952906BFLFT Datasheet 952906BFLF, 952906AFLFT, 952906BFLFT | P7-P9

Integrated

Circuit

Systems, Inc.

ICS952906A

1236A—08/06/07

Table1: QuadRom Frequency Selection Table (Continued)

Bit4 Bit3 Bit2 Bit1 Bit0 CPU AGP PCI Spread

FS4FS3FS2FS1FS0 MHz MHz MHz %

1 0 0 0 0 0 0 95.00 63.33 31.66 No Spread

1 0 0 0 0 0 1 190.00 63.33 31.66 No Spread

1 0 0 0 0 1 0 126.66 63.33 31.66 No Spread

1 0 0 0 0 1 1 158.34 63.33 31.66 No Spread

1 0 0 0 1 0 0 211.11 63.33 31.66 No Spread

1 0 0 0 1 0 1 380.00 63.33 31.66 No Spread

1 0 0 0 1 1 0 253.34 63.33 31.66 No Spread

1000111

316.66 63.33 31.66 No Spread

1 0 0 1 0 0 0 90.00 59.99 30.00 No Spread

1 0 0 1 0 0 1 180.00 59.99 30.00 No Spread

1 0 0 1 0 1 0 120.00 59.99 30.00 No Spread

1 0 0 1 0 1 1 150.00 59.99 30.00 No Spread

1 0 0 1 1 0 0 200.00 59.99 30.00 No Spread

1 0 0 1 1 0 1 360.00 59.99 30.00 No Spread

1 0 0 1 1 1 0 240.00 59.99 30.00 No Spread

1001111

300.00 59.99 30.00 No Spread

1 0 1 0 0 0 0 85.00 56.66 28.33 No Spread

1 0 1 0 0 0 1 170.00 56.66 28.33 No Spread

1 0 1 0 0 1 0 113.33 56.66 28.33 No Spread

1 0 1 0 0 1 1 141.67 56.66 28.33 No Spread

1 0 1 0 1 0 0 188.89 56.66 28.33 No Spread

1 0 1 0 1 0 1 340.00 56.66 28.33 No Spread

1 0 1 0 1 1 0 226.67 56.66 28.33 No Spread

1010111

283.33 56.66 28.33 No Spread

1 0 1 1 0 0 0 80.00 53.33 26.66 No Spread

1 0 1 1 0 0 1 160.00 53.33 26.66 No Spread

1 0 1 1 0 1 0 106.66 53.33 26.66 No Spread

1 0 1 1 0 1 1 133.34 53.33 26.66 No Spread

1 0 1 1 1 0 0 177.78 53.33 26.66 No Spread

1 0 1 1 1 0 1 320.00 53.33 26.66 No Spread

1 0 1 1 1 1 0 213.34 53.33 26.66 No Spread

1011111

266.66 53.33 26.66 No Spread

Bit6 Bit5

Integrated

Circuit

Systems, Inc.

ICS952906A

1236A—08/06/07

Table1: QuadRom Frequency Selection Table (Continued)

