DM9000A中文使用手册

DM9000A uP ?? 10/100M ??????????? ?? : 0.1 1 ?????? 04/08/30 ????DM9000A ??? DM9000A ? DAVICOM ?????????????????? 1. ???? LQFP 48 ???????????????? 2. ????? 3.3V (???? 2.5V ????)???????? 92mA?????? 3. ? MCU ????? uP 8bit / 16 bit??????? 3.3V ? 5V ? I/O ????? ?????????? MCU ??? 4. ?? AUTO MDI -X ?? 10/100M PHY??????????????? 10/100M ?? ??? (N-WAY) ? ?? 10/100M????????????? 100M ?????? ? 5V ? 3.3V ??? ? 5. ?? EEPROM (93C46 )???????????? 6. ?? GPIO * 6 ? 8bit ?????????????? 7. ????????????? CPU ?? CPU ???? CPU ??? 8. ?? TCP/IP ??????? CPU ?? CPU ???? CPU ??? DM9000A uP ?? 10/100M ??????????? 2 ?? : 0.1 ?????? 04/08/30 1 2 3 4 5 6 7 8 9 10 11 12 37 38 39 40 41 42 43 44 45 46 47 48 B G R E S V D D 25 R X + TX - R X - G N D G N D T X + V D D 25 S D 7 S D 6 S D 5 CS# LED2 LED1 TEST PWRST# VDD X2 X1 GND SD GND BGGND 13 14 15 16 17 18 19 20 21 22 23 24 EEDIO SD4 SD3 GND SD2 SD1 SD0 EECS WAKE VDD EECK LED3 3536 34 33 32 31 30 29 28 27 26 25 G P 6 G P 2 G P 4 G P 5 G P 3 V D D G P 1 C M D IN T G N D IO R # IO W # DM9000A (8-bit mode) ????DM9000A ????? 2.1 8 bit ???? ?? DM9000A uP ?? 10/100M ??????????? ?? : 0.1 3 ?????? 04/08/30 1 2 3 4 5 6 7 8 9 10 11 12 37 38 39 40 41 42 43 44 45 46 47 48 B G R E S V D D 25 R X + TX - R X - G N D G N D T X + V D D 25 S D 7 S D 6 S D 5 CS# LED2 LED1 TEST PWRST# VDD X2 X1 GND SD GND BGGND 13 14 15 16 17 18 19 20 21 22 23 24 EEDIO SD4 SD3 GND SD2 SD1 SD0 EECS SD15 VDD EECK SD14 3536 34 33 32 31 30 29 28 27 26 25 S D 13 S D 9 S D 11 S D 12 S D 10 V D D S D 8 C M D IN T G N D IO R # IO W # DM9000A (16-bit mode) 2.2 16 bit ?? DM9000A uP ?? 10/100M ??????????? 4 ?? : 0.1 ?????? 04/08/30 ?????????? ????? I = ???? O = ???? I/O = ?????? P = ???? # = ????? LI = ?????? E = ?? EEPROM ????? DL = ??????? DH = ??????? 3.1 ?????? ??? ???? ?? ???? 35 IOR# I,DL,E ?????? 36 IOW# I,DL,E ?????? 37 CS# I,DL,E DM9000A ???? 32 CMD I ???????????????? ?????????????????????? ?????????????????????? 34 INT O,DH,E ?????? DM9000A ??????????????? 16~18, 10~14 SD0~7 I/O ???? bit 0 ~ 7 31,29~24 ,22 SD8~15 I/O ???? bit 8 ~ 15 ?? : ??????? SD8 , SD9 ???? IC ????? 60k ohm SD8 ~15 ? GPIO ?????? 8 bit ????? GPIO ?? ??? LI ???????? 3.9 ?? 3.2 8 bit ??? GPIO ?? ??? ???? ?? ???? 22 WAKEUP O,DH, E WOL ?????? ??? WOL ???????????? 24 LED3 0,#,E ? LED ?? 1 ?????? / ?????? ?? phy ??????????????? ?? phy ??????????????? ? LED ?? 0 ? , ? 10/100M ??? ?? phy ??? 100M ???????? ?? phy ??? 10M ???????? 25~27 GP4~6 O GPIO ?? GPIO 4~6 ???????? 28,29,31 GP3~1 I/O GPIO ?? ?? : GPIO ??? SD8~15 ???? 8 bit ????? GPIO ?? DM9000A uP ?? 10/100M ??????????? ?? : 0.1 5 ?????? 04/08/30 3.3 EEPROM ?? ??? ???? ?? ???? 