AR8327-AL1A-R datasheet(69/394 Pages) ETC2

69 / 394 page

Atheros Communications, Inc.

AR8327/AR8327N Seven-port Gigabit Ethernet

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69

Table 3-14 summarizes the MIB Function Register 1.

3.2.12

INTERFACE_HIGH_ADDR

Address 0x0038

HW RST

Table 3-15 summarizes the INTERFACE_HIGH_ADDR Register.

Table 3-14.

MIB Function Register 1

Bit

R/W

Inital

Value

Mnemonic

Description

31:27

R/O

RESERVED

26:24

R/W

MIB_FUNC

3'b000: no operation;

3'b001: flush all counters for all ports;

3'b010: reserved for future.

3'b011: capture all counters for all ports

and auto-cast to cpu port;

3'b1xx:reserved for future.

23:21

R/O

RESERVED

R/W

MIB_CPU_KEEP

1’b1: Does not clear MIB counter after

it has been read.

1’b0: clear MIB counter to zero after

read

19:18

R/O

RESERVED

R/W SC

MIB_BUSY

1'b1: mib module is busy now, and

can't access another new command.

1'b0: mib module is empty now, and

can access new command.

R/W

1’b0

MIB_AT_HALF_EN

MIB auto-cast enable due to half flow.

If this bit is set to 1'b1, MIB would be

auto-cast when any counter's highest

bit count to 1'b1.

15:0

R/W

15’h0

MIB_TIMER

MIB auto-cast timer. If these bits are set

to zero, MIB won't auto-cast due to

timer time out. The time is times of

8.4ms, recommended value is 'h100.

Table 3-15.

MInterface High Address Register

Bit

R/W

Inital

Value

Mnemonic

Description

R/O

SPI_SPEED

1'b1: fast speed for test

1'b0: normal operation mode

30:28

R/W

RESERVED

27:24

R/W

0Xf

RELOAD_TIMER

Reload EEPROM timer.

If the EEPROM can't be read out, EEPROM

should be reload when the timer done. It's

times 8ms. If these bits are set to zero,

needn't reload EEPROM.

23:20

R/W

RESERVED

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