1 features ? usb 2.0 full speed host/function processor ? real-time host/function switching capability ? internal usb and system interface controllers ? 32-bit generic system processor interface with dma ? separate tx and rx buffers for host and function operations ? in-system software upgrade autonomous usb host operation without system processor intervention ? device enumeration ? usb protocol management ? bus bandwidth reclamation ? status handling ? control, bulk, interrupt and isochronous transfers full-speed function controller ? 1 bi-directional control endpoint ? 6 programmable (packet size and endpoint type) endpoints supporting interrupt, bulk and isochronous transfers ? automatic retry for non-isochronous end-points integrated usb firmware ? easy-to-use, ansi c compliant api for usb device driver development ? embedded, os agnostic usb host stack ? embedded system interface driver ? embedded usb hub driver 6 mhz operation 3.3/1.8v operation 100-pin lqfp packages overview atmel?s at43usb370 is a usb 2.0 compliant, dual role, full speed host/function pro- cessor designed specifically to enable point-to-point usb connectivity for embedded devices. it features integrated usb host stack, system interface drivers, on-chip usb hardware, 32-bit generic system processor in terface with dma support, and on-the-fly host/function switching capability. the on-chip usb hardware features usb transceiver, serial interface engine (sie), sie controller and sof generation block. it supports the physical and data link layer of the usb protocol whereas the usb transaction layer is implemented in firmware. in host mode, the integrated usb firmware consists of the usb host stack running on the usb controller and the system interface driver resident on the system interface controller. the usb host stack provides complete usb protocol management includ- ing device enumeration, transaction management, scheduling and frame management, and bus reclamation. the system interface driver serves as an interface between the usb host stack and the applications resident on the external system pro- cessor. it handles all of the high-level data flow management during a usb transaction. together, the usb host stack and the system interface driver deliver com- plete usb host operations autonomously, without the intervention of the system processor. usb 2.0 full-speed host/function processor at43usb370 summary rev. 3340bs?usb?4/14/03
2 at43usb370 3340bs?usb?4/14/03 the at43usb370 communicates with the external system processor through its generic 32-bit system processor interface. this system interface features 2 kbytes of fifo and a dma engine designed to ensure maximum bus utilization. the automatic usb retry mechanism built into the at43usb370 further minimizes data traffic across the system interface. as a function, the at43usb370 operates in full speed mode. it supports one control endpoint and a maximum of six programmable (max packet size and endpoint type) endpoints. the internal usb controller runs the function firmware that manages usb enumeration and data flow control without system processor intervention. developing application specific usb device drivers requires the use of a small set of high level, ansi c compliant apis (system interface apis) that provides communication between the system processor and the at43usb370. the encapsulation of usb operations into this small set of apis leads to unprecedented ease in device driver development and rtos support. the at43usb370, with its highly integrated usb hardware/firmware architecture, not only hides the complexity of the traditional usb design, but also frees system resources from being burdened by timing critical usb activities. it is an ideal solution for point-to-point usb connec- tivity in the resource constrained embedded environment. pin configuration figure 1. at43usb370 100-lead tqfp a7 a6 a5 a4 a3 a2 a1 a0 cs_n oe_n select intr_in intr_out vdd vss vss vdd18 prog more ready done busy wait_n we_n dreq_n vss d20 d21 d22 d23 vdd d24 d25 d26 d27 vss d28 d29 d30 d31 vdd18 vss nc nc scan_en rcv_data dclk trst_n vss vdd dack_n vss bt mt vdd tp0 tp1 clk_sel vss xtal1 xtal2 vdd lft vss dp dm tp2 tp3 rpd_en rpu_en reset_n tck tms tdi tdo d0 d1 d2 d3 d4 d5 d6 d7 vss d8 d9 d10 d11 vcc d12 d13 d14 d15 nc vdd18 vss d16 d17 d18 d19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
