N386SX Просмотр технического описания (PDF) - Intel

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N386SX

Intel387™ SX MATH COPROCESSOR

Intel 

Intel387TM SX MATH COPROCESSOR

1 0 PIN ASSIGNMENT

The Intel387 SX Math CoProcessor pinout as

viewed from the top side of the component is shown

in Figure 1-1 VCC and VSS (GND) connections must

be made to multiple pins The circuit board should

include VCC and VSS planes for power distribution

and all VCC and VSS pins must be connected to the

appropriate plane

NOTE

Pins identified as N C should remain completely

unconnected

Figure 1-1 Intel387TM SX Math CoProcessor Pinout

240225 – 1

Table 1-1 Pin Cross Reference Functional Grouping

BUSY

PEREQ

36

D00

19

VCC

56

D01

20

4

VSS

5

NC

1

9

14

10

ERROR

35

D02

23

13

21

17

ADS

47

D03

8

22

25

18

CMD0

48

D04

7

26

27

52

NPS1

44

D05

6

31

32

65

NPS2

45

D06

3

33

34

67

STEN

40

D07

2

37

38

68

WR

41

D08

24

39

42

D09

28

43

55

READY

49

D10

29

46

60

READYO

57

D11

30

50

61

D12

16

58

63

CKM

59

D13

15

62

66

CPUCLK2

54

D14

12

64

NUMCLK2

53

D15

11

RESETIN

51

5

5

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