932S421BFLF IDT [Integrated Device Technology], 932S421BFLF Datasheet - Page 16

• Manufacturer Part Number: 932S421BFLF
• Description: PCIe Gen2 and QPI Clock for Intel-Based Servers
• Manufacturer: IDT [Integrated Device Technology]

IDT
SMBus Table: CPU Frequency Control Register
SMBus Table: CPU Frequency Control Register
SMBus Table: CPU Spread Spectrum Control Register
Byte 13
SMBus Table: CPU Spread Spectrum Control Register
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ICS932S421B
PCIe Gen2 and QPI Clock for Intel-Based Servers
TM
Byte 11
Byte 12
Byte 14
PCIe Gen2 and QPI Clock for Intel-Based Servers
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Pin #
Pin #
Pin #
Pin #
CPU M Div5
CPU M Div4
CPU M Div3
CPU M Div2
CPU M Div1
CPU M Div0
CPU N Div8
CPU N Div9
CPU N Div7
CPU N Div6
CPU N Div5
CPU N Div4
CPU N Div3
CPU N Div2
CPU N Div1
CPU N Div0
CPU SSP14
CPU SSP13
CPU SSP12
CPU SSP11
CPU SSP10
CPU SSP7
CPU SSP6
CPU SSP5
CPU SSP4
CPU SSP3
CPU SSP2
CPU SSP1
CPU SSP0
CPU SSP9
CPU SSP8
Name
Name
Name
Name
M Divider Programming
N Divider Programming
Programming bit(14:8)
Programming bit(7:0)
N Divider Prog bit 8
N Divider Prog bit 9
Control Function
Control Function
Byte12 bit(7:0) and
Control Function
Control Function
Spread Spectrum
Spread Spectrum
Byte11 bit(7:6)
bit (5:0)
16
Reserved
Type
Type
Type
Type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
frequency. Default at power up
frequency. Default at power up
Byte 13 and 14 will program the
Byte 13 and 14 will program the
M and N Divider in Byte 11 and
M and N Divider in Byte 11 and
These Spread Spectrum bits in
These Spread Spectrum bits in
12 will configure the CPU VCO
12 will configure the CPU VCO
= latch-in or Byte 0 Rom table.
= latch-in or Byte 0 Rom table.
The decimal representation of
The decimal representation of
[NDiv(9:0)+8] / [MDiv(5:0)+2]
[NDiv(9:0)+8] / [MDiv(5:0)+2]
VCO Frequency = 14.318 x
VCO Frequency = 14.318 x
spread pecentage of CPU
spread pecentage of CPU
0
0
0
0
1
1
1
1
1340G—01/26/10
PWD
PWD
PWD
PWD
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0