DM9161CI DAVICOM [Davicom Semiconductor, Inc.], DM9161CI Datasheet - Page 33

• Manufacturer Part Number: DM9161CI
• Description: Industrial-Temperature 10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

8.12 (Specified config) Register – 20
35
20.15
20.14
20.13
20.12
20.11
20.10
20.9
20.8
20.7
20.6
20.5
20.4
20.3
20.2
20.1
20.0
Bit
AutoNeg_dpbk
Mdix_fix Value
PREAMBLEX
TX10M_PWR
NWAY_PWR
Mdix_do wn
MDIX_CNTL MDI/MDIX,RO The polarity of MDI/MDIX value
Bit Name
Reserved
TSTSEL3
Reserved
PD_value
RMII_Ver
MonSel1
MonSel0
TSTSE1
TSTSE2
Default
0, RW
0, RO
0, RO
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver
Vendor test select control
Vendor test select control
Reserved
Read as 0, ignore on write
Vendor test select control
Preamble Saving Control
1: 10M TX preamble bit count is normal.
0:when bit 10 is set, the 10M TX preamble count is reduced
10M TX Power Saving Control
1: enable 10M TX power saving
0: disable 10M TX power saving
N-Way Power Saving Control
1: disable N-Way power saving
0: enable N-Way power saving
Reserved
Read as 0, ignore on write
1: MDIX mode
0: MDI mode
Auto-negotiation Loopback
1: test internal digital auto-negotiation Loopback
0: normal.
MDIX_CNTL force value:
When MDIX_DOWN = 1, MDIX_CNTL value depend on the
register value.
MDIX Down
Manual force MDI/MDIX.
1: Disable HP Auto-MDIX , MDIX_CNTL value depend on 20.5
0: Enable HP Auto-MDIX
Vendor monitor select
Vendor monitor select
RMII version
1: support RMII 1.0
0: support RMII 1.2
Power down control value
Decision the value of each field Register 19.
1: power down
0: normal
When bit 11 of register 29 is set, 12-bit preamble bit is reduced.
Otherwise 22-bit preamble bit is reduced.
Description
Version: DM9161CI-DS-F01
DM9161CI
February 22, 2012
Final