indemn ify micrel for any damages resulting from such use or sale. ? 2 015 micrel, incorporated. downloaded from: http:///

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