ICS9LPRS464 데이터 시트보기 (PDF) - Integrated Device Technology

부품명

상세내역

제조사

ICS9LPRS464

System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs

Integrated Device Technology 

ICS9LPRS464

System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUss

SMBus Table: ATIG PLL Spread Spectrum Control Register

Byte 18 Pin #

Name

Control Function

Bit 7

Reserved

Bit 6

-

SSP14

Bit 5

-

SSP13

Bit 4

-

Bit 3

-

Bit 2

-

SSP12

SSP11

SSP10

Spread Spectrum Programming

b(14:8)

Bit 1

-

SSP9

Bit 0

-

SSP8

Type

RW

RW

RW

RW

RW

RW

RW

SMBus Table: CPU and ATIG Divider Ratio Programming Bits Select Register

Byte 19 Pin #

Name

Control Function

Bit 7

-

CPU_Div3

Bit 6

-

Bit 5

-

CPU_Div2

CPU_Div1

CPU_Divider Ratio

Programming Bits

Bit 4

-

CPU_Div0

Bit 3

-

ATIG_Div3

Bit 2

-

Bit 1

-

ATIG_Div2

ATIG_Div1

ATIG_Divider Ratio

Programming Bits

Bit 0

-

ATIG_Div0

Type

RW

RW

RW

RW

RW

RW

RW

RW

SMBus Table: HTT Divider Ratio Programming Bits Select Register

Byte 20 Pin #

Name

Control Function

Bit 7

Reserved

Bit 6

Reserved

Bit 5

Reserved

Bit 4

Reserved

Bit 3

-

HTT_Div3

Bit 2

-

Bit 1

-

HTT_Div2

HTT_Div1

HTT_Divider Ratio

Programming Bits

Bit 0

-

HTT_Div0

Type

RW

RW

RW

RW

0

1

PWD

0

X

These Spread Spectrum bits X

in Byte 19 and 20 will program X

the spread pecentage. It is

recommended to use ICS

X

Spread % table for spread X

programming.

X

X

0

1

See Table 4:

CPU Divider Ratios

See Table 5:

ATIG Divider Ratios

PWD

X

X

X

X

X

X

X

X

0

1

See Table 6:

HTT Divider Ratios

PWD

0

0

0

0

X

X

X

X

IDTTM/ICSTM System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs

19

1377A—04/07/08

Share Link: