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| 08/15/00 ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver page 1 of 23 features ? international class 1 laser safety certi?ed ? 1.0625gb/s or 2.125gb/s data rates ? 1x and 2x (ansi) fibre channel compliant [1] ? short wavelength (sw) (distance 500m) ? long wavelength (lw) (distance 10,000m) ? gigabit electrical serial interface ? serial electrical ? light conversion ? lvttl signal-detect output ? ac coupling of pecl signals ? single +3.3v power supply ? withstand normal wave solder and aqueous spray cleaning ? ul & csa approved ? low bit error rate (< 10 -12 ) ? high reliability - afr < 0.01%/khr @50 c applications ? 2x gigabit fibre channel ? gigabit fibre channel ? client/server environments ? distributed multi-processing ? fault tolerant applications ? visualization, real-time video, collaboration ? channel extenders, data storage, archiving ? data acquisition description the 1.0625/2.125gbps serial optical converter (sff-pth-2125-sw/lw-2x5/2x6) is an integrated fiber optic transceiver that provides a high-speed serial link at a signaling rate up to 2.125gb/s. the sff-pth-2125-sw/lw-2x5/2x6 conforms to the american national standards institutes (ansi) fibre channel, fc-pi specification for short and long wavelength operation (200-m5-sn-i, 200-m6- sn-i,100-m5-sn-i,100-m6-sn-i, 200-sm-lc-l, and 100-sm-lc-l). the transceiver is insensitive to the data rate of the incoming electrical and optical signals. the trans- ceiver complies with the 1.0625gb/s fibre channel specification and 2.125gb/s fc standard without an external control signal. the sff-pth-2125-sw/lw-2x5/2x6 is ideally suited for fibre channel applications which include point to point links as well as fibre channel arbi- trated loop (fc-al). it can also be used for other serial applications where high data rates are required. this specification applies to a pin through hole (pth) module which has a 2 by 5 electrical connector pin configuration. the sff-pth-2125-sw uses a short wavelength (850nm) vcsel (vertical cavity surface emitting laser) source. this enables low cost data transmis- sion over optical fibers at distances up to 500m at 1.0625gb/s and 300m at 2.125gb/s. a 50/125 m m multimode optical fiber, terminated with an industry standard lc connector, is the preferred medium. (a 62.5/125 m m multimode fiber can be substituted with shorter maximum link distances.) the sff-pth-2125-lw uses a long wavelength (1310nm) edge emitting laser. this enables data transmission over optical fibers at distances up to 10,000m on a single mode (9/125 m m) optical fiber. encoded (8b/10b) [3], [4], gigabit/sec serial differen- tial pecl signals traverse a pth connector interfac- ing the sff-pth-2125-sw/lw-2x5/2x6 to the host card. the serial data modulates the laser and is sent out over the outgoing fiber of a duplex cable. incoming modulated light is detected by a photore- ceiver mounted in the lc receptacle. the optical signal is converted to an electrical one, amplified and delivered to the host card. this module is designed to work with industry standard 10b seri- alizer/deserializer modules. the sff-pth-2125-sw/lw-2x5/2x6 is a class 1 laser safe product. the optical power levels, under normal operation, are at eye safe levels. optical fiber cables can be connected and disconnected without shutting off the laser transmitter. .
ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 2 of 23 08/15/00 laser safety compliance requirements the sff-pth-2125-sw/lw-2x5/2x6 is designed and certified as a class 1 laser product. if the power supply voltage exceeds 4.0 volts, the transceiver may no longer remain a class 1 product. the sys- tem using the sff-pth-2125-sw/lw-2x5/2x6 must provide power supply over voltage protection that guarantees the supply does not exceed 4.0 volts under all fault conditions. caution: operating the power supply above 4.0v or otherwise operating the sff-pth-2125-sw/lw- 2x5/2x6 in a manner inconsistent with its design and function may result in hazardous radiation expo- sure, and