19 EEDIO I/O ????????? EEPROM 20 EECK O,LI EEPROM ?????? 21 EECS O,LI EEPROM ???? ?? : ??? LI ???????? 3.9 ?? 3.4 ????? ??? ???? ?? ???? 43 X2_25M O 25MHz ????? 44 X1_25M I 25MHz ????? 3.5 ?? PHY ????????? ??? ???? ?? ???? 39 LED1 O,#,E 10 /100M ??? ?? phy ??? 100M ???????? ?? phy ??? 10M ???????? ??? 16bit ?????? EEPROM ????????? 16 bit ?????? ???? 16 bit??????? MWCMD , MWCMDX , MRCMD, MRCMDX ?????????????(?????? ISA ????) 38 LED2 O,#,E ? LED ?? 1 ????? / ??????? ?? phy ?????????? ?? phy ?????????????(????) ? LED ?? 0 ? , ???????? ?? phy ?????????????(????) ?? : ??? EEPROM ??????????? 16bit ????? 3.6 10/100M PHY ????????? ??? ???? ?? ???? 46 SD I ???????? 48 BGGND P ????????? 1 BGRES I/O ???????? 2 AVDD_25 O , P RX ???? (2.5V) 3 RXI+ I ????? RX ???? 2 RXI- I ????? RX ???? 5 AGND P RX ????? 6 AGND P TX ????? 7 TXO+ O ????? TX ???? DM9000A uP ?? 10/100M ??????????? 6 ?? : 0.1 ?????? 04/08/30 8 TXO- O ????? TX ???? 9 AVDD_25 O , P TX ???? (2.5V) 3.7 ?????? ??? ???? ?? ???? 41 TEST I ?????????????? 40 PWRST# I, # ???????? ????? ???? ? EEPROM ?? DM9000A ??????? 100ms ?? : ??? LI ???????? 3.9 ?? 3.8 ???? ??? ???? ?? ???? 23,30,42 DVDD P ?????? (3.3V) 15,33,45 DGND P ????? 3.9 ?????? ??? ???? ?? ???? 27 GP6 O, LI ????? EEPROM ?? INT ?????? ( 8 bit ?????) ??????INT ????????? (open-collected) ????? , INT ????????? (force output) 20 EECK O, LI, ????? EEPROM ?? INT ??????? ??????INT ???????? ????? , INT ???????? 21 EECS O,LI ?????? ??????????? 8 bit ?? ????? , ????? 16 bit ?? ?? : ??????????? IC ????? 60k ohm DM9000A uP ?? 10/100M ??????????? ?? : 0.1 7 ?????? 04/08/30 ????DM9000A ?????????? DM9000A ????????????????? ????? ????? ?? ??? NCR Network Control Register ?????? 00h 00h NSR Network Status Register ?????? 01h 00h TCR TX Control Register ?????? 02h 00h TSR I TX Status Register I ?????? –1 03h 00h TSR II TX Status Register II ?????? –2 04h 00h RCR RX Control Register ?????? 05h 00h RSR RX Status Register ?????? 06h 00h ROCR Receive Overflow Counter Register ?????? 07h 00h BPTR Back Pressure Threshold Register Back Pressure ???? 08h 37h FCTR Flow Control Threshold Register Flow Control ???? 09h 38h FCR TX/RX Flow Control Register ?????? 0Ah 00h EPCR EEPROM & PHY Control Register EEPROM / PHY?? 0Bh 00h EPAR EEPROM & PHY Address Register EEPROM / PHY???? 0Ch 40h EPDRL EEPROM & PHY Low Byte Data Register EEPROM / PHY?? -L 0Dh XXh EPDRH EEPROM & PHY High Byte Data Register EEPROM / PHY?? -H 0Eh XXh WCR Wake Up Control Register ???? 0Fh 00h 10h 11h 12h 13h 14h PAR Physical Address Register MAC ???? 15h XXh by EEPR OM 16h XXh 17h XXh 18h XXh 19h XXh 1Ah XXh 1Bh XXh 1Ch XXh MAR Multicast Address Register Multicast ?? 