IDTTM Frequency Generator with 200MHz Differential CPU Clocks

0542

K—03/23/16

ICS950812

Frequency Generator with 200MHz Differential CPU Clocks

21

Pin #

Name

0

1

PWD

Bit 7

RW

-

-

0

Bit 6

RW

-

-

0

Bit 5

RW

-

-

0

Bit 4

RW

-

-

0

Bit 3

RW

-

-

0

Bit 2

RW

-

-

0

Bit 1

RW

-

-

0

Bit 0

RW

-

-

0

Bit Control

00 (default), 11 = Medium

01 = Low, 10 =High

00 (default), 11 = Medium

10 = Low, 01 =High

00 (default), 11 = Medium

10 = Low, 01 =High

00 = High(default), 01 = Low,

11,10 = Medium

VCHCLK Slew Control

Type

BYTE

9

Affected Pin

Control Function

35

7, 6, 5

PCICLK_F (2:0) Slew Contol

13, 12,

11, 10

PCICLK (3:0) Slew Contol

18, 17, 16,

13, 12, 11, 10

PCICLK (6:0) Slew Contol

Pin #

Name

0

1

PWD

Bit 7

X

-

M/N Enable (Enable access to

Byte 11 - 14)

RW

HW/B0

Byte

(11-14)

0

Bit 6

X

-

Unused

-

-

-

0

Bit 5

RW

-

-

0

Bit 4

RW

-

-

0

Bit 3

RW

-

-

0

Bit 2

RW

-

-

0

Bit 1

X

-

Unused

-

-

-

0

Bit 0

X

-

Unused

-

-

-

0

Bit Control

Control Function

Type

BYTE

10

Affected Pin

24, 23,

22, 21

3V66(5:2)/66MHZ_OUT(2:0)

Skew

Approx 250ps per bit (Ref to PCI)

33, 35

3V66(1:0) Skew

Approx 250ps per bit (Ref to PCI)

Pin #

Name

0

1

PWD

Bit 7

X

-

VCO Divider Bit8

RW

-

-

X

Bit 6

X

-

REF Divider Bit6

RW

-

-

X

Bit 5

X

-

REF Divider Bit5

RW

-

-

X

Bit 4

X

-

REF Divider Bit4

RW

-

-

X

Bit 3

X

-

REF Divider Bit3

RW

-

-

X

Bit 2

X

-

REF Divider Bit2

RW

-

-

X

Bit 1

X

-

REF Divider Bit1

RW

-

-

X

Bit 0

X

-

REF Divider Bit0

RW

-

-

X

Note: The decimal representation of these 7 bits (Byte 11 bit[6:0]) + 2 is equal to the REF divider value.

BYTE

11

Affected Pin

Control Function

Type

Bit Control

Pin #

Name

0

1

PWD

Bit 7

X

-

VCO Divider Bit7

RW

-

-

X

Bit 6

X

-

VCO Divider Bit6

RW

-

-

X

Bit 5

X

-

VCO Divider Bit5

RW

-

-

X

Bit 4

X

-

VCO Divider Bit4

RW

-

-

X

Bit 3

X

-

VCO Divider Bit3

RW

-

-

X

Bit 2

X

-

VCO Divider Bit2

RW

-

-

X

Bit 1

X

-

VCO Divider Bit1

RW

-

-

X

Bit 0

X

-

VCO Divider Bit0

RW

-

-

X

Note: The decimal representation of these 9 bits (Byte 12 bit[7:0]) and Byte 11 bit [7]) + 8 is equal to the VCO divider value.

Bit Control

BYTE

12

Affected Pin

Control Function

Type