ICS9148-58 데이터 시트보기 (PDF) - Integrated Circuit Systems

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ICS9148-58

Frequency Generator & Integrated Buffers for PENTIUM/Pro™

Integrated Circuit Systems 

ICS9148 - 58

Byte 1: CPU, Active/Inactive Register

(1 = enable, 0 = disable)

Bit

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Pin #

-

-

-

-

40

41

43

44

PWD

1

1

1

1

1

1

1

1

Description

(Reserved)

(Reserved)

(Reserved)

(Reserved)

CPUCLK3 (Act/Inact)

CPUCLK2 (Act/Inact)

CPUCLK1 (Act/Inact)

CPUCLK0 (Act/Inact)

Notes:

1. Inactive means outputs are held LOW and are disabled

from switching.

Byte 2: PCI Active/Inactive Register

(1 = enable, 0 = disable)

Bit

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Pin #

-

7

15

14

12

11

10

8

PWD

1

1

1

1

1

1

1

1

Description

(Reserved)

PCICLK_F (Act/Inact)

AGP0 (Act/Inact)

PCICLK4 (Act/Inact)

PCICLK3 (Act/Inact)

PCICLK2 (Act/Inact)

PCICLK1 (Act/Inact)

PCICLK0(Act/Inact)

Notes:

1. Inactive means outputs are held LOW and are disabled

from switching.

Byte 3: SDRAM Active/Inactive Register

(1 = enable, 0 = disable)

Bit

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Pin #

28

29

31

32

34

35

37

38

PWD

1

1

1

1

1

1

1

1

Description

SDRAM7 (Act/Inact)

SDRAM6 (Act/Inact)

SDRAM5 (Act/Inact)

SDRAM4 (Act/Inact)

SDRAM3 (Act/Inact)

SDRAM2 (Act/Inact)

SDRAM1 (Act/Inact)

SDRAM0 (Act/Inact)

Notes:

1. Inactive means outputs are held LOW and are disabled

from switching.

Byte 5: Peripheral Active/Inactive Register

(1 = enable, 0 = disable)

Bit

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Pin #

-

-

-

47

-

-

46

2

PWD

1

1

1

1

1

1

1

1

Description

(Reserved)

(Reserved)

(Reserved)

AGP1(Act/Inact)

(Reserved)

(Reserved)

REF1 (Act/Inact)

REF0 (Act/Inact)

Notes:

1. Inactive means outputs are held LOW and are disabled

from switching.

Byte 4: SDRAM Active/Inactive Register

(1 = enable, 0 = disable)

Bit

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Pin #

-

-

-

-

17

18

20

21

PWD

1

1

1

1

1

1

1

1

Description

(Reserved)

(Reserved)

(Reserved)

(Reserved)

SDRAM11 (Act/Inact)

(Desktop Mode Only)

SDRAM10 (Act/Inact)

(Desktop Mode Only)

SDRAM9 (Act/Inact)

SDRAM8 (Act/Inact)

Notes:

1. Inactive means outputs are held LOW and are disabled

from switching.

5

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