1Dh XXh GPCR General Purpose Control Register GPIO ???? 1Eh 01h GPR General Purpose Register GPIO ???? 1Fh XXh 28h XXh [46h] VID Vendor ID ?? ID ? 29h XXh [0Ah] 2Ah XXh [00h] PID Product ID ?? ID ? 2Bh XXh [90h] CHIPR CHIP Revision IC ??? 2Ch 18h DM9000A uP ?? 10/100M ??????????? 8 ?? : 0.1 ?????? 04/08/30 TCR2 TX Control Register 2 ?????? -2 2Dh 00h ETXCSR Early Transmit Control / Status Register ???????? 30h 00h TCSCR Transmit Check Sum Control Register TCP/IP ??????????? 31h 00h RCSCSR Receive Check Sum Control Status Register TCP/IP ??????????? 32h 00h MRCMDX Memory Data Read Command Without Address Increment Register ???????????????? F0h XXh MRCMD Memory Data Read Command With Address Increment Register ??????????????? F2h XXh MRRL Memory Data Read_ address Register Low Byte ?????? –L F4h 00h MRRH Memory Data Read_ address Register High Byte ?????? -H F5h 00h MWCMDX Memory Data Write Command Without Address Increment Register ???????????????? F6h XXh MWCMD Memory Data Write Command With Address Increment Register ??????????????? F8h XXh MWRL Memory Data Write_ address Register Low Byte ?????? –L FAh 00h MWRH Memory Data Write _ address Register High Byte ?????? -H FBh 00h TXPLL TX Packet Length Low Byte Register ???????? -L FCh XXh TXPLH TX Packet Length High Byte Register ???????? -H FDh XXh ISR Interrupt Status Register ?????? FEh 00h IMR Interrupt Mask Register ?????? FFh 00h ??????????????????????????????????? ????DM9000A ????????????? ????? à ??????? à EEPROM / PHY ??? à WOL ??? à PAR , MAR ??? à GPIO ??? à ??????? à ??????? à ????? à DM9000A uP ?? 10/100M ??????????? ?? : 0.1 9 ?????? 04/08/30 ????DM9000A ??????????? ????????????? , 1 ????? 1 0 ????? 0 X ??????????? 1 ? 0 : WO ?? RO ?? RO/NC ???????????? RO/C ?????? 0 RW ??? RW/C1 ??????????? 1 RW/C1/C ??????????? 1 ????????? 0 RW/C1/NC ??????????? 1 ????????????????????? RW/NC ???????????????????????? 5.1. NCR ?????? (00h) Bit ?? ??? ?? 5:4 RESERVED 0,RO ??? 6 WAKEEN 0,RW/NC ?????? = 1 ?????? = 0 ??????? (??? 0 ??DM9000A ?? WCR 0Fh bit 0 ~ 2 ??? 0 ) 5:4 RESERVED 0,RO ??? 3 FDX 0,RW ? MAC ???????? = 1 ????? = 0 ????? 2:1 LBK 00,RW ???? Bit 2 1 0 0 ???? (???????) 0 1 DM9000A MAC ?????? 1 0 DM9000A ?? PHY 100M mode ?????? 1 1 (???) 0 RST 0,RW ?????? DM9000A ????????????????? 10us ????? ? 0 ?????? DM9000A uP ?? 10/100M ??????????? 10 ?? : 0.1 ?????? 04/08/30 5.2. NSR ?????? (01h) Bit ?? ??? ?? 7 SPEED 0,RO PHY ???? = 1 ??? 10Mbps = 0 ??? 100Mbps (? bit 6 ?? 1 ??????? ) 6 LINKST 0,RO PHY ???? = 1 PHY ??? = 0 PHY ???? 5 WAKEST 0,RW/C1/NC ??????? = 1 ??????? = 0 ???????? 