【图】AGP接口定义_IC博客-IC邮购网

【图】AGP接口定义

(2023/7/23 17:59:00)

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