XIO2000AI TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS], XIO2000AI Datasheet - Page 127

• Manufacturer Part Number: XIO2000AI
• Description: PCI Express to PCI Bus Translation Bridge
• Manufacturer: TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS]

5.28 Port Arbitration Table (VC1)
April 2007 Revised October 2008
Phase 103
Phase 127
Phase 111
Phase 119
Phase 15
Phase 23
Phase 31
Phase 39
Phase 47
Phase 55
Phase 63
Phase 71
Phase 79
Phase 87
Phase 95
BIT
3:0
Phase 7
The port arbitration table is provided to allow software to define round-robin weighting for traffic entering the
PCI interface. The table is divided into 128 phases.
Each phase consists of a four-bit field as indicated below.
RESET STATE
BIT NUMBER
PORT_SELECT
FIELD NAME
PCI Express extended register offset:
Register type:
Default value:
Phase 102
Phase 110
Phase 118
Phase 126
Phase 14
Phase 22
Phase 30
Phase 38
Phase 46
Phase 54
Phase 62
Phase 70
Phase 78
Phase 86
Phase 94
Phase 6
ACCESS
3
0
Phase 101
Phase 109
Phase 117
Phase 125
Phase 13
Phase 21
Phase 29
Phase 37
Phase 45
Phase 53
Phase 61
Phase 69
Phase 77
Phase 85
Phase 93
RW
Phase 5
Table 5−26. Port Arbitration Table Entry Description
2
0
Port arbitration select. This 4-bit field is used by software to identify the port ID (secondary PCI
device) that must be allocated to this slot of arbitration bandwidth depending upon the port
arbitration scheme enabled. The default value for this field is 0h.
1
0
Table 5−25. Port Arbitration Table
Phase 100
Phase 108
Phase 124
Phase 116
Phase 12
Phase 20
Phase 28
Phase 36
Phase 44
Phase 52
Phase 60
Phase 68
Phase 76
Phase 84
Phase 92
Phase 4
REGISTER FORMAT
0
0
Phase 107
Phase 115
Phase 123
Phase 19
Phase 27
Phase 35
Phase 43
Phase 51
Phase 59
Phase 67
Phase 75
Phase 83
Phase 91
Phase 99
Phase 11
Phase 3
1C0h
Read/Write
0000 0000h
–
1FCh
Phase 106
Phase 122
Phase 114
Phase 10
Phase 18
Phase 26
Phase 34
Phase 42
Phase 50
Phase 58
Phase 66
Phase 74
Phase 82
Phase 90
Phase 98
Phase 2
DESCRIPTION
PCI Express Extended Configuration Space
Phase 105
Phase 121
Phase 113
Phase 17
Phase 25
Phase 33
Phase 41
Phase 49
Phase 57
Phase 65
Phase 73
Phase 81
Phase 89
Phase 97
Phase 1
Phase 9
Phase 104
Phase 112
Phase 120
Phase 16
Phase 24
Phase 32
Phase 40
Phase 48
Phase 56
Phase 64
Phase 72
Phase 80
Phase 88
Phase 96
Phase 0
Phase 8
SCPS155C
OFFSET
1CCh
1DCh
1ECh
1C0h
1C4h
1C8h
1D0h
1D4h
1D8h
1E0h
1E4h
1E8h
1FCh
1F0h
1F4h
1F8h
117