DS125MB203_15 Datasheet, PDF (28/54 Pages) Texas Instruments – Low-Power 12.5-Gbps Dual-Lane 2:1/1:2 Mux/Buffer

DS125MB203
SNLS432C – OCTOBER 2012 – REVISED DECEMBER 2015
ADDRESS
REGISTER
NAME
BIT
7
0x2E
6:5
4:3
CH4
D_IN0 – S_OUTA0
DEM
2:0
0x2F
7
CH4
6:4
D_IN0 – S_OUTA0
Reserved
3:2
1:0
0x30-0x31
Reserved
7:0
7:6
0x32
5:4
Reserved
3:2
1:0
0x33
CH5
NC – S_OUTB0
7:0
Reserved
Table 7. SMBUS Slave Mode Register Map (continued)
FIELD
RXDET Status
Reserved
Reserved
DEM Control
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
TYPE DEFAULT
R
0x02
R/W
R/W
0x00
R/W
0x00
R/W
0x00
EEPROM
REG BIT
Yes
Yes
Yes
Yes
Yes
Yes
DESCRIPTION
Observation bit for RXDET CH4 - CHA_0
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
Set bits to 0
Set bits to 0
DEM Control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
Set bit to 0
Set bits to 0
Set bits to 0
Set bits to 0
Set bits to 0
Set bits to 0
Set bits to 0
Set bits to 0
Set bits to 0
Reserved
R/W
0x2F
Yes
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