參數(shù)資料
型號(hào): 953002CFLFT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: 400 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56
封裝: 0.300 INCH, ROHS COMPLIANT, MO-118, SSOP-56
文件頁(yè)數(shù): 19/35頁(yè)
文件大小: 280K
代理商: 953002CFLFT
26
Integrated
Circuit
Systems, Inc.
ICS953002
0924—11/18/09
I
2C Table: Output Divider Control Register
Bit 7
Reserved
RW
1
Bit 6
Reserved
RW
1
Bit 5
Reserved
RW
1
Bit 4
Reserved
RW
1
Bit 3
AGP/PCIDiv3
RW
0000:/4
0100:/8
1000:/16
1100:/32
X
Bit 2
AGP/PCIDiv2
RW
0001:/3
0101:/6
1001:/12
1101:/24
X
Bit 1
AGP/PCIDiv1
RW
0010:/5
0110:/10 1010:/20
1110:/40
X
Bit 0
AGP/PCIDiv0
RW
0011:/9
0111:/18 1011:/36
1111:/72
X
I
2C Table: PLL2 Frequency Control Register
Bit 7
N Div8
N Divider Prog bit 8
RW
X
Bit 6
N Div9
N Divider Prog bit 9
RW
X
Bit 5
M Div5
RW
X
Bit 4
M Div4
RW
X
Bit 3
M Div3
RW
X
Bit 2
M Div2
RW
X
Bit 1
M Div1
RW
X
Bit 0
M Div0
RW
X
I
2C Table: PLL2 Frequency Control Register
Bit 7
N Div7
RW
X
Bit 6
N Div6
RW
X
Bit 5
N Div5
RW
X
Bit 4
N Div4
RW
X
Bit 3
N Div3
RW
X
Bit 2
N Div2
RW
X
Bit 1
N Div1
RW
X
Bit 0
N Div0
RW
X
I
2C Table: PLL2 Spread Spectrum Control Register
Bit 7
SSP7
RW
X
Bit 6
SSP6
RW
X
Bit 5
SSP5
RW
X
Bit 4
SSP4
RW
X
Bit 3
SSP3
RW
X
Bit 2
SSP2
RW
X
Bit 1
SSP1
RW
X
Bit 0
SSP0
RW
X
1
--
-
The decimal representation of M and N
Divier in Byte 17 and 18 will configure the
PLL2 VCO frequency. Default at power
up = latch-in or Byte 0 Rom table.
VCO Frequency = 14.318 x [NDiv(9:0)+8]
/ [MDiv(5:0)+2]
M Divider
Programming bits
Type
0
1
0
Byte 16
Pin #
Name
Control Function
-
1
-
N Divider Programming
b(7:0)
Byte 18
-
0
Byte 17
Pin #
Name
Control Function
-
The decimal representation of M and N
Divier in Byte 17 and 18 will configure the
PLL2 VCO frequency. Default at power
up = latch-in or Byte 0 Rom table.
VCO Frequency = 14.318 x [NDiv(9:0)+8]
/ [MDiv(5:0)+2]
-
PWD
Name
Control Function
-
Type
AGP/PCI Divider Ratio
Programmaing Bits
PLL1
-
Byte 19
Pin #
-
Name
Control Function
Type
PWD
01
These Spread Spectrum bits in Byte 19
and 20 will program the spread pecentage
of PLL2
Spread Spectrum
Programming b(7:0)
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