ICS932S801 datasheet(14/21 Pages) RENESAS

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ICS932S801

0959C—03/13/06

SMBus Table: CPU Frequency Control Register

Pin #

Name

Control Function

Type0

PWD

Bit 7

N Div8

N Divider Prog bit 8

Bit 6

N Div9

N Divider Prog bit 9

Bit 5

M Div5

Bit 4

M Div4

Bit 3

M Div3

Bit 2

M Div2

Bit 1

M Div1

Bit 0

M Div0

SMBus Table: CPU Frequency Control Register

Pin #

Name

Control Function

Type0

PWD

Bit 7

N Div7

Bit 6

N Div6

Bit 5

N Div5

Bit 4

N Div4

Bit 3

N Div3

Bit 2

N Div2

Bit 1

N Div1

Bit 0

N Div0

SMBus Table: CPU Spread Spectrum Control Register

Pin #

Name

Control Function

Type0

PWD

Bit 7

SSP7

Bit 6

SSP6

Bit 5

SSP5

Bit 4

SSP4

Bit 3

SSP3

Bit 2

SSP2

Bit 1

SSP1

Bit 0

SSP0

SMBus Table: CPU Spread Spectrum Control Register

Pin #

Name

Control Function

Type0

PWD

Bit 7

Reserved

Bit 6

SSP14

Bit 5

SSP13

Bit 4

SSP12

Bit 3

SSP11

Bit 2

SSP10

Bit 1

SSP9

Bit 0

SSP8

Spread Spectrum

Programming bit(7:0)

Byte 11

M Divider Programming

bit (5:0)

N Divider Programming

Byte12 bit(7:0) and

Byte11 bit(7:6)

Spread Spectrum

Programming bit(14:8)

Byte 14

Byte 13

Byte 12

These Spread Spectrum

bits in Byte 13 and 14 will

program the spread

pecentage of CPU

These Spread Spectrum

bits in Byte 13 and 14 will

program the spread

pecentage of CPU

The decimal representation

of M and N Divier in Byte

11 and 12 will configure

the CPU VCO frequency.

Default at power up = latch-

in or Byte 0 Rom table.

VCO Frequency = 14.318

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

[MDiv(5:0)+2]

The decimal representation

of M and N Divier in Byte

11 and 12 will configure

the CPU VCO frequency.

Default at power up = latch-

in or Byte 0 Rom table.

VCO Frequency = 14.318

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

[MDiv(5:0)+2]

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