DM9161 datasheet(27/47 Pages) ETC

27 / 47 page

DM9161

10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver

Final

Version: DM9161-DS-F02

May 10,2002

8.7 Auto-negotiation Expansion Register (ANER)- 06

6.15-6.5

Reserved

0, RO

Reserved

Read as 0, ignore on write

6.4

PDF

0, RO/LH

Local Device Parallel Detection Fault

PDF = 1: A fault detected via parallel detection function.

PDF = 0: No fault detected via parallel detection function

6.3

LP_NP_ABLE

0, RO

Link Partner Next Page Able

LP_NP_ABLE = 1: Link partner, next page available

LP_NP_ABLE = 0: Link partner, no next page

6.2

NP_ABLE

0,RO/P

Local Device Next Page Able

NP_ABLE = 1: DM9161, next page available

NP_ABLE = 0: DM9161, no next page

DM9161 does not support this function, so this bit is always 0

6.1

PAGE_RX

0, RO/LH

New Page Received

A new link code word page received. This bit will be automatically

cleared when the register (register 6) is read by management

6.0

LP_AN_ABLE

0, RO

Link Partner Auto-negotiation Able

A “1” in this bit indicates that the link partner supports Auto-

negotiation

8.8 DAVICOM Specified Configuration Register (DSCR) - 16

Bit

Bit Name

Default

Description

16.15

BP_4B5B

0,RW

Bypass 4B5B Encoding and 5B4B Decoding

1 = 4B5B encoder and 5B4B decoder function bypassed

0 = Normal 4B5B and 5B4B operation

16.14

BP_SCR

0, RW

Bypass Scrambler/Descrambler Function

1 = Scrambler and descrambler function bypassed

0 = Normal scrambler and descrambler operation

16.13

BP_ALIGN

0, RW

Bypass Symbol Alignment Function

1 = Receive functions (descrambler, symbol alignment and symbol

decoding functions) bypassed. Transmit functions (symbol encoder

and scrambler) bypassed

0 = Normal operation

16.12

BP_ADPOK

0, RW

BYPASS ADPOK

Force signal detector (SD) active. This register is for debug only, not

release to customer

1=Forced SD is OK,

0=Normal operation

16.11

REPEATER

(Pin#38),RW Repeater/Node Mode

The value of the Repeater/Node pin (38) is latched into this bit at

power-up/reset

1 = Repeater mode

0 = Node mode

16.10

1, RW

100BASE-TX Mode Control

1 = 100BASE-TX operation

16.9

Reserved

1, RO

Reserved

16.8

RMII_Enable

(Pin#36), RW Reduced MII Enable

Select normal MII or reduced MII. The value of the RMII pin(36) is

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