ics9fg1901 Integrated Device Technology, ics9fg1901 Datasheet - Page 12

• Manufacturer Part Number: ics9fg1901
• Description: Frequency Generator For P4? ? ? ? ? Cpu, Pci Express? ? ? ? ? & Fully Buffered Dimm Clocks
• Manufacturer: Integrated Device Technology

0962E—01/02/07
SMBusTable: Control Pin Readback Register
SMBusTable: Reserved Register
SMBus Table: M/N Programming & Watchdog Safe Register
SMBus Table: Gearing PLL Frequency 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
Byte 10
Byte 11
Byte 8
Byte 9
Integrated
Circuit
Systems, Inc.
5
-
-
-
-
-
-
-
-
-
Pin #
Pin #
Pin #
Pin #
Gearing PLL M Div5
Gearing PLL M Div4
Gearing PLL M Div3
Gearing PLL M Div2
Gearing PLL M Div1
Gearing PLL M Div0
Gearing PLL N Div8
Gearing PLL N Div9
M/N_EN
DIF_18
DIF_17
DIF_16
DIF_15
DIF_14
Name
Name
Name
Name
Readback - FS_A_410
Gearing PLL and 1:1 PLL M/N
M Divider Programming
Programming Enable
N Divider Prog bit 8
N Divider Prog bit 9
Control Function
Control Function
Control Function
Control Function
Output Control
Output Control
Output Control
Output Control
Output Control
bit (5:0)
12
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
Type
Type
Type
Type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
R
Disable
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
0
0
0
0
Readback
ICS9FG1901
Enable
Enable
Enable
Enable
Enable
Enable
1
1
1
1
PWD
PWD
PWD
PWD
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
1
1
1
1
0
0
0
0
0
0
0
0
0