may be considered an act of modifying or new manufacturing of a laser product under us reg- ulations contained in 21 cfr(j) or cenelec regu- lations contained in en 60825. the person(s) performing such an act is required by law to recertify and reidentify the product in accordance with the provisions of 21 cfr(j) for distribution within the united states, and in accordance with provisions of cenelec en 60825 (or successive regulations) for distribution within the cenelec countries or coun- tries using the iec 825 standard. esd notice it is advised that normal static precautions be taken in the handling and assembly of the sff-pth-2125- sw/lw-2x5/2x6 to prevent damage and/or degra- dation which may be introduced by electrostatic dis- charge. package outline pin assignments pin name type pin # rx ground ground 1 rx power power 2 rx_sd status out 3 rx_dat - signal out 4 rx_dat + signal out 5 tx power power 6 tx ground ground 7 tx_disable control in 8 tx_dat + signal in 9 tx_dat - signal in 10 n/c not connected a tx_fault (2x6 only) status out b ordering information product descriptor part number maximum signaling rate wavelength sff-pth-2125-sw-2x5 ibm42f21snnaa10 2.125gb/s 850nm sff-pth-2125-lw-2x5 IBM42F21LNNAA10 2.125gb/s 1310nm sff-pth-2125-sw-2x6 ibm42g21snnaa10 2.125gb/s 850nm sff-pth-2125-lw-2x6 ibm42g21lnnaa10 2.125gb/s 1310nm ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 3 of 23 transmit section the input, an ac coupled differential data stream from the host, enters the ac modulation section of the laser driver circuitry where it modulates the output optical intensity of a semiconductor laser. the dc drive main- tains the laser at the correct preset power level. in addition, safety circuits in the dc drive will shut off the laser if a fault is detected. the transceiver provides the ac coupling for the +tx/-tx lines. no ac coupling capacitors are required on the host card for proper operation. receive section the incoming modulated optical signal is converted to an electrical signal by the photoreceiver. this electrical signal is then amplified and converted to a differential serial output data stream and delivered to the host. a transition detector detects sufficient ac level of modulated light entering the photoreceiver. this signal is pro- vided to the host as a signal detect status line. the transceiver provides the ac coupling for the +rx/-rx lines. no ac coupling capacitors are required on the host card for proper operation. block diagram post-amp signal detect and +tx_dat +rx_dat fiber input photoreceiver output fiber fault -rx_dat rx_sd -tx_dat laser ac modulation tx_disable transmit section receive section optical electrical sense dc drive and safety control (only available on 2 x 6) tx_fault ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 4 of 23 08/15/00 input signal de?nitions levels for the signals described in this section are listed in transmit signal interface on page 8 and control electrical interface on page 9. tx_dat a differential pecl serial data stream is presented to the sff-pth-2125-sw/lw-2x5/2x6 for transmission onto an optical fiber by modulating the optical output intensity of the laser. tx_disable when high (a logical one), the tx_disable signal turns off the power to both the ac and dc laser driver cir- cuits. it will also reset a laser fault if one should happen. when low (a logical zero), the laser will be turned on within 1ms if a hard fault is not detected. the transceiver contains a pull-down resistor to enable the laser when the line is not connected on the host side. if driven, this line should be connected to a push-pull output driver. timing of tx_disable function t_off < 10 m s t_on < 1ms transmitter optical signal tx_disable t_reset > 10 m s ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 5 of 23 output signal de?nitions levels for the signals described in this section are listed in receive signal interface on page 8 and control electrical interface on page 9. rx_dat the incoming optical signal is converted and repowered as a differential