AGP总线定义

AGP 是 Accelerated Graphics Port，是 Intel 推出的一种 3D 图形标准接口，它能够提供四倍于 PCI 的效率，AGP2X 的传输速率达到 533MB。有关 AGP 的说明可以在 Intel 的网站上找到。 引脚定义

Pin B面 A面

1 Spare 12V

2 5.0V Spare

3 5.0V Reserved

4 USB+ USB-

5 Ground Ground

6 INTB# INTA#

7 Clock RST#

8 REQ# GNT#

9 Vcc3.3V Vcc3.3V

10 ST0 ST1

11 ST2 Reserved

12 RBF# PIPE#

13 Ground Ground

14 Spare Spare

15 SBA0 SBA1

16 Vcc3.3V Vcc3.3V

17 SBA2 SBA3

18 SB_STB Reserved

19 Ground Ground

20 SBA4 SBA5

21 SBA6 SBA7

22 Key Key

23 Key Key

24 Key Key

25 Key Key

26 Address31 Address30

27 Address29 Address28

28 Vcc3.3V Vcc3.3V

29 Address27 Address26

30 Address25 Address24

31 Ground Ground

32 AD_STB1 Reserved

33 Address23 C/BE3#

34 Vddq3.3 Vddq3.3

35 Address21 Address22

36 Address19 Address20

37 Ground Ground

38 Address17 Address18

39 C/BE2# Address16

40 Vddq3.3 Vddq3.3

41 IRDY# FRAME#

42

43 Ground Ground

44

45 Vcc3.3V Vcc3.3V

46 DEVSEL# TRDY#

47 Vddq3.3 STOP#

48 Perr# Spare

49 Ground Ground

50 SERR# PAR

51 C/BE1# Address15

52 Vddq3.3 Vddq3.3

53 Address14 Address13

54 Address12 Address11

55 Ground Ground

56 Address10 Address9

57 Address8 C/BE0#

58 Vddq3.3 Vddq3.3

59 AD_STB0 Reserved

60 Address7 Address6

61 Ground Ground

62 Address5 Address4

63 Address3 Address2

64 Vddq3.3 Vddq3.3

65 Address1 Address0

66 SMB0 SMB1

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