12

Integrated

Circuit

Systems, Inc.

ICS9LPRS535

Datasheet

1461A—07/28/09

Byte 4 Output Enable and Spread Spectrum Disable Register

Bit

Pin

Name

Description

Type

0

1

Default

7

SRC3_OE

Output enable for SRC3

RW

Output Disabled

Output Enabled

1

6

SATA/SRC2_OE

Output enable for SATA/SRC2

RW

Output Disabled

Output Enabled

1

5

Reserved

Reserved

RW

0

4

SRC0/DOT96_OE

Output enable for SRC0/DOT96

RW

Output Disabled

Output Enabled

1

3

CPU1_OE

Output enable for CPU1

RW

Output Disabled

Output Enabled

1

2

CPU0_OE

Output enable for CPU0

RW

Output Disabled

Output Enabled

1

1

PLL1_SSC_ON

Enable PLL1's spread modulation

RW

Spread Disabled

Spread Enabled

1

0

Reserved

Reserved

RW

0

Byte 5 Clock Request Enable/Configuration Register

Bit

Pin

Name

Description

Type

0

1

Default

7

CR#_A_EN

Enable CR#_A (clk req),

PCI0_OE must be = 1 for this bit to take effect

RW

Disable CR#_A

Enable CR#_A

0

6

CR#_A_SEL

Sets CR#_A to control either SRC0 or SRC2

RW

CR#_A -> SRC0

CR#_A -> SRC2

0

5

Reserved

Reserved

RW

0

4

Reserved

Reserved

RW

0

3

CR#_C_EN

Enable CR#_C (clk req)

RW

Disable CR#_C

Enable CR#_C

0

2

CR#_C_SEL

Sets CR#_C -> SRC0 or SRC2

RW

CR#_C -> SRC0

CR#_C -> SRC2

0

1

CR#_D_EN

Enable CR#_D (clk req)

RW

Disable CR#_D

Enable CR#_D

0

0

CR#_D_SEL

Sets CR#_D -> SRC1 or SRC4

RW

NA, SRC1 not

present

CR#_D -> SRC4

0

Byte 6 Clock Request Enable/Configuration and Stop Control Register

Bit

Pin

Name

Description

Type

0

1

Default

7

Reserved

Reserved

RW

0

6

CR#_F_EN

Enable CR#_F (clk req) -> SRC8

RW

Disable CR#_F

Enable CR#_F

0

5

Reserved

Reserved

RW

0

4

Reserved

Reserved

RW

0

3

Reserved

Reserved

RW

0

2

Reserved

Reserved

RW

0

1

Reserved

Reserved

RW

0

0

SRC_STP_CRTL

If set, SRCs (except SRC1) stop with PCI_STOP#

RW

Free Running

Stops with

PCI_STOP#

assertion

0

Byte 7 Vendor ID/ Revision ID

Bit

Pin

Name

Description

Type

0

1

Default

7

Rev Code Bit 3

R

X

6

Rev Code Bit 2

R

X

5

Rev Code Bit 1

R

X

4

Rev Code Bit 0

R

X

3

Vendor ID bit 3

R

0

2

Vendor ID bit 2

R

0

1

Vendor ID bit 1

R

0

0

Vendor ID bit 0

R

1

Revision ID

Rev B = 0001

Rev C = 0010

Vendor ID

ICS is 0001, binary

ICS is 0001

B rev = 0001

C rev = 0010