ICS9FG104D Datasheet, PDF (9/17 Pages) Integrated Device Technology – Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA

ICS9FG104D
Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA
SMBus Table: Frequency Select Readback Register
Byte 3
Pin #
Name
Control Function
Type
Bit 7
27
SEL14M_25M#¹
(FS3)
State of pin 17
R
Bit 6
6
Bit 5
44
Bit 4
45
Bit 3
16
Bit 2
Bit 1
Bit 0
FS2¹
FS1¹
FS0¹
SPREAD¹
State of pin 6
R
State of pin 24
R
State of pin 25
R
State of pin 26
R
Reserved
Reserved
Reserved
0
1
See Frequency Selection Table,
Page 1
Off
On
Default
Pin 17
Pin 6
Pin 24
Pin 25
Pin 16
0
0
0
Notes:
1. These bits reflect the state of the corresponding pins, regardless of whether software
programming is enabled or not.
SMBus Table: Vendor & Revision ID Register
Byte 4
Pin #
Name
Control Function
Type
0
Bit 7
-
RID3
R
-
Bit 6
-
Bit 5
-
RID2
RID1
R
-
REVISION ID
R
-
Bit 4
-
RID0
R
-
Bit 3
-
VID3
R
-
Bit 2
-
Bit 1
-
VID2
VID1
VENDOR ID
R
-
R
-
Bit 0
-
VID0
R
-
1
Default
-
X
-
X
-
X
-
X
-
0
-
0
-
0
-
1
SMBus Table: DEVICE ID
Byte 5
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
DID7
DID6
DID5
DID4
DID3
DID2
DID1
DID0
Control Function
Type
0
R
-
R
-
R
-
R
-
Device ID = 08 hex
R
-
R
-
R
-
R
-
1
Default
-
0
-
0
-
0
-
0
-
1
-
0
-
0
-
0
SMBus Table: Byte Count Register
Byte 6
Pin #
Name
Control Function
Type
0
Bit 7
-
BC7
RW
-
Bit 6
-
BC6
RW
-
Bit 5
-
BC5
Writing to this register will ^RW
-
Bit 4
-
Bit 3
-
Bit 2
-
BC4
configure how many bytes will RW
-
BC3
be read back, default is 07 = 7 _RW
-
BC2
bytes.
RW
-
Bit 1
-
BC1
RW
-
Bit 0
-
BC0
RW
-
IDT^® Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA
1
Default
-
0
-
0
-
0
-
0
-
0
-
1
-
1
-
1
1541C—12/16/10
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