ics932s421 Integrated Device Technology, ics932s421 Datasheet - Page 16

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ics932s421

Manufacturer Part Number

ics932s421

Description

Pcie Gen 2 & Fbd Compliant Ck410b Ck410b+ Clock For Intel-based Servers

Manufacturer

Integrated Device Technology

Datasheet

1.ICS932S421.pdf (23 pages)

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Current page: 16 of 23
Download datasheet (254Kb)

1340B—06/13/07

SMBus Table: SRC Frequency Control Register

SMBus Table: SRC Frequency Control Register

SMBus Table: SRC Spread Spectrum Control Register

SMBus Table: SRC Spread Spectrum Control Register

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Byte 15

Byte 16

Byte 17

Byte 18

Integrated

Circuit

Systems, Inc.

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Pin #

Pin #

Pin #

Pin #

SRC M Div5

SRC M Div4

SRC M Div3

SRC M Div2

SRC M Div1

SRC M Div0

SRC N Div8

SRC N Div9

SRC N Div7

SRC N Div6

SRC N Div5

SRC N Div4

SRC N Div3

SRC N Div2

SRC N Div1

SRC N Div0

SRC SSP14

SRC SSP13

SRC SSP12

SRC SSP11

SRC SSP10

SRC SSP7

SRC SSP6

SRC SSP5

SRC SSP4

SRC SSP3

SRC SSP2

SRC SSP1

SRC SSP0

SRC SSP9

SRC SSP8

Reserved

Name

Name

Name

Name

M Divider Programming

N Divider Programming

Programming b(14:8)

Programming b(7:0)

N Divider Prog bit 8

N Divider Prog bit 9

Control Function

Control Function

Control Function

Control Function

Spread Spectrum

Spread Spectrum

16

Reserved

b(7:0)

bits

Type

Type

Type

Type

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

RW

R

M and N Divider in Byte 15 and

M and N Divider in Byte 15 and

These Spread Spectrum bits in

These Spread Spectrum bits in

16 will configure the SRC VCO

16 will configure the SRC VCO

The decimal representation of

The decimal representation of

the spread pecentage of SRC

the spread pecentage of SRC

frequency. Default at power

frequency. Default at power

Byte 17 and 18 will program

Byte 17 and 18 will program

up = latch-in or Byte 0 Rom

up = latch-in or Byte 0 Rom

table. VCO Frequency =

table. VCO Frequency =

14.318 x [NDiv(9:0)+8] /

14.318 x [NDiv(9:0)+8] /

0

0

0

0

-

[MDiv(5:0)+2]

[MDiv(5:0)+2]

ICS932S421B

1

1

1

1

-

PWD

PWD

PWD

PWD

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

0

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