AX88180

3

ASIX ELECTRONICS CORPORATION

Content

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

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

1.2 AX88180 Block Diagram...............................................................................................................................................6

1.3 AX88180 Pinout Diagram..............................................................................................................................................7

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

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

2.2 RGMII/MII Interface .....................................................................................................................................................8

2.3 Host Interface.................................................................................................................................................................9

2.4 EEPROM Interface ......................................................................................................................................................10

2.5 Regulator Interface.......................................................................................................................................................10

2.6 Miscellaneous ..............................................................................................................................................................11

2.7 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 Burst-Mode support .....................................................................................................................................................13

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

3.9 16-bit Mode..................................................................................................................................................................13

3.10 EEPROM Format .......................................................................................................................................................14

4.0 Register Description .........................................................................................................................................................15

4.1 CMD--Command Register ...........................................................................................................................................16

4.2 IMR--Interrupt Mask Register .....................................................................................................................................16

4.3 ISR--Interrupt Status Register ......................................................................................................................................17

4.4 TX_CFG--TX Configuration Register .........................................................................................................................18

4.5 TX_CMD--TX Command Register .............................................................................................................................18

4.6 TXBS--TX Buffer Status Register ...............................................................................................................................18

4.7 TXDES0--TX Descriptor0 Register.............................................................................................................................19

4.8 TXDES1--TX Descriptor1 Register.............................................................................................................................19

4.9 TXDES2--TX Descriptor2 Register.............................................................................................................................20

4.10 TXDES3--TX Descriptor3 Register...........................................................................................................................20

4.11 RX_CFG--RX Configuration Register.......................................................................................................................20

4.12 RXCURT--RX Current Pointer Register ....................................................................................................................21

4.13 RXBOUND--RX Boundary Pointer Register ............................................................................................................21

4.14 MAC_CFG0--MAC Configuration0 Register............................................................................................................21

4.15 MAC_CFG1--MAC Configuration1 Register............................................................................................................21

4.16 MAC_CFG2--MAC Configuration2 Register............................................................................................................22

4.17 MAC_CFG3--MAC Configuration3 Register............................................................................................................23

4.18 TXPAUT--TX Pause Time Register ...........................................................................................................................23

4.19 RXBTHD0--RX buffer Threshold0 Register .............................................................................................................23

4.20 RXBTHD1--RX Buffer Threshold1 Register ............................................................................................................23

4.21 RXFULTHD--RX Buffer Full Threshold Register.....................................................................................................24

4.22 MISC—Misc. Control Register .................................................................................................................................24

4.23 MACID0--MAC ID0 Register ...................................................................................................................................24

4.24 MACID1--MAC ID1 Register ...................................................................................................................................24

4.25 MACID2--MAC ID2 Register ...................................................................................................................................25

4.26 TXLEN--TX Length Register ....................................................................................................................................25

4.27 RXFILTER--RX Packet Filter Register .....................................................................................................................25

4.28 MDIOCTRL--MDIO Control Register ......................................................................................................................26

4.29 MDIODP--MDIO Data Port Register ........................................................................................................................26

4.30 GPIO_CTRL--GPIO Control Register.......................................................................................................................26