pecl serial data stream. the receive signal interface table on page 8 gives the voltage levels and timing characteristics for the rx_dat signals. rx_sd the receive signal detect line is high (a logical one) when the incoming modulated light intensity is suf?cient for reliable operation. this is the state for normal operation. the line is low (a logical zero) when incoming modulated light intensity is the below that required to guarantee the correct operation of the link. normally, this only occurs when either the link is unplugged or the companion transceiver is turned off. this signal is normally used by the system for diagnostic purposes. this signal has a push-pull output driver. tx_fault (only available on 2 x 6) upon sensing an improper power level in the laser driver, the sff sets this signal high and turns off the laser. the tx_fault signal can be reset with the tx_disable line. the laser is turned off within 100 m s as shown in the transmitter fault detection timing diagram below. this signal has an open drain ttl driver. a pull up resistor is required on the host side of the sff connector. the recommended value for this resistor is 10k w . receive signal detection rx_sd t_sd_off <100 m s t_sd_on <100 m s signal removed optical signal transmitter fault detection safety fault tx_fault optical power t_fault <100 m s transmitter tx_fault option is only available on 2 x 6 ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 6 of 23 08/15/00 operation resetting a laser fault resetting a laser fault by toggling the tx_disable input will permit the sff-pth-2125-sw/lw-2x5/2x6 to attempt to power on the laser following a fault condition. continuous resetting and re-powering of the laser under a hard fault condition could cause a series of optical pulses with sufficient energy to violate laser safety standards. to alleviate the possibility of violating laser safety standards, the sff-pth-2125-sw/lw-2x5/2x6 will turn off the laser if a second fault is detected within 25ms of the laser powering on. this lock is cleared during each power on cycle. please refer to the timing diagrams below. initialization timings sff-pth-2125-sw/lw-2x5/2x6 with tx_disable de-asserted t_init < 300ms vcc > 3.15v tx_disable optical transmit signal 1 0 tx_fault tx_fault option is only available on 2 x 6 with tx_disable asserted t_init < 300ms vcc > 3.15v tx_disable optical transmit signal tx_fault tx_fault option is only available on 2 x 6 sff-pth-2125-sw/lw-2x5/2x6 occurrence optical power t_reset >10 m s tx_disable t_init* <300ms *only if the fault is transient t_reset >10 m s t_init* <300ms *only if the fault is transient t_fault of transmitter safety fault occurrence optical power tx_disable of transmitter safety fault <100 m s unsuccessful recovery from a transmitter safety fault successful recovery from a transmitter safety fault tx_fault option is only available on 2 x 6 tx_fault option is only available on 2 x 6 tx_fault tx_fault ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 7 of 23 absolute maximum ratings symbol parameter min. typical max. unit notes t s storage temperature -40 85 c 1 rh s relative humidityCstorage 0 95 % 1, 2 v cc supply voltage -0.5 4.0 v 1 v i ttl dc input voltage 0 v cc + 0.7 v1 t sold connector pin temp during soldering 165/5 c/s 1,3 t sold optics temperature during soldering 100/60 c/s 4 1. stresses listed may be applied one at a time without causing permanent damage. exposure to these values for extended periods may affect reliability. specification compliance is only defined within specified operating conditions. 2. non-condensing environment. 