DS125BR800 Datasheet, PDF (22/59 Pages) Texas Instruments – Low-Power 12.5-Gbps 8-Channel Repeater With Input Equalization and Output De-Emphasis

DS125BR800
SNLS426E – AUGUST 2012 – REVISED JANUARY 2015
www.ti.com
Table 8. Example of EEPROM for Four Devices Using Two Address Maps (continued)
EEPROM Address
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
Address (Hex)
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
50
51
52
53
54
EEPROM Data
0x54
0x00
0x00
0x04
0x07
0x00
0x00
0xAB
0x00
0x00
0x0A
0xB0
0x00
0x00
0xAB
0x00
0x00
0x0A
0xB0
0x01
0x80
0x01
0x56
0x00
0x00
0x15
0x60
0x00
0x01
0x56
0x00
0x00
0x15
0x60
0x00
0x00
0x54
0x54
Comments
End Device 0, 1 - Address Offset 39
Begin Device 2, 3 - Address Offset 3
EQ CHB0 = 00
VOD CHB0 = 1.0 V
DEM CHB0 = 0 (0 dB)
EQ CHB1 = 00
VOD CHB1 = 1.0 V
DEM CHB1 = 0 (0 dB)
EQ CHB2 = 00
VOD CHB2 = 1.0 V
DEM CHB2 = 0 (0 dB)
EQ CHB3 = 00
VOD CHB3 = 1.0 V
DEM CHB3 = 0 (0 dB)
EQ CHA0 = 00
VOD CHA0 = 1.0 V
DEM CHA0 = 0 (0 dB)
EQ CHA1 = 00
VOD CHA1 = 1.0 V
DEM CHA1 = 0 (0 dB)
EQ CHA2 = 00
VOD CHA2 = 1.0 V
DEM CHA2 = 0 (0 dB)
EQ CHA3 = 00
VOD CHA3 = 1.0 V
DEM CHA3 = 0 (0 dB)
End Device 2, 3 - Address Offset 39
NOTE: CRC_EN = 0, Address Map = 1, >256 byte = 0, Device Count[3:0] = 3. This example has all 8 channels
set to EQ = 00 (min boost), VOD = 1.0 V, DEM = 0 (0 dB) and multiple device can point to the same address
map. Maximum EEPROM size is 8kbits (1024 x 8-bits).
8.5.2 Transfer of Data Via the SMBus
During normal operation the data on SDA must be stable during the time when SCL is High.
There are three unique states for the SMBus:
START: A High-to-Low transition on SDA while SCL is High indicates a message START condition.
22
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