DS100KR401_13 Datasheet, PDF (23/38 Pages) Texas Instruments – Ultra Low Power, 4 Lane (8-channel, bi-directional) Repeater for Data-rates up to 10.3 Gbps

DS100KR401
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Address
0x26
Register Name
CH3 - CHB3
DEM
0x27
CH3 - CHB3
IDLE Threshold
0x2B
0x2C
0x2D
CH4 - CHA0
Reserved
CH4 - CHA0
EQ
CH4 - CHA0
VOD
0x2E
CH4 - CHA0
DEM
SNLS395B – JANUARY 2012 – REVISED MARCH 2012
Table 8. SMBUS Slave Mode Register Map (continued)
Bit (s) Field
7
STATUS
6:5 STATUS
4:3 Reserved
2:0 DEM Control
7:4 Reserved
3:2 IDLE thd
1:0 IDLE tha
7:0 Reserved
Type
R
R
R/W
R/W
Default
0x02
R/W 0x00
R/W 0x00
Description
Observation bit for CH3 - CHB3.
Observation bit for CH3 - CHB3.
Set bits to 0.
OB3 DEM Control
000: 0 dB
001: –1.5 dB
010: –3.5 dB (default)
011: –5 dB
100: –6 dB
101: –8 dB
110: –9 dB
111: –12 dB
Set bits to 0.
De-assert threshold
00 = 110 mVp-p (default)
01 = 100 mVp-p
10 = 150 mVp-p
11 = 130 mVp-p
Note: override the SD_TH pin.
Assert threshold
00 = 180 mVp-p (default)
01 = 160 mVp-p
10 = 210 mVp-p
11 = 190 mVp-p
Note: override the SD_TH pin.
Set bits to 0.
7:0 EQ Control
7
Short Circuit
Protection
6
Reserved
5:3 Reserved
2:0 VOD Control
7
STATUS
6:5 STATUS
4:3 Reserved
2:0 DEM Control
R/W 0x2F
R/W 0xAD
R
0x02
R
R/W
R/W
IA0 EQ Control - total of 256 levels.
See Table 2.
1: Enable the short circuit protection
0: Disable the short circuit protection
Set bit to 0.
Set bits to default value - 101.
OA0 VOD Control
000: 0.7 V
001: 0.8 V
010: 0.9 V
011: 1.0 V
100: 1.1 V
101: 1.2 V (default)
110: 1.3 V
111: 1.4 V
Observation bit for CH4 - CHA0.
Observation bit for CH4 - CHA0.
Set bits to 0.
OA0 DEM Control
000: 0 dB
001: –1.5 dB
010: –3.5 dB (default)
011: –5 dB
100: –6 dB
101: –8 dB
110: –9 dB
111: –12 dB
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