4 RESERVED 0,RO ??? 3 TX2END 0, RW/C1/C ???? –2 ???? = 1 ????? = 0 ????? 2 TX1END 0, RW/C1/C ???? –1 ???? = 1 ????? = 0 ????? 1 RXOV 0,RO ????????? = 1 ????? = 0 ?????? 0 RESERVED 0,RO ??? 5.3. TCR ?????? (02h) Bit ?? ??? ?? 7 RESERVED 0,RO ??? 6 TJDIS 0,RW ???? Jabber ?? ( > 2048 bytes ??) = 1 ??? Jabber ?? = 0 ??? Jabber ?? 5 EXCECM 0,RW ???????? (?????? “????” (Collision) ?? 15 ?) = 1 ????????? = 0 ????????? 4 PAD_DIS2 0,RW ???? –2 ?????? 60 bytes ???? = 1 ????? = 0 ???? 3 CRC_DIS2 0,RW ???? –2 ??????? 4 bytes CRC ??? = 1 ????? CRC = 0 ???? CRC 2 PAD_DIS1 0,RW ???? –1 ?????? 60 bytes ???? = 1 ????? = 0 ???? 1 CRC_DIS1 0,RW ???? –1 ??????? 4 bytes CRC ??? = 1 ????? CRC = 0 ???? CRC 0 TXREQ 0,RW ???????? = 1 ?????? = 0 ?????? (?????????????? 0 ) 5.4. TSR I ?????? –1 ( 03h ) Bit ?? ??? ?? 7 TJTO 0,RO ?????? Jabber ?? ( > 2048 bytes) = 1 ?? Jabber ?? = 0 ? < 2048 bytes ?? 6 LOC 0,RO ???????? (? Bit ????????? NCR 00h bit 1~2 “LBK” ??? ) = 1 ???????? = 0 ???????? DM9000A uP ?? 10/100M ??????????? ?? : 0.1 11 ?????? 04/08/30 5 NC 0,RO ???? (? Bit ????????? NCR 00h bit 1~2 “LBK” ??? ) = 1 ??????? = 0 ??????? 4 LC 0,RO ??? 64 bytes ?????????????? ( ???????) = 1 ??????? = 0 ??????? 3 COL 0,RO ??? 64 bytes ?????????????? (???????) = 1 ??????? = 0 ??????? 2 EC 0,RO ????????? ( “????” (Collision) ?? 15 ?) = 1 ??????? = 0 ??????? 1:0 RESERVED 0,RO ??? 5.5. TSR II ?????? –2 ( 04h ) Bit ?? ??? ?? 7 TJTO 0,RO ?????? Jabber ?? ( > 2048 bytes) = 1 ?? Jabber ?? = 0 ? < 2048 bytes ?? 6 LOC 0,RO ???????? (? Bit ????????? NCR 00h bit 1~2 “LBK” ??? ) = 1 ???????? = 0 ???????? 5 NC 0,RO ???? (? Bit ????????? NCR 00h bit 1~2 “LBK” ??? ) = 1 ??????? = 0 ??????? 4 LC 0,RO ??? 64 bytes ?????????????? ( ???????) = 1 ??????? = 0 ??????? 3 COL 0,RO ??? 64 bytes ?????????????? (???????) = 1 ??????? = 0 ??????? 2 EC 0,RO ????????? ( “????” (Collision) ?? 15 ?) = 1 ??????? = 0 ??????? 1:0 RESERVED 0,RO ??? 5.6. RCR ?????? ( 05h ) Bit ?? ??? ?? 7 HASHALL 0,RW ????????? MAR ????(???? PAR ????? MAC) = 1 ???????? = 0 ???????? 6 WTDIS 0,RW ????? (????? > 2048 bytes ??) = 1 ??????? = 0 ??????? 5 DIS_LONG 0,RW ????????? ( > 1522 bytes ??) = 1 ??????? = 0 ??????? 4 DIS_CRC 0,RW ??? CRC ???? = 1 ??CRC???? = 0 ??CRC???? 3 ALL 0,RW ????? Multicast = 1 ???? Multicast = 0 ? MAR 16~1Dh ???? 2 RUNT 0,RW ?????? ( < 64 bytes ??) = 1 ?????? = 0 ??????? 1 PRMSC 0,RW ???????? = 1 ???????? = 0 ??? PAR , MAR ???? 0 RXEN 0,RW ???????? = 1 ???? = 0 ?????? DM9000A uP ?? 10/100M ??????????? 12 ?? : 0.1 ?????? 04/08/30 5.7. RSR ?????? ( 06h) Bit ?? ??? ?? 7 RF 0,RO ??????? ( < 64 bytes ??) = 1 ??????? = 0 ???????? 