AX88780

Content

1.0 Introduction.......................................................................................................................................................................6

1.1 General Description .......................................................................................................................................................6

1.2 AX88780 Block Diagram...............................................................................................................................................6

1.3 AX88780 Pinout Diagram..............................................................................................................................................7

2.0 Signal Description .............................................................................................................................................................8

2.1 Signal Type Definition ...................................................................................................................................................8

2.2 Host Interface.................................................................................................................................................................8

2.3 EEPROM Interface (Optional).......................................................................................................................................9

2.4 Regulator Interface.......................................................................................................................................................10

2.5 10/100M PHY Interface ...............................................................................................................................................10

2.6 MII Interface (optional)................................................................................................................................................10

2.7 Miscellaneous ..............................................................................................................................................................11

2.8 Power/ground pin.........................................................................................................................................................11

3.0 Functional Description ...................................................................................................................................................12

3.1 Host Interface...............................................................................................................................................................12

3.2 System Address Range.................................................................................................................................................12

3.3 TX Buffer Operation ....................................................................................................................................................12

3.4 RX Buffer Operation....................................................................................................................................................12

3.5 Flow Control ................................................................................................................................................................13

3.6 Checksum Offloads and Wake-up ................................................................................................................................13

3.7 Fast-Mode support .......................................................................................................................................................13

3.8 Big/Little-endian support .............................................................................................................................................13

3.9 10/100BASE-TX PHY.................................................................................................................................................13

3.10 16-bit Mode................................................................................................................................................................14

3.11 EEPROM Format .......................................................................................................................................................14

4.0 Register Description........................................................................................................................................................16

4.1 CMD--Command Register ...........................................................................................................................................17

4.2 IMR--Interrupt Mask Register .....................................................................................................................................17

4.3 ISR--Interrupt Status Register......................................................................................................................................18

4.4 TX_CFG--TX Configuration Register .........................................................................................................................19

4.5 TX_CMD--TX Command Register .............................................................................................................................19

4.6 TXBS--TX Buffer Status Register ...............................................................................................................................19

4.7 PHY_CTRL-- Internal PHY Control Register .............................................................................................................20

4.8 TXDES0--TX Descriptor0 Register.............................................................................................................................21

4.9 TXDES1--TX Descriptor1 Register.............................................................................................................................21

4.10 TXDES2--TX Descriptor2 Register...........................................................................................................................21

4.11 TXDES3--TX Descriptor3 Register ...........................................................................................................................22

4.12 RX_CFG--RX Configuration Register.......................................................................................................................22

4.13 RXCURT--RX Current Pointer Register ....................................................................................................................22

4.14 RXBOUND--RX Boundary Pointer Register ............................................................................................................23

4.15 MAC_CFG0--MAC Configuration0 Register............................................................................................................23

4.16 MAC_CFG1--MAC Configuration1 Register............................................................................................................23

4.17 MAC_CFG2--MAC Configuration2 Register............................................................................................................24

4.18 MAC_CFG3--MAC Configuration3 Register............................................................................................................24

4.19 TXPAUT--TX Pause Time Register ...........................................................................................................................24

4.20 RXBTHD0--RX buffer Threshold0 Register .............................................................................................................25

4.21 RXBTHD1--RX Buffer Threshold1 Register ............................................................................................................25

4.22 RXFULTHD--RX Buffer Full Threshold Register.....................................................................................................25

4.23 MISC—Misc. Control Register .................................................................................................................................25

4.24 MACID0--MAC ID0 Register ...................................................................................................................................26

4.25 MACID1--MAC ID1 Register ...................................................................................................................................26

4.26 MACID2--MAC ID2 Register ...................................................................................................................................26

4.27 TXLEN--TX Length Register ....................................................................................................................................26

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ASIX ELECTRONICS CORPORATION