DS50PCI402 Datasheet, PDF (21/36 Pages) Texas Instruments – DS50PCI402 2.5 Gbps / 5.0 Gbps 4 Lane PCI Express Repeater with Equalization and De-Emphasis

TABLE 9. SMBus Register Map
Address Register Name
0x00
Reset
0x01
PWDN Channels
Bit (s) Field
7:1 Reserved
0
Reset
7:0 PWDN CHx
0x02
0x08
PWDN Control
7:1 Reserved
0
Override PWDN
Pin Control Override 7:5
4
Reserved
Override IDLE
3
Reserved
2
Override RATE
1:0 Reserved
Type Defaul Description
t
R/W 0x00 Set bits to 0.
SMBus Reset
1: Reset registers to default value
R/W 0x00 Power Down per Channel
[7]: CHA_3
[6]: CHA_2
[5]: CHA_1
[4]: CHA_0
[3]: CHB_3
[2]: CHB_2
[1]: CHB_1
[0]: CHB_0
00'h = all channels enabled
FF'h = all channels disabled
R/W 0x00 Set bits to 0.
0: Allow PWDN pin control
1: Block PWDN pin control
R/W 0x00 Set bits to 0.
0: Allow IDLE pin control
1: Block IDLE pin control
Set bit to 0.
0: Allow RATE pin control
1: Block RATE pin control
Set bits to 0.
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