dm9302 Davicom Semiconductor, Inc., dm9302 Datasheet - Page 46

• Manufacturer Part Number: dm9302
• Description: 10/100mbps Ethernet Fiber/twisted Pair Media Converter With Local Bus
• Manufacturer: Davicom Semiconductor, Inc.

8.12 (Specified config) Register – 14H
46
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MDIX_CNTL
FORCE_TXSD
AutoNeg_dpbk
Mdix_fix Value
PREAMBLEX
TX10M_PWR
FORCE_FEF
NWAY_PWR
Mdix_down
Bit Name
Reserved
Reserved
PD_value
MonSel1
MonSel0
TSTSE1
TSTSE2
MDI/MDIX,RO The polarity of MDI/MDIX value
10/100Mbps Ethernet Fiber/Twisted Pair Media Converter with Local bus
Default
0, RW
0, RO
0,RW
0,RW
0,RW
0,RW
0,RW
1,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
0,RW
Vendor test select 1 control
Vendor test select 2 control
Force Signal Detect
1: force SD signal OK in 100M
0: normal SD signal.
Vendor test select control
Preamble Saving Control
0: when bit 10 is set, the 10BASE-T transmit preamble count is
1: transmit preamble bit count is normal in 10BASE-T mode
10BASE-T mode Transmit Power Saving Control
1: enable transmit power saving in 10BASE-T mode
0: disable transmit power saving in 10BASE-T mode
Auto-negotiation Power Saving Control
1: disable power saving during auto-negotiation period
0: enable power saving during auto-negotiation period
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.
0: Enable HP Auto-MDIX
1: Disable HP Auto-MDIX ,
MDIX_CNTL value depend on Reg.14H.bit5
Vendor monitor select 1
Vendor monitor select 0
Reserved
Force to 0, in application.
Power down control value
Decision the value of each field Reg.13H.
1: power down
0: normal
reduced. When bit 11 of register 1DH is set, 12-bit preamble is
reduced; otherwise 22-bit preamble is reduced.
Description
DM9302
Preliminary datasheet
DM9302-15-DS-P01
July 30, 2009