6 MF 0,RO ??? Multicast ?? = 1 ?? Multicast ?? = 0 ??? Multicast ?? 5 LCS 0,RO ??? 64 bytes ?????????????? ( ???????) = 1 ??????? = 0 ??????? 4 RWTO 0,RO ???? > 2048 bytes ?????? = 1 ??>2048 bytes? = 0 ???>2048 bytes? 3 PLE 0,RO ?????????? (???? CRC ??????) = 1 ??? = 0 ??? 2 AE 0,RO ??? Alignment ?? = 1 ?? Alignment ? = 0 ??? Alignment ? 1 CE 0,RO ?? CRC ???? = 1 ? CRC ???? = 0 ?? CRC ???? 0 FOE 0,RO ??????? = 1 ????? = 0 ?????? 5.8. ROCR ?????? ( 07H ) Bit ?? ??? ?? 7 RXFU 0,RO/C ?????? bit 0 ~ 6 ? ????? = 1 ????? = 0 ??????? 6:0 ROC 0,RO/C ???????????????????????? 5.9. BPTR Back Pressure ???? (08h) Bit ?? ??? ?? 7:4 BPHW 3H, RW ???????????????? jam ???????????????? ROCR 07h????? 3K-bytes ???????????????(????? 1K-bytes ) Jam ??????????? 200us bit3 bit2 bit1 bit0 time bit3 bit2 bit1 bit0 time bit3 bit2 bit1 bit0 time 3:0 JPT 7H, RW 0 0 0 0 5us 0 0 0 1 10us 0 0 1 0 15us 0 0 1 1 25us 0 1 0 0 50us 0 1 0 1 100us 0 1 1 0 150us 0 1 1 1 200us 1 0 0 0 250us 1 0 0 1 300us 1 0 1 0 350us 1 0 1 1 400us 1 1 0 0 450us 1 1 0 1 500us 1 1 1 0 550us 1 1 1 1 600us DM9000A uP ?? 10/100M ??????????? ?? : 0.1 13 ?????? 04/08/30 5.10. FCTR Flow Control ???? ( 09h ) Bit ?? ??? ?? 7:4 HWOT 3H, RW ???????????????????????(???? = FFFFH) ???? 3K-bytes ??????????????? (????? 1K-bytes ) 3:0 LWOT 8H, RW ???????????????????????(???? = 0000H) ???? 8K-bytes ??????????????? (????? 1K-bytes ) 5.11. FCR ?????? ( 0Ah ) Bit ?? ??? ?? 7 TXP0 0,RW ?? Flow Control ?????? (???? = 0000H) = 1 ???????? = 0 ????????? (?????????????????? 0 ) 6 TXPF 0,RW ?? Flow Control ?????? (???? = FFFFH) = 1 ???????? = 0 ????????? (?????????????????? 0 ) 5 TXPEN 0,RW ?????? Flow Control ?? (????????) = 1 ???????? = 0 ????????? 4 BKPA 0,RW ?? Back Pressure ???? ( ????????) = 1 ???????? = 0 ????????? (????? BPTR 08h ???????????????? jam ??) 3 BKPM 0,RW ?? Back Pressure ???? ( ????????) = 1 ???????? = 0 ????????? (????? BPTR 08h ??????????? MAC ??????? jam ? ?) 2 RXPS 0,RO/C ???? Flow Control ?? / ?? ???? = 1 ???? = 0 ???? 1 RXPCS 0,RO ???? Flow Control ?????? = 1 ??????? = 0 ???????? 0 FLCE 0,RW ???? Flow Control ???? = 1 ?? = 0 ??? (??????? Flow Control ??/?? ?????DM9000A ?????? ? ?/??????) 5.12. EPCR EEPROM / PHY ?? ( 0Bh ) Bit ?? ??? ?? 7:6 RESERVED 0,RO ??? 5 REEP 0,RW ?????? EEPROM (????????? bit ??? 0 ) = 1 ?????? = 0 ??? 4 WEP 0,RW ? EEPROM ??????? = 1 ????? = 0 ?????? 3 EPOS 0,RW ??? EEPROM / PHY ??? = 1 ??? PHY ?? = 0 ??? EEPROM ?? 2 ERPRR 0,RW ? bit 3 ??????????? (????????? bit ??? 0 ) = 1 ???? = 0 ????? DM9000A uP ?? 10/100M ??????????? 14 ?? : 0.1 ?????? 04/08/30 1 ERPRW 0,RW ? bit 3 ??????????? (????????? bit ??? 0 ) = 1 ???? = 0 ????? 