ASIX ELECTRONICS CORPORATION

36

CONFIDENTIAL

AX88872P Swipeater Controller

PRELIMINARY

B.2 Using MII I/F connects to MAC

There are two ports of AX88872 can connect to MAC type MII interface. For example, Switch Port 0 is

illustrated bellow.

3.3V

10K * 2

10K

Gnd

AX88872 / Swipeater

AX88195 / MAC

Note : 1. The MAC needs to run at fullduplex mode.

2. Care must be taken that the receive side has enough setup and/or hold time

3. Some kind of CPU with embbeded MAC can also refer to this example

SDUPLEX0

SCOL0

STXEN0

STXCLK0

STXD0[3:0]

SCRS0

SRXDV0

SRXCLK0

SRXD0[3:0]

COL

CRS

RX_DV

RX_CLK

RXD[3:0]

RX_ER

TX_EN

TX_CLK

TXD[3:0]

TX_ER

25MHz

Clock