3 at43usb370 3340bs?usb?4/14/03 pin assignment table 1 . pin assignment for the at43usb370 pin # signal type pin # signal type pin # signal type 1 a7 input 35 xtal1 input 68 d25 bi-directional 2 a6 input 36 xtal2 output 69 d24 bi-directional 3 a5 input 36 xtal2 output 70 vdd power supply/gnd 4 a4 input 37 vdd power supply/gnd 71 d23 bi-directional 5 a3 input 38 lft input 72 d22 bi-directional 6 a2 input 39 vss power supply/gnd 73 d21 bi-directional 7 a1 input 40 dp bi-directional 74 d20 bi-directional 8 a0 input 41 dm bi-directional 75 vss power supply/gnd 9 cs_n input 42 tp2 input 76 d19 bi-directional 10 oe_n input 43 tp3 input 77 d18 bi-directional 11 select input 44 rpd_en output 78 d17 bi-directional 12 intr_in input 45 rpu_en output 79 d16 bi-directional 13 intr_out output 46 reset_n input 80 vss power supply/gnd 14 vdd power supply/gnd 47 tck input 81 vdd18 power supply/gnd 15 vss power supply/gnd 48 tms input 82 nc not connected 16 vss power supply/gnd 49 tdi input 83 d15 bi-directional 17 vdd18 power supply/gnd 50 tdo output 84 d14 bi-directional 18 prog input 51 vdd power supply/gnd 85 d13 bi-directional 19 more input 52 vss power supply/gnd 86 d12 bi-directional 20 ready output 53 trst_n input 87 vcc power supply/gnd 21 done input 54 dclk output 88 d11 bi-directional 22 busy output 55 rcv_data output 89 d10 bi-directional 23 wait_n output 56 scan_en input 90 d9 bi-directional 24 we_n input 57 nc not connected 91 d8 bi-directional 25 dreq_n output 58 nc not connected 92 vss power supply/gnd 26 dack_n input 59 vss power supply/gnd 93 d7 bi-directional 27 vss power supply/gnd 60 vdd18 power supply/gnd 94 d6 bi-directional 28 bt input 61 d31 bi-directional 95 d5 bi-directional 29 mt input 62 d30 bi-directional 96 d4 bi-directional 30 vdd power supply/gnd 63 d29 bi-directional 97 d3 bi-directional 31 tp0 input 64 d28 bi-directional 98 d2 bi-directional 32 tp1 output 65 vss power supply/gnd 99 d1 bi-directional 33 clk_sel input 66 d27 bi-directional 100 d0 bi-directional 34 vss power supply/gnd 67 d26 bi-directional
4 at43usb370 3340bs?usb?4/14/03 pin description table 2 . pin description for the at43usb370 pin name type description a[7:0] input address bus - system address bus (least significant byte only) cs_n input chip_select - from system processor. active low oe_n input output_enable - from system processor. active low select input processor_select - from system processor - used to select between usbc and sic when prog is active. active high intr_in input interrupt to at43usb370 - from system processor. active high intr_out output interrupt from at43usb370 - to system processor. active high vcc power supply/gnd 3.3v power net vdd power supply/gnd 3.3v power supply vss power supply/gnd ground vdd18 power supply/gnd 1.8v power supply - bus interface io pads prog input program_load_enable - from system processor - set program mode to usbc and sic. active high. more input pio mode handshake signal from system processor. active high ready output pio mode handshake signal to system processor. active high done input pio mode handshake signal from system processor. active high busy output busy - to system processor - indicates the at43usb370 cannot accept external interrupts. active high wait_n output wait - to system processor. active low we_n input write_enable - from system processor. active low dreq_n output dma request - to system processor. active low dack_n input dma acknowledge - from system processor. active low bt input bist- test signal mt input memory - test signal tp0 input test pin 0 tp1 output test pin 1 tp2 input test pin 2 tp3 input test pin 3 clk_sel input external/pll clock selection - low selects crystal-pll clock source while a high uses xtal1, bypassing pll. xtal1 input oscillator input - input to the inverting oscillator amplifier. xtal2 output oscillator output - output of the inverting oscillator amplifier. lft input pll loop filter dp bi-directional d+ (usb line) dm bi-directional d- (usb line) rpd_en output pull down enable
5 at43usb370 3340bs?usb?4/14/03 block diagram figure 2. at43usb370 hardware rpu_en output pull up enable reset_n input reset - for at43usb370. active low tck input jtag clock tms input jtag mode select tdi input jtag serial data in tdo output jtag serial data out trst_n input jtag reset - active low dclk output test pin rcv_data output test pin scan_en input test pin-scan control nc ? not connected d[31:0] bi-directional system data bus table 2 . pin description for the at43usb370 (continued) pin name type description address usb controller (usbc) usb transceiver d+ d- fifos sie sie controller system processor interface data control & status registers system interface controller (sic) dma control