3. the connector pin temperature can be measured with a thermocouple attached to pin 3 of 2x5 header 4. the optics temperature can be measured with a thermocouple on the device with the cover off. speci?ed operating conditions symbol parameter min. typical max. unit t op ambient operating temperature 0 70 c v dd t, v dd r supply voltage 3.135 3.3 3.465 v rh op relative humidity-operating 8 80 % power supply interface symbol parameter min typical max. unit i tx tx power current (@ 3.3v) 60 ma i rx rx power current (@ 3.3v) 90 ma i tx tx power current (@3.465v) 85 ma i rx rx power current (@3.465v) 115 ma ripple & noise 100 mv (pk-pk) ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 8 of 23 08/15/00 transmit signal interface (from host to sff-pth-2125-sw/lw-2x5/2x6) symbol parameter min max. unit notes v o pecl amplitude 400 2000 mv 1 dj elec-xmit pecl deterministic jitter 0.14 ui 2,4 tj elec-xmt pecl total jitter 0.26 ui 2,4 pecl rise/fall 50 200 ps 3,4 pecl differential skew 20 ps 4 1. at 100 w , differential peak-to-peak, the figure below shows the simplified circuit schematic for the sff-pth-2125-sw/lw-2x5/2x6 high-speed differential input lines. the pecl input data lines have ac coupling capacitors. the capacitors are not required on the host card. 2. deterministic jitter (dj) and total jitter (tj) values are measured according to the methods de?ned in [2]. jitter values at the output of a transmitter or receiver section assume worst case jitter values at its respective input. [1ui(unit interval)=470.6ps at 2.125gb/s] 3. rise and fall times are measured from 20 - 80%, 100 w differential. 4. when in 1gb/s mode the transceiver is compliant with 1g speci?cations as de?ned in [1]. receive signal interface (from sff-pth-2125-sw/lw-2x5/2x6 to host) symbol parameter min max. unit note(s) v o pecl amplitude 600 1000 mv 1 dj elec-rcv pecl deterministic jitter 0.39 ui 2,3 tj elec-rcv pecl total jitter 0.64 ui 2,3 pecl differential skew 102 ps 3 1. at 100 w , differential peak-to-peak, the figure below shows the simplified circuit schematic for the sff-pth-2125-sw/lw-2x5/2x6 high-speed differential output lines. the pecl input data lines have ac coupling capacitors. the capacitors are not required on the host card. 2. deterministic jitter (dj) and total jitter (tj) values are measured according to the methods de?ned in [2]. jitter values at the output of a transmitter or receiver section assume worst case jitter values at its respective input. [1ui(unit interval)=470.6ps at 2.125gb/s] 3. when in 1gb/s mode the transceiver is compliant with 1g speci?cations as de?ned in [1]. 1ui(unit interval)=941.2ps at 1.0625gb/s) v dd 50 w 50 w 2.4k w 3.8k w 8pf +tx_dat -tx_dat rx_v dd 50 w rx_gnd 50 w ... +rx_dat -rx_dat ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 9 of 23 control electrical interface symbol parameter min max. unit note(s) voltage levels v ol ttl output (from sff-pth-2125-sw/lw-2x5/2x6) 0.0 0.50 v v oh v cc -0.5 v cc +0.3 v v il ttl input (to sff-pth-2125-sw/lw-2x5/2x6) 0 0.8 v 1 v ih 2.0 v dd t+0.3 v timing characteristics t_off tx_disable assert time 10 m s 2 t_on tx_disable de-assert time 1 ms 2 t_reset tx_disable time to start reset 10 m s 2 t_init initialization time 300 ms 3 t_fault tx_fault assert time (only available on the 2 x 6) 100 m s 3 t_sd_on rx_sd assert delay 100 m s 4 t_sd_off rx_sd de-assert delay 100 m s 4 1. a 1k w pull-down resistor to gnd is present on the sff-pth-2125-sw/lw-2x5/2x6 to allow the laser to be active when no input signal is provided on tx_disable. 2. see tx_disable on page 4 for timing relationships. 3. see operation on page 6 4. see rx_sd on page 5 for timing relations. ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 10 of 23 08/15/00 optical speci?cations (short wavelength) receiver speci?cations symbol parameter min typical max. unit notes l operating wavelength 830 860 nm rl return loss of receiver 12 db oma optical modulation amplitude - 2.125gb/s 49 2000 m w (pk-pk) 1, 2 oma optical modulation amplitude - 1.0625gb/s 31 2000 m w (pk-pk) 1, 2 p off rx_sd de-assert (negate) level -27.0 -17.5 dbm (avg) 3 p on rx_sd assert level -17.0 dbm (avg) 3 rx_sd hysteresis 0.5 2.5 5.0 db (optical) 3 1. the minimum and maximum values of the average received power in dbm give the input power range to maintain a ber<10 -12 when the data is sampled in the center of the receiver eye. these values take into account power penalties caused by the use of a laser transmitter with a worst-case combination of spectral