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Cirrus Logic EP93xx User Manual

Page 369

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DS785UM1

9-67

Copyright 2007 Cirrus Logic

1/10/100 Mbps Ethernet LAN Controller

EP93xx User’s Guide

9

9

9

Soft Reset:

0x0000_0000

Definition:

MII Status Register

Bit Descriptions:

RSVD:

Reserved. Unknown During Read.

Busy:

MII Busy. The Busy bit is set whenever a command is
written to the MII Command Register. It is cleared when
the operation has been completed.

Descriptor Processor Registers

The Descriptor Processor Registers are in three parts: the bus master control, receive
registers, and transmit registers.

BMCtl

Address:

0x8001_0080 - Read/Write

Chip Reset:

0x0000_0000

Soft Reset:

0x0000_0000

Definition:

Bus Master Control Register

Bit Descriptions:

RSVD:

Reserved. Unknown During Read.

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

RSVD

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

RSVD

MT

TT

UnH

TxChR

TxDis

TxEn

RSVD

EH2

EH1

EEOB

RSVD

RxChR

RxDis

RxEn