954226 Datasheet, PDF (9/22 Pages) Integrated Device Technology – Programmable Timing Control HubTM for Mobile P4TM Systems

954226
Programmable Timing Control Hub^TM for Mobile P4^TM Systems
SMBus Table: Output Control Register
Byte 0
Pin #
Name
Bit 7
-
CPUCLK2_ITP/PCIEX6
Enable
Bit 6
-
PCIEX5 Enable
Bit 5
-
PCIEX4 Enable
Bit 4
-
SATACLK Enable
Bit 3
-
PCIEX3 Enable
Bit 2
-
PCIEX2 Enable
Bit 1
-
PCIEX1 Enable
Bit 0
-
LCDCLK/PCIEX0 Enable
Control
Function
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
SMBus Table: Spread and Output Control Register
Byte 1
Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
-
Test Clock Mode Entry
-
DOT_96MHz Enable
-
USB_48MHz Enable
-
REF_0 Enable
-
LCDCLK/PCIEX0 Spectrum
Mode
-
CPUCLK1
-
CPUCLK0
Bit 0
-
Spread Spectrum Mode
Control
Function
Test Mode
Output Enable
Output Enable
Output Enable
Spread Control
Output Enable
Output Enable
Spread Control for PLL1
Type
RW
RW
RW
RW
RW
RW
RW
RW
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
0
Disable
Disable
Disable
Disable
OFF
Disable
Disable
OFF
SMBus Table: Output Control Register
Byte 2
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
PCICLK5
PCICLK4
PCICLK3
PCICLK2
Test Mode Selection
PCI_STOP
PCI_F0 Enable
PCI_F1 Enable
SMBus Table: Output Control Register
Byte 3
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
PCIEX6
PCIEX5
PCIEX4
SATACLK
PCIEX3
PCIEX2
PCIEX1
PCIEX0
Control
Function
Output Enable
Output Enable
Output Enable
Output Enable
Test Mode Selection
Stop all PCI, PCIEX and
SATA clocks
Output Enable
Output Enable
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
Disable
Disable
Disable
Disable
Hi-Z
Enable
Disable
Disable
Control
Function
Allow assertion of
PCI_STOP# or setting of
PCI_STOP control bit in
SMBus register to stop
PCIEX clocks
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
Free Running
Free Running
Free Running
Free Running
Free Running
Free Running
Free Running
Free Running
1
Enable
Enable
Enable
Enable
Enable
Enable
Enable
Enable
1
Enable
Enable
Enable
Enable
ON
Enable
Enable
ON
1
Enable
Enable
Enable
Enable
REF/N
Disable
Enable
Enable
1
Stoppable
Stoppable
Stoppable
Stoppable
Stoppable
Stoppable
Stoppable
Stoppable
PWD
1
1
1
1
1
1
1
1
PWD
0
1
1
1
1
1
1
0
PWD
1
1
1
1
0
1
1
1
PWD
0
0
0
0
0
0
0
0
IDT^® Programmable Timing Control Hub^TM for Mobile P4^TM Systems
9
0930A—04/13/10