width, extinction ratio and pulse shape characteristic s. 2. optical modulation amplitude (oma) is de?ned as the difference in optical power between a logic level one and a logic level z ero. the optical modulation amplitude is de?ned in terms of average optical power (p avg in m w) and extinction ratio (er) as given by oma=2p avg ((er-1)/(er+1)). the extinction ratio, de?ned as the ratio of the average optical power (in m w) in a logic level one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case re?ections, must be the absolute (unitless linear) ratio and not expressed in db.the speci?ed optical modulation amplitude at 2.125gb/s is equivalent to an average power of -15 dbm at an extinction ratio of 9 db. at 1.0625gb/s, the speci?ed oma is equivalent to an average power of -17 dbm at an er of 9 db. 3. the rx_sd has hysteresis to minimize chatter on the output line. in principle, hysteresis alone does not guarantee chatter- free operation. the sff-pth-2125-sw/lw-2x5/2x6, however, presents an rx_sd line without chatter, where chatter is de?ned as a transient response having a voltage level of greater than 0.5 volts (in the case of going from the negate level to the assert level) and of any duration that can be sensed by the host logic. ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 11 of 23 transmitter speci?cations symbol parameter min typical max. unit notes l c spectral center wavelength 830 860 nm dl spectral width 0.85 nm (rms) pt launched optical power -10 -4.0 dbm (avg) 1 t rise /t fall optical rise/fall time 150 ps 2 oma optical modulation amplitude (2.125gb/s) 196 m w (pk-pk) 3 oma optical modulation amplitude (1.0625gb/s) 156 m w (pk-pk) 3 rin 12 relative intensity noise -117 db/hz 4 eye opening 0.56 ui 5 dj deterministic jitter 0.26 ui 6 cpr coupled power ratio 9 db 7 1. launched optical power is measured at the end of a two meter section of a 50/125m fiber (n.a.=0.20). the maximum and mini- mum of the allowed range of average transmitter power coupled into the fiber are worst case values to account for manufacturing variances, drift due to temperature variations, and aging effects. the minimum launched optical power specified assumes an infi - nite extinction ratio at the minimum specified oma. 2. optical transition time is the time interval required for the rising or falling edge of an optical pulse to transition between the 20% and 80% amplitudes relative to the logical 1 and 0 levels. this is measured through a 4th order bessel -thompson ?lter with 0.75 * data rate 3-db bandwidth and corrected to the full bandwidth value. 3. optical modulation amplitude (oma) is de?ned as the difference in optical power between a logic level one and a logic level z ero. the optical modulation amplitude is de?ned in terms of average optical power (p avg in m w) and extinction ratio (er) as given by oma=2p avg ((er-1)/(er+1)). in this expression, the extinction ratio, the ratio of the average optical power (in m w) in a logic level one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case re?ections, must be the absolute (unitless linear) ratio and not expressed in db. the speci?ed optical modulation amplitude is equivalent to an average power of -9 dbm at an extinction ratio of 9 db. 4. rin 12 is the laser noise, integrated over a speci?ed bandwidth, measured relative to average optical power with 12db return loss. see ansi fibre channel speci?cation annex a. 5. eye opening is the portion of the bit time where the bit error rate (ber) 10 -12 . 1.0625gb/s values meet the criteria listed in ref [1]. 6. deterministic jitter is measured as the peak-to-peak timing variation of the 50% optical signal crossings when transmitting r epeti- tive k28.5 characters. it is de?ned in fc-ph, version 4.3, clause 3.1.87 as: timing distortions caused by normal circuit effects in the transmission system. deterministic jitter is often subdivided into duty cycle distortion (dcd) caused by propagation differences between the two transitions of a signal and data depen- dent jitter (ddj) caused by the interaction of the limited bandwidth of the transmission system components and the sym- bol sequence. 