DM9161B
10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver
Final 28
Version: DM9161B-12-DS-F01
January 31, 2008
8.7 Auto-negotiation Expansion Register (ANER) - 06
Bit Bit Name Default Description
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: DM9161B, next page available
NP_ABLE = 0: DM9161B, no next page
DM9161B 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 1, 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 TX 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
