AGP接口定义
AGP接口引脚定义
AGP接口简介
AGP，全称为加速图像处理端口（Accelerated Graphics Port），是电脑主板上的一种高速点对点传输通道，供显卡使用，主要应用在三维电脑图形的加速上。AGP是在1997年由Intel提出，是从PCI标准上建立起来，是一种显卡专用接口。
AGP（Accelerate Graphical Port），加速图形接口。随着显示芯片的发展，PCI总线日益无法满足其需求。英特尔于1996年7月正式推出了AGP接口，它是一种显示卡专用的局部总线。严格的说，AGP不能称为总线，它与PCI总线不同，因为它是点对点连接，即连接控制芯片和AGP显示卡，但在习惯上我们依然称其为AGP总线。AGP接口是基于PCI 2.1 版规范并进行扩充修改而成，工作频率为66MHz。
132pin EDGE (AGP bus) 链接器外图
AGP cards and slots
Graphics Card Types
Connector Type*
Description
AGP 3.3V Card
3.3V slot
Supports only 3.3V signaling. Available speeds 1x, 2x.
AGP 1.5V Card
1.5V slot
Supports only 1.5V signaling. Available speeds 1x, 2x, 4x.
Universal AGP Card
Double slotted
Supports 3.3V and 1.5V signaling. Available speeds 1x, 2x at 3.3V and 1x, 2x, 4x at 1.5V.
AGP 3.0 Card
1.5V slot
Supports only 0.8V signaling. Available speeds 4x, 8x.
Universal 1.5V AGP 3.0 Card
1.5V slot
Supports 1.5V and 0.8V signaling. Available speeds 1x, 2x, 4x at 1.5V and 4x, 8x at 0.8V.
Universal AGP 3.0 Card
Double slotted
Supports AGP 3.3v, 1.5V, and 0.8V signaling. Available speeds 1x, 2x at 3.3V and 1x, 2x, 4x at 1.5V and 4x, 8x at 0.8V.
*Different slots connectors have different position of key
AGP接口引脚定义
3.3 Volt Boards
Universal Boards
1.5 Volt Boards
Pin #
Side A
Side B
Side A
Side B
Side A
Side B
1
+12V
OVRCNT#
+12V
OVRCNT#
+12V
OVRCNT#
2
TYPEDET#
+5.0V
TYPEDET#
+5.0V
TYPEDET#
+5.0V
3
Reserved
5.0V
Reserved
5.0V
Reserved
5.0V
4
USB-
USB+
USB-
USB+
USB-
USB+
5
Ground
Ground
Ground
Ground
Ground
Ground
6
INTA#
INTB#
INTA#
INTB#
INTA#
INTB#
7
RST#
CLK
RST#
CLK
RST#
CLK
8
GNT#
REQ#
GNT#
REQ#
GNT#
REQ#
9
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
10
ST1
ST0
ST1
ST0
ST1
ST0
11
Reserved
ST2
Reserved
ST2
Reserved
ST2
12
PIPE#
RBF#
PIPE#
RBF#
PIPE#
RBF#
13
Ground
Ground
Ground
Ground
Ground
Ground
14
Reserved
Reserved
WBF#
Reserved
WBF#
Reserved
15
SBA1
SBA0
SBA1
SBA0
SBA1
SBA0
16
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
17
SBA3
SBA2
SBA3
SBA2
SBA3
SBA2
18
Reserved
SB_STB
SB_STB#
SB_STB
SB_STB#
SB_STB
19
Ground
Ground
Ground
Ground
Ground
Ground
20
SBA5
SBA4
SBA5
SBA4
SBA5
SBA4
21
SBA7
SBA6
SBA7
SBA6
SBA7
SBA6
22
Key
Key
Reserved
Reserved
Reserved
Reserved
23
Key
Key
GROUND
GROUND
GROUND
GROUND
24
Key
Key
Reserved
3.3Vaux
Reserved
3.3Vaux
25
Key
Key
Vcc 3.3
Vcc 3.3
Vcc 3.3
Vcc 3.3
26
AD30
AD31
AD30
AD31
AD30
AD31
27
AD28
AD29
AD28
AD29
AD28
AD29
28
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
29
AD26
AD27
AD26
AD27
AD26
AD27
30
AD24
AD25
AD24
AD25
AD24
AD25
31
Ground
Ground
Ground
Ground
Ground
Ground
32
Reserved
AD STB1
AD STB1#
AD STB1
AD STB1#
AD STB1
33
C/BE3#
AD23
C/BE3#
AD23
C/BE3#
AD23
34
Vddq 3.3
Vddq 3.3
Vddq
Vddq
Vddq 1.5
Vddq 1.5
35
AD22
AD21
AD22
AD21
AD22
AD21
36
AD20
AD19
AD20
AD19
AD20
AD19
37
Ground
Ground
Ground
Ground
Ground
Ground
38
AD18
AD17
AD18
AD17
AD18
AD17
39
AD16
C/BE2#
AD16
C/BE2#
AD16
C/BE2#
40
Vddq 3.3
Vddq 3.3
Vddq
Vddq
Vddq 1.5
Vddq 1.5
41
FRAME#
IRDY#
FRAME#
IRDY#
FRAME#
IRDY#
42
Reserved
3.3Vaux
Reserved
3.3Vaux
KEY
KEY
43
Ground
Ground
Ground
Ground
KEY
KEY
44
Reserved
Reserved
Reserved
Reserved
KEY
KEY
45
VCC 3.3
VCC 3.3
VCC 3.3
VCC 3.3
KEY
KEY
46
TRDY#
DEVSEL#
TRDY#
DEVSEL#
TRDY#
DEVSEL#
47
STOP#
Vddq 3.3
STOP#
Vddq
STOP#
Vddq 1.5
48
PME#
PERR#
PME#
PERR#
PME#
PERR#
49
Ground
Ground
Ground
Ground
Ground
Ground
50
PAR
SERR#
PAR
SERR#
PAR
SERR#
51
AD15
C/BE1#
AD15
C/BE1#
AD15
C/BE1#
52
Vddq 3.3
Vddq 3.3
Vddq
Vddq
Vddq 1.5
Vddq 1.5
53
AD13
AD14
AD13
AD14
AD13
AD14
54
AD11
AD12
AD11
AD12
AD11
AD12
55
Ground
Ground
Ground
Ground
Ground
Ground
56
AD9
AD10
AD9
AD10
AD9
AD10
57
C/BE0#
AD8
C/BE0#
AD8
C/BE0#
AD8
58
Vddq 3.3
Vddq 3.3
Vddq
Vddq
Vddq 1.5
Vddq 1.5
59
Reserved
AD STB0
Reserved
AD STB0#
Reserved
AD STB0#
60
AD6
AD7
AD6
AD7
AD6
AD7
61
Ground
Ground
Ground
Ground
Ground
Ground
A62
AD4
AD5
AD4
AD5
AD4
AD5
63
AD2
AD3
AD2
AD3
AD2
AD3
64
Vddq 3.3
Vddq 3.3
Vddq
Vddq
Vddq 1.5
Vddq 1.5
65
AD0
AD1
AD0
AD1
AD0
AD1
66
Reserved
Reserved
Vrefcg
Vrefcg
Vrefcg
Vrefcg
