DS80PCI800SQ Datasheet, PDF (21/45 Pages) Texas Instruments – DS80PCI800 2.5 Gbps / 5.0 Gbps / 8.0 Gbps 8 Channel PCI Express Repeater

DS80PCI800
www.ti.com
SNLS334E – APRIL 2011 – REVISED MARCH 2012
Table 7. Example of EEPROM for 4 Devices using 2 Address Maps (continued)
47
2F
0x54
End Device 0, 1 - Address Offset 39
48
30
0x00
Begin Device 2, 3 - Address Offset 3
49
31
0x00
50
32
0x04
51
33
0x07
52
34
0x00
53
35
0x00
EQ CHB0 = 00
54
36
0xAB
VOD CHB0 = 1.0V
55
37
0x00
DEM CHB0 = 0 (0dB)
56
38
0x00
EQ CHB1 = 00
57
39
0x0A
VOD CHB1 = 1.0V
58
3A
0xB0
DEM CHB1 = 0 (0dB)
59
3B
0x00
60
3C
0x00
EQ CHB2 = 00
61
3D
0xAB
VOD CHB2 = 1.0V
62
3E
0x00
DEM CHB2 = 0 (0dB)
63
3F
0x00
EQ CHB3 = 00
64
40
0x0A
VOD CHB3 = 1.0V
65
41
0xB0
DEM CHB3 = 0 (0dB)
66
42
0x01
67
43
0x80
68
44
0x01
EQ CHA0 = 00
69
45
0x56
VOD CHA0 = 1.0V
70
46
0x00
DEM CHA0 = 0 (0dB)
71
47
0x00
EQ CHA1 = 00
72
48
0x15
VOD CHA1 = 1.0V
73
49
0x60
DEM CHA1 = 0 (0dB)
74
4A
0x00
75
4B
0x01
EQ CHA2 = 00
76
4C
0x56
VOD CHA2 = 1.0V
77
4D
0x00
DEM CHA2 = 0 (0dB)
78
4E
0x00
EQ CHA3 = 00
79
4F
0x15
VOD CHA3 = 1.0V
80
50
0x60
DEM CHA3 = 0 (0dB)
81
51
0x00
82
52
0x00
83
53
0x54
84
54
0x54
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 = 1.0V, DEM = 0 (0dB) and multiple device can point to the same address map.
System Management Bus (SMBus) and Configuration Registers
The System Management Bus interface is compatible to SMBus 2.0 physical layer specification. ENSMB = 1kΩ
to VDD to enable SMBus slave mode and allow access to the configuration registers.
The DS80PCI800 has the AD[3:0] inputs in SMBus mode. These pins are the user set SMBUS slave address
inputs. The AD[3:0] pins have internal pull-down. When left floating or pulled low the AD[3:0] = 0000'b, the device
default address byte is B0'h. Based on the SMBus 2.0 specification, the DS80PCI800 has a 7-bit slave address.
The LSB is set to 0'b (for a WRITE). The device supports up to 16 address byte, which can be set with the
AD[3:0] inputs. Below are the 16 addresses.
Copyright © 2011–2012, Texas Instruments Incorporated
Submit Documentation Feedback
21
Product Folder Links: DS80PCI800