1.0625gb/s values meet the criteria listed in ref [1]. 7. coupled power ratio is the ratio of the average power coupled into a multimode ?ber to the average power coupled into a singl e mode ?ber. this measurement is de?ned in eia/tia-526-14a. ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 12 of 23 08/15/00 optical speci?cations (long wavelength) receiver speci?cations symbol parameters min typical max units notes l operating wavelength 1270 1355 nm rl return loss of receiver 12 db oma optical modulation amplitude (2.125gb/s and 1.0625gb/s) 15 1000 m w 1,2 p off rx_sd de-assert (negate) level -30.0 -20.0 dbm (avg) 3 p on rx_sd assert level -20.5 dbm (avg) 3 rx_sd hysteresis 0.5 2.5 5.0 db (optical) 3 1. the minimum and maximum values of the average received power in dbm allow the input power range to maintain a ber < 10 -12 when the data is sampled in the center of the receiver eye. these values take into account power penalties caused by the use of a laser transmitter with a worst-case combination of spectral width, extinction ratio, and pulse shape characteristics. 2. optical modulation amplitude (oma) is de?ned as the difference in optical power between a logic level one and a logic level z ero. the optical modulation amplitude is de?ned in terms of average optical power (p avg in m w) and extinction ratio (er) as given by oma=2p avg ((er-1)/(er+1)). the extinction ratio, de?ned as the ratio of the average optical power (in m w) in a logic level one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case re?ections, must be the absolute (unitless linear) ratio and not expressed in db.the speci?ed optical modulation amplitude at 2.125gb/s is equivalent to an average power of -15 dbm at an extinction ratio of 9 db. at 1.0625gb/s, the speci?ed oma is equivalent to an average power of -17 dbm at an er of 9 db. 3. the rx_sd has hysteresis to minimize chatter on the output line. in principle, hysteresis alone does not guarantee chatter- free operation. these sffs, however, present an rx_sd line without chatter, where chatter is de?ned as a transient response having a voltage level of greater than 0.5 volts (in the case of going from the negate level to the assert level) and of any duration that can be sensed by the host logic. ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 13 of 23 transmitter speci?cations symbol parameter min typical max units notes l c spectral center wavelength 1290 1335 nm dl spectral width 2.5 nm (rms) pt launched optical power -9.5 -3.0 dbm (avg) 1 t rise /t fall optical rise/fall time 150 ps 2 oma optical modulation amplitude 189 m w 3 rin 12 relative intensity noise -117 db/hz 4 eye opening 0.56 ui 5 dj deterministic jitter 0.26 ui 6 1. launched optical power is measured at the end of a two meter section of a 9/125 m m fiber for the sff-pth-2125-lw. the maxi- mum and minimum of the allowed range of average transmitter power coupled into the fiber are worst case values to account for manufacturing variances, drift due to temperature variations, and aging effects. the minimum launched optical power specified assumes an infinite extinction ratio at the minimum specified oma. 2. optical transition time is the time interval required for the rising or falling edge of an optical pulse to transition between the 20% and 80% amplitudes relative to the logical 1 and 0 levels. this is measured through a 4th order bessel -thompson ?lter with 0.75 * data rate 3-db bandwidth and corrected to the full bandwidth value. 3. optical modulation amplitude (oma) is de?ned as the difference in optical power between a logic level one and a logic level z ero. the optical modulation amplitude is de?ned in terms of average optical power (p avg in m w) and extinction ratio (er) as given by oma=2p avg ((er-1)/(er+1)). in this expression, the extinction ratio, the ratio of the average optical power (in m w) in a logic level one to the average optical power in a logic level zero measured under fully modulated conditions in the presence of worst case re?ections, must be the absolute (unitless linear) ratio and not expressed in db. the speci?ed optical modulation amplitude is equivalent to an average power of -9 dbm at an extinction ratio of 9 db. 4. rin 12 is the laser noise, integrated over a specified bandwidth, measured relative to average optical power with 12 db return loss. see ansi fibre channel specification annex a.5. 