0 ERRE 0,RO ?? bit 1~ 2 ?????? = 1 ????? = 0 ?????? 5.13. EPAR EEPROM / PHY ???? ( 0Ch ) Bit ?? ??? ?? 7:6 PHY_ADR 01,RW PHY ?? ??? PHY ???? 1 5:0 EROA 0,RW ?? EEPROM / PHY ?? EEPROM ? 64 ? ( 0 ~ 63) ?????? (128Byte / 2 = 64 word) PHY ??? 32 ? (0~31) ?????? 5.14. EPDRL EEPROM / PHY ?? –L ( 0Dh ) EPDRH EEPROM / PHY ?? –H ( 0Eh ) Bit ?? ??? ?? 7:0 EE_PHY_L X,RW ?? EEPROM / PHY Low Byte ?? ( 0Dh ) 7:0 EE_PHY_H X,RW ?? EEPROM / PHY High Byte ?? ( 0Eh ) 5.15. WCR ???? ( 0Fh ) Bit ?? Type ?? 7:6 RESERVED 0,RO ??? 5 LINKEN X,RW/NC ?? Link Status Change ???? = 1 ?? = 0 ??? ( LINKEN ?? EEPROM ?? 7 word bit 2 ??????????? 0 ) 4 SAMPLEEN 0,RW/NC ?? Sample Frame ???? = 1 ?? = 0 ??? 3 MAGICEN X,RW/NC ?? Magic Packet ???? = 1 ?? = 0 ??? ( MAGICEN ?? EEPROM ?? 7 word bit 3 ??????????? 0 ) 2 LINKST 0,RO/NC ????????? Link Status Change ???? = 1 ?????? = 0 ?????? 1 SAMPLEST 0,RO/NC ????????? Sample Frame ???? = 1 ?????? = 0 ?????? 0 MAGICST 0,RO/NC ????????? Magic Packet ???? = 1 ?????? = 0 ?????? ??? bit 0 ~ 2 ??? 0 ??? NCR 00h bit 6 (WAKEEN) ?? 0 DM9000A uP ?? 10/100M ??????????? ?? : 0.1 15 ?????? 04/08/30 5.16. PAR MAC ???? ( 10~15h ) Bit ?? ??? ?? 7:0 PAB5 X,RW MAC ?? Byte 5 (15h) 7:0 PAB4 X,RW MAC ?? Byte 4 (14h) 7:0 PAB3 X,RW MAC ?? Byte 3 (13h) 7:0 PAB2 X,RW MAC ?? Byte 2 (12h) 7:0 PAB1 X,RW MAC ?? Byte 1 (11h) 7:0 PAB0 X,RW MAC ?? Byte 0 (10h) ? DM9000A ????????????? EEPROM ?????? 6 ? Byte ???? 10h ~ 15h ? ???EEPROM ???? “60 00 90 6e 01 00 … … … … … .” ?? 10h = “00” , 11h=”60” , 12h=”6e” , 13h=”90” , 14h=”00” , 15h=”01” 5.17. MAR Multicast ?? ( 16~1Dh ) Bit ?? ??? ?? 7:0 MAB7 X,RW Multicast ?? Byte 7 (1Dh) 7:0 MAB6 X,RW Multicast ?? Byte 6 (1Ch) 7:0 MAB5 X,RW Multicast ?? Byte 5 (1Bh) 7:0 MAB4 X,RW Multicast ?? Byte 4 (1Ah) 7:0 MAB3 X,RW Multicast ?? Byte 3 (19h) 7:0 MAB2 X,RW Multicast ?? Byte 2 (18h) 7:0 MAB1 X,RW Multicast ?? Byte 1 (17h) 7:0 MAB0 X,RW Multicast ?? Byte 0 (16h) MAC Multicast ?? 01-00-00-00-00-00 ~ FF-FF-FF-FF-FF-FF ? 137,470,998,445,313 ? MAC ?? (MAC ?????byte ?? bit ?? 1 ?? Multicast ???????? byte ????? Multicast ????????????? Multicast ???? CRC-32 ???????????? Hash_Table ????? MAR ?? 5.18. GPCR GPIO ???? ( 1Eh ) Bit ?? ??? ?? 7:4 RESERVED 0,RO ??? 6 GEC6 1,RO GP6 pin25 ?????? 5 GEC5 1,RO GP5 pin26 ?????? 4 GEC4 1,RO GP4 pin27 ?????? 3 GEC3 0,RW GP3 pin28 ?? / ?? ???? = 1 ???? = 0 ???? 2 GEC2 0,RW GP2 pin29 ?? / ?? ???? = 1 ???? = 0 ???? 1 GEC1 0,RW GP1 pin31 ?? / ?? ???? = 1 ???? = 0 ???? 0 RESERVED 1,RO ??? DM9000A uP ?? 10/100M ??????????? 16 ?? : 0.1 ?????? 04/08/30 5.19. GPR GPIO ???? ( 1Fh ) Bit ?? ??? ?? 7 RESERVED 0,RO ??? 6 GEPIO6 0,RW GP6 pin25 ????? = 1 pin 25 ????? = 0 pi