ICS951464 datasheet(11/24 Pages) IDT

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IDTTM/ICSTM

Programmable System Clock Chip for ATI RS/RD690 K8TM - based Systems

1211B—09/17/09

ICS951464

IDTTM/ICSTM Programmable System Clock Chip for ATI RS/RD690 K8

TM - based Systems

SMBus Table: CLKREQA# and CLKREQC# Output Control Register

Byte 4

Pin #

Name

Control Function

Type

PWD

Bit 7

12,13

REQASRC7

CLKREQA# Controls SRC7

Does not

control

Controls

Bit 6

16,17

REQASRC6

CLKREQA# Controls SRC6

Does not

control

Controls

Bit 5

18,19

REQASRC5

CLKREQA# Controls SRC5

Does not

control

Controls

Bit 4

Bit 3

Bit 2

31,30

REQCATIG1

CLKREQC# Controls ATIG1

Does not

control

Controls

Bit 1

35,34

REQCATIG0

CLKREQC# Controls ATIG0

Does not

control

Controls

Bit 0

39,38

REQCSRC0

CLKREQC# Controls SRC0

Does not

control

Controls

SMBus Table: CPU Stop Control and SRC Frequency Select Register

Byte 5

Pin #

Name

Control Function

Type

PWD

Bit 7

Bit 6

Bit 5

Bit 4

SRC,

ATIG

Differential Output Disable

Mode

Hi-Z or Driven when disable

Driven

Hi-Z

Bit 3

SRC FS3

SRC Freq Select Bit 3

Bit 2

SRC FS2

SRC Freq Select Bit 2

Bit 1

SRC FS1

SRC Freq Select Bit 1

Bit 0

SRC FS0

SRC Freq Select Bit 0

SMBus Table: Device ID Register

Byte 6

Pin #

Name

Control Function

Type

PWD

Bit 7

Device ID7 (MSB)

Bit 6

Device ID6

Bit 5

Device ID5

Bit 4

Device ID4

Bit 3

Device ID3

Bit 2

Device ID2

Bit 1

Device ID1

Bit 0

Device ID0 (LSB)

SMBus Table: Revision and Vendor ID Register

Byte 7

Pin #

Name

Control Function

Type

PWD

Bit 7

-RID3

Bit 6

-RID2

Bit 5

-RID1

Bit 4

-RID0

Bit 3

-VID3

Bit 2

-VID2

Bit 1

-VID1

Bit 0

-VID0

Reserved

See Table 2:

SRC Frequency Selection

Table

DEVICE ID

REVISION ID

Reserved

VENDOR ID

Reserved

ICS951464 Datasheet(PDF) 11 Page - Integrated Device Technology

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