5. eye opening is the portion of the bit time where the bit error rate (ber) is < 10 -12 . 1.0625gb/s values meet the criteria listed in ref [1]. 6. deterministic jitter is measured as the peak-to-peak timing variation of the 50% optical signal crossings when transmitting r epeti- tive k28.5 characters. it is de?ned in fc-pc, version 4.3, clause 3.1.87 as: timing distortions caused by normal circuit effects in the transmission system. deterministic jitter is often subdivided into duty cycle distortion (dcd) caused by propagation differences between the two transitions of a signal and data dependent jitter (ddj) caused by the interaction of the limited bandwidth of t he transmission system components and the symbol sequence . 1.0625gb/s values meet the criteria listed in ref [1]. ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 14 of 23 08/15/00 optical cable and connector speci?cations (short wavelength) symbol parameter min typical max. unit notes 50/125 m m cable specifications (multimode 850nm, 400mhz-km) l length - 2.125gb/s 2 260 m l length - 1.0625gb/s 2 450 m bw bandwidth @ l = 850nm 400 mhz-km m c attenuation @ l = 850nm 3.5 db/km n.a. numerical aperture 0.20 50/125 m m cable specifications (multimode 850nm, 500mhz-km) l length - 2.125gb/s 2 300 m l length - 1.0625gb/s 2 500 m bw bandwidth @ l = 850nm 500 mhz-km m c attenuation @ l = 850nm 3.5 db/km n.a. numerical aperture 0.20 62.5/125 m m cable specifications (multimode 850nm, 160mhz-km) length - 2.125gb/s 2 120 m length - 1.0625gb/s 2 250 m bw bandwidth @ l = 850nm 160 mhz-km attenuation @ l = 850nm 3.75 db/km n.a. numerical aperture 0.275 62.5/125 m m cable specifications (multimode 850nm, 200mhz-km) length - 2.125gb/s 2 150 m length - 1.0625gb/s 2 300 m bw bandwidth @ l = 850nm 200 mhz-km attenuation @ l = 850nm 3.75 db/km n.a. numerical aperture 0.275 lc optical connector specifications (multimode) m con nominal attenuation 0.25 0.4 db 1 s con attenuation standard deviation 0.15 db 1 connects/disconnects 250 cycles 1 1. the optical interface connector dimensionally conforms to the industry standard lc type connector documented in [1]. a dual keyed lc receptacle mechanically aligns the optical transmission fiber to the sff-pth-2125-sw/lw-2x5/2x6. ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 15 of 23 optical cable and connector speci?cations (long wavelength) symbol parameter min typical max. unit notes 9/125 m m cable speci?cations (singlemode 1310nm) l length - 2.125gb/s 10000 m l length - 1.0625gb/s 10000 m m c attenuation @ l = 1310nm 0.5 db/km lc optical connector (singlemode) m con nominal attenuation 0.2 0.4 db 1 s con attenuation standard deviation 0.1 db 1 connects/disconnects 250 cycles 1 1. the optical interface connector dimensionally conforms to the industry standard lc type connector documented in [1]. a dual keyed lc receptacle mechanically aligns the optical transmission fiber to the sff-pth-2125-sw/lw-2x5/2x6. ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 16 of 23 08/15/00 soldering information the sff transceiver comes with a process/dust plug. when the process/dust plug is in place the transceiver can withstand normal wave soldering and aqueous spray cleaning processes. while, the transceiver is able to withstand an aqueous cleaning process, since it is not hermetically sealed, it was not designed to be immersed in cleaning solvents. if the process/dust plug was not contaminated during the wave soldering and aqueous spray cleaning process it can be reused as a dust plug. reliability projections symbol parameter max. unit note afr average failure rate 0.0100 %/khr 1 1. afr specified over 44 khours at 50 c, with minimum airflow of 100 fpm. esd compliance symbol parameter compliance notes esd ep hbm esd rating to electrical pins class i 1 esd lc air discharge into front bezel class iv 2 1. the hbm (human body model) is a 100pf capacitor discharged through a 1.5k w resistor into each pin per jesd22-a114-b. 2. complies with european esd immunity test (c-b-2-0001-034). ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 17 of 23 mechanical description (2 x 5 pin con?guration) the sff-pth-2125-sw/lw-2x5/2x6 is intended to be used on a host card having a thickness of 0.062" to 0.100. the host card footprint with essential keepouts and drill holes is shown in host card footprint (2 x 5 pin configuration) on page 18. package diagram ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 18 of 23 08/15/00 host card footprint (2 x 5 pin con?guration) ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 19 of 23 mechanical description (2 x 6 pin con?guration) the sff-pth-2125-sw/lw-2x5/2x6 is intended to be used on a host card having a thickness of 0.062" to 0.100. the host card footprint with essential keepouts and drill holes is shown in host card footprint (2 x 6 pin configuration) on page 20. package diagram ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 20 of 23 08/15/00 host card footprint (2 x 6 pin con?guration) ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 21 of 23 suggested transceiver/host interface 0.01uf 0.01uf 1k 0.01uf transmitter driver 100 ohm 127 127 ohm ohm 82 82 ohm ohm 4.7uh vcct +3.3v ohm 200 10uf 100 ohm differential pair vcc +3.3v +3.3v txfault 10k ohm 4.7uh +3.3v vccr rx+ rx- vee veer asic 200 ohm 3 7 veet rx_sd rx- rx+ 4 5 2 1 b 10 9 8 txdisable td+ td- 100 ohm differential pair ohm 6 tx+ tx- 0.01uf 0.01uf receiver amplifier ohm 100 0.01uf ibm42f21snnaa10 ibm42g21snnaa10 IBM42F21LNNAA10 ibm42g21lnnaa10 2x / 1x fibre channel small form factor pth transceiver page 22 of 23 08/15/00 references standards 1. american national standards institute inc. (ansi), t11/project 1235-dt/rev 10, fibre channel-physical interface (fc-pi). drafts of this standard are available to members of the standards working committee. for further information see the t11.2 website at www.t11.org. to be added to the email re?ector, send an e-mail to: majordomo@dpt.com containing the line: subscribe t11.2 ibm42g21snnaa10 ibm42f21snnaa10 ibm42g21lnnaa10 IBM42F21LNNAA10 2x / 1x fibre channel small form factor pth transceiver 08/15/00 page 23 of 23 revision log date description of modi?cation 08/15/00 initial release. copyright and disclaimer copyright international business machines corporation 2000. all rights reserved printed in the united states of america, august 2000 the following are trademarks of international business machines corporation in the united states, or other countries, or both. ibm ibm logo other company, product and service names may be trademarks or service marks of others. all information contained in this document is subject to change without notice. the products described in this docu- ment are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. the information contained in this document does not affect or change ibm product specifications or warranties. nothing in this document shall operate as an express or implied license or indemnity under the intellec- tual property rights of ibm or third parties. all information contained in this document was obtained in specific environ- ments, and is presented as an illustration. the results obtained in other operating environments may vary. the information contained in this document is provided on an as is basis. in no event will ibm be liable for damages arising directly or indirectly from any use of the information contained in this document. ibm microelectronics division 1580 route 52, bldg. 504 hopewell junction, ny 12533-6351 the ibm home page can be found at http://www.ibm.com the ibm microelectronics division home page can be found at http://www.chips.ibm.com 1/2gbps sff pth.01 08/15/00 a |
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