Bit4 Bit3 Bit2 Bit1 Bit0 CPU AGP PCI Spread

FS4FS3FS2FS1FS0 MHz MHz MHz %

1 1 0 0 0 0 0 115.00 76.66 38.33 No Spread

1 1 0 0 0 0 1 230.00 76.66 38.33 No Spread

1 1 0 0 0 1 0 153.33 76.66 38.33 No Spread

1 1 0 0 0 1 1 191.67 76.66 38.33 No Spread

1 1 0 0 1 0 0 255.55 76.66 38.33 No Spread

1 1 0 0 1 0 1 460.00 76.66 38.33 No Spread

1 1 0 0 1 1 0 306.67 76.66 38.33 No Spread

1100111

383.33 76.66 38.33 No Spread

1 1 0 1 0 0 0 115.00 79.99 40.00 No Spread

1 1 0 1 0 0 1 230.00 79.99 40.00 No Spread

1 1 0 1 0 1 0 153.33 79.99 40.00 No Spread

1 1 0 1 0 1 1 191.67 79.99 40.00 No Spread

1 1 0 1 1 0 0 255.55 79.99 40.00 No Spread

1 1 0 1 1 0 1 460.00 79.99 40.00 No Spread

1 1 0 1 1 1 0 306.67 79.99 40.00 No Spread

1101111

383.33 79.99 40.00 No Spread

1 1 1 0 0 0 0 78.00 51.99 26.00 No Spread

1 1 1 0 0 0 1 156.00 51.99 26.00 No Spread

1 1 1 0 0 1 0 104.00 51.99 26.00 No Spread

1 1 1 0 0 1 1 130.00 51.99 26.00 No Spread

1 1 1 0 1 0 0 173.33 51.99 26.00 No Spread

1 1 1 0 1 0 1 312.00 51.99 26.00 No Spread

1 1 1 0 1 1 0 208.00 51.99 26.00 No Spread

1110111

260.00 51.99 26.00 No Spread

1 1 1 1 0 0 0 75.00 50.00 25.00 No Spread

1 1 1 1 0 0 1 150.00 50.00 25.00 No Spread

1 1 1 1 0 1 0 100.00 50.00 25.00 No Spread

1 1 1 1 0 1 1 125.00 50.00 25.00 No Spread

1 1 1 1 1 0 0 166.67 50.00 25.00 No Spread

1 1 1 1 1 0 1 300.00 50.00 25.00 No Spread

1 1 1 1 1 1 0 200.00 50.00 25.00 No Spread

1111111

250.00 50.00 25.00 No Spread

Bit6 Bit5

Integrated

Circuit

Systems, Inc.

ICS952906A

1236A—08/06/07

C Table: Frequency Select Register

Control

Function

Bit 7

FS Source

Frequency H/W IIC

Select

RW 0

Bit 6

FS6 Freq Select Bit 6 RW 0

Bit 5

FS5 Freq Select Bit 5 RW 0

Bit 4

FS4 Freq Select Bit 4 RW 0

Bit 3

FS3 Freq Select Bit 3 RW 0

Bit 2

FS2 Freq Select Bit 2 RW 0

Bit 1

FS1 Freq Select Bit 1 RW 0

Bit 0

FS0 Freq Select Bit 0 RW 0

C Table: Spreading and Device Behavior Control Register

Control

Function

Bit 7

SS1 Spread Select 1** RW 0

Bit 6

SS0 Spread Select 0** RW 1

Bit 5

SS_EN Spread Enable Control RW 1

Bit 4

WDS_EN WD Soft Reset Enable RW 0

Bit 3

Reserved Reserved RW 1

Bit 2

CPUCLKT/C_ITP,

CPU1T/C, CPU0T/C

Output Control RW 1

Bit 1

CPUCLKT/C_1 Output Control RW 1

Bit 0

CPUCLKT/C_0 Output Control RW 1

C Table: Output Control Register

Control

Function

Bit 7

25MHz_0 Output Control RW 1

Bit 6

25MHz_1 Output Control RW 1

Bit 5

CPUT Stop Mode

0: CPUT Driven during

PD#; 1: Tri-stated

RW 0

Bit 4

Reserved Reserved RW 1

Bit 3

3V66_1 Output Control RW 1

Bit 2

Reserved Reserved RW 1

Bit 1

CPUCLKT/C_1 Output Stop Control RW 1

Bit 0

CPUCLKT/C_0 Output Stop Control RW 1

C Table: Output Control Register

Control

Function

Bit 7

ASEL1 3V66/PCI Freq Select RW 0

Bit 6

PCICLK6 Output Control RW 1

Bit 5

PCICLK5 Output Control RW 1

Bit 4

PCICLK4 Output Control RW 1

Bit 3

PCICLK3 Output Control RW 1

Bit 2

PCICLK2 Output Control RW 1

Bit 1

PCICLK1 Output Control RW 1

Bit 0

PCICLK0 Output Control RW 1

Disable Enable

See Table 5: Async AGP/PCI Freq Table

Disable Enable

Free Run Stoppable

Disable Enable

Free Run Stoppable

Disable Enable

Driven Hi-Z

Disable Enable

Disable

Enable

ON OFF

01 = 0.25% Reserved

PWD

Byte 3 Pin # Name Type 0 1

42,41

39, 38

Type PWD

39, 38

Byte 2 Pin # Name 0 1

** Spread programming only applies for ROM table entries 0001000 to 0001011 and 0010000 to 0010111

45, 44

42,41

ON OFF-

PWD

Byte 1 Pin # Name Type

00 = 0.20% 10 = 0.35%

See Table 1: QuadRom Frequency

Selection Table

PWD

Byte 0 Pin # Name Type

Latch Inputs IIC

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P23

952906BFLFT

Mfr. #:

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Description:

Clock Generators & Support Products PC MAIN CLOCK

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952906BFLFT

952906BFLFT

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