DS64MB201_13 Datasheet, PDF (21/32 Pages) Texas Instruments – Dual Lane 2:1/1:2 Mux/Buffer with Equalization and De-Emphasis

DS64MB201
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0x40
SOB1
IDLE RATE Select
0x42
SOB1
VOD Control
0x43
SOB1
DE Control
0x47
Global VOD Adjust
SNLS307E – JANUARY 2011 – REVISED JULY 2013
Table 8. SMBus Register Map (continued)
7:6 Reserved
5
IDLE auto
4
IDLE select
3:2 Reserved
1
RATE auto
0
RATE select
7
Reserved
6:0 SOB1 VOD
7:0 SOB1 DEM
7:2 Reserved
1:0 VOD Adjust
R/W 0x00
R/W 0x03
R/W 0x03
R/W 0x02
Set bits to 0.
0: Allow IDLE_sel control in Bit 4
1: Automatic IDLE detect
0: Output is ON (SD is disabled)
1: Output is muted (electrical idle)
Set bits to 0.
0: Allow RATE_sel control in Bit 0
1: Automatic RATE detect
0: 2.5 to 3.2 Gbps
1: 5.0 to 6.4 Gbps
Set bit to 0.
SOB1 VOD Control
03'h = 600 mV (Default)
07'h = 800 mV
0F'h = 1000 mV
1F'h = 1200 mV
3F'h = Reserved
SOB1 DEM Control
[7]: DEM TYPE (Compatibility = 0 / Enhanced = 1)
[6:0]: DEM Level Control
Register [TYPE] [Level Control] = Hex Value
00000001 = 01'h = 0.0 dB
00111000 = E8'h = −3.5 dB
10001000 = 88'h = −6.0 dB
10010000 = 90'h = −9.0 dB
10100000 = A0'h = −12.0 dB
Set bits to 0.
00 = -25.0%
01 = -12.5%
10 = +0.0% (Default)
11 = +12.5%
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