6 at43usb370 3340bs?usb?4/14/03 figure 3. at43usb370 architecture development support the at43usb370 is supported by the at43dk370, a complete development kit. the at43dk370 includes a reference design board with an arm7 system processor, the usb 2.0 compliant host stack and system interface firmware, sample application code and the com- plete documentation (pcb layout, schematics, bom, etc.). the ?usb clinic?, an atmel usb software debugging utility is in cluded in the development kit. embedded, os agnostic usb firmware usb class device drivers system processor system interface driver usb hub keyboard printer hard disk api manager data trasport service descriptor management usb host stack transaction management frame scheduling hub driver status handling mass storage hid printer other usb devices operating system at43usb370 system interface apis applications device enumeration
7 at43usb370 3340bs?usb?4/14/03 packaging information 100 pin ? lqfp 2325 orchard parkway san jose, ca 95131 title drawing no. r rev. 100aa, 100-lead, 14 x 14 mm body size, 1.4 mm body thickness, 0.5 mm lead pitch, low profile quad flat pack (lqfp) c 100aa 04/29/2002 pin 1 identifier 0?~7? pin 1 l c a1 a2 a d1 d e e1 e b a ? ? 1.60 a1 0.05 ? 0.15 a2 1.35 1.40 1.45 d 15.75 16.00 16.25 d1 13.90 14.00 14.10 note 2 e 15.75 16.00 16.25 e1 13.90 14.00 14.10 note 2 b 0.17 ? 0.27 c 0.09 ? 0.20 l 0.45 ? 0.75 e 0.50 typ notes: 1. this package conforms to jedec reference ms-026, variation aed. 2. dimensions d1 and e1 do not include mold protrusion. allowable protrusion is 0.25 mm per side. dimensions d1 and e1 are maximum plastic body size dimensions including mold mismatch. 3. lead coplanarity is 0.08 mm maximum. common dimensions (unit of measure = mm) symbol min nom max note
printed on recycled paper. 3340bs?usb?4/14/03 xm disclaimer: atmel corporation makes no warranty for the use of its products, other than those expressly contained in the company?s standar d warranty which is detailed in atmel?s terms and conditions located on the company?s web site. the company assumes no responsibi lity for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time wi thout notice, and does not make any commitment to update the information contained herein. no licenses to patents or other intellectual property of atmel are granted by the company in connection with the sale of atmel products, expressly or by implication. atmel?s products are not aut horized for use as critical components in life support devices or systems. atmel corporation atmel operations 2325 orchard parkway san jose, ca 95131 tel: 1(408) 441-0311 fax: 1(408) 487-2600 regional headquarters europe atmel sarl route des arsenaux 41 case postale 80 ch-1705 fribourg switzerland tel: (41) 26-426-5555 fax: (41) 26-426-5500 asia room 1219 chinachem golden plaza 77 mody road tsimshatsui east kowloon hong kong tel: (852) 2721-9778 fax: (852) 2722-1369 japan 9f, tonetsu shinkawa bldg. 1-24-8 shinkawa chuo-ku, tokyo 104-0033 japan tel: (81) 3-3523-3551 fax: (81) 3-3523-7581 memory 2325 orchard parkway san jose, ca 95131 tel: 1(408) 441-0311 fax: 1(408) 436-4314 microcontrollers 2325 orchard parkway san jose, ca 95131 tel: 1(408) 441-0311 fax: 1(408) 436-4314 la chantrerie bp 70602 44306 nantes cedex 3, france tel: (33) 2-40-18-18-18 fax: (33) 2-40-18-19-60 asic/assp/smart cards zone industrielle 13106 rousset cedex, france tel: (33) 4-42-53-60-00 fax: (33) 4-42-53-60-01 1150 east cheyenne mtn. blvd. colorado springs, co 80906 tel: 1(719) 576-3300 fax: 1(719) 540-1759 scottish enterprise technology park maxwell building east kilbride g75 0qr, scotland tel: (44) 1355-803-000 fax: (44) 1355-242-743 rf/automotive theresienstrasse 2 postfach 3535 74025 heilbronn, germany tel: (49) 71-31-67-0 fax: (49) 71-31-67-2340 1150 east cheyenne mtn. blvd. colorado springs, co 80906 tel: 1(719) 576-3300 fax: 1(719) 540-1759 biometrics/imaging/hi-rel mpu/ high speed converters/rf datacom avenue de rochepleine bp 123 38521 saint-egreve cedex, france tel: (33) 4-76-58-30-00 fax: (33) 4-76-58-34-80 e-mail literature@atmel.com web site http://www.atmel.com ? atmel corporation 2003 . all rights reserved. atmel ? and combinations thereof, are the registered trademarks of atmel corporation or its subsidiaries. other terms and product names may be the trademarks of others.
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