IDTCV144 データシートの表示（PDF） - Integrated Device Technology

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IDTCV144

PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR

Integrated Device Technology 

IDTCV144

PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR

COMMERCIAL TEMPERATURE RANGE

BYTE 9, LVDS CONTROL BYTE

Bit

Output(s) Affected

Description/Function

0

1

Type

0

LVDS

HW/ SMBus control

HW(1)

SW

RW

1

LVDS SSC EN

Spread spectrum enable

Off

On

RW

2

Reserved

RW

3

SEL 100/96#

Select LVDS frequency

96MHz

100MHZ

RW

4

S3

see SSC table

RW

5

S2

see SSC table

RW

6

S1

see SSC table

RW

7

S0

see SSC table

RW

NOTE:

1. If bit 0 is set to 0, LVDS output frequency is selected by HW SEL 100/96#. If bit 0 is set to 1, LVDS output frequency is selected by bit 3.

Power On

0

1

0

SEL 100/96#

0

1

1

1

BYTE 10

Bit

0

1

2

3

4

5

6

7

Output(s) Affected

Reserved

Reserved

Reserved

Description / Function

N Programming enable

LVDS PLL power down

USB PLL power down

SRC PLL power down

CPU PLL power down

0

Disable

Normal

Normal

Normal

Normal

1

Enable

Power Down

Power Down

Power Down

PowerDown

Type

Power On

RW

0

RW

0

RW

0

RW

0

RW

0

RW

0

RW

0

RW

0

BYTE 11

Bit

Output(s) Affected

Description / Function

0

0

SRC SMC0

SRC/PCI SSC control

1

SRC SMC1

2

SRC SMC2

see SMC table

3

Reserved

4

CPU SMC0

CPU PLL SSC control

5

CPU SMC1

see SMC table

6

CPU SMC2

7

Reserved

BYTE 12

Bit

Output(s) Affected

Description / Function

0

0

CPU_N0, LSB

CPU CLK = N* Resolution

1

CPU_N1

see Resolution table

2

CPU_N2

3

CPU_N3

4

CPU_N4

5

CPU_N5

6

CPU_N6

7

CPU_N7, MSB

9

1

Type

Power On

RW

1

RW

0

RW

0

RW

0

RW

1

RW

0

RW

0

RW

0

1

Type

Power On

RW

0

RW

1

RW

1

RW

0

RW

1

RW

0

RW

0

RW

1

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