AC101L-DS02-R datasheet(32/54 Pages) BOARDCOM

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AC101L

Preliminary Data Sheet

8/9/04

B roa dcom Co rpo rat ion

Page 22

Common Registers

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AC101L-DS06-R

COMMON REGISTERS

The following registers are mapped to Reg28-31 on the TP PHY. Reg28.[15:12] is used as page selection. There are multiple

pages of Reg29-31, depends on the value of Reg28[15:12].

COMMON REGISTER 0 (MAP TO REG28) MODE CONTROL REGISTER

23.6

MDIX state

Only valid when register 23.7 is set to 1.

0 = MDI

1= MDIX

23.5

Reserved

–

23.[4:0]

Reserved

–

XXXXX

Table 21: Register 24: CRC for Recent Received Packet

Bit

Name

Description

Mode

Default

24.[15:0]

CRC16

Displays CRC16 value. For system-level test purposes.

0000H

Table 22: Common Register 0 (Map to Reg. 28) Mode Control Register

Bit

Name

Description

Mode

Default

A.28.[15:12

]

Page Selection

Selects multiple common register pages.

0000

A.28.[11:7]

Reserved

Reserved.

0000

A.28.6

MII_enable

1 = Enables MII interface.

A.28.5

Reserved

Reserved.

A.28.4

Reserved

Reserved.

A.28.3

Reserved

Reserved.

A.28.2

Act select

Selects activity event.

0 = Receive activity.

1 = TX or RX activity.

A.28.1

Reserved

–

A.28.0

Reserved

–

Table 20: Register 23: Operation Mode Register (Cont.)

Bit

Name

Description

Mode

Default

AC101L-DS02-R Datasheet(PDF) 32 Page - Broadcom Corporation.

AC101L-DS02-R Datasheet(HTML) 32 Page - Broadcom Corporation.

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