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ICS950818 датащи(PDF) 5 Page - Integrated Circuit Systems

номер детали ICS950818
подробное описание детали  Frequency Generator with 200MHz Differential CPU Clocks
PDF  20 Pages
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производитель  ICST [Integrated Circuit Systems]
домашняя страница  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS950818 датащи(HTML) 5 Page - Integrated Circuit Systems

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5
ICS950818
0825F—11/19/03
Pin #
Name
0
1
PWD
Bit 7
-
Spread Enabled
Spread Spectrum Control
RW
OFF
ON
0
Bit 6
-
CPUCLKT(1:0)
Power down mode output level
0= CPU driven in power down
1= undriven
RW
x2 IREF
Hi-Z
0
Bit 5
31
3V66_1/VCH_CLK
VCH/66.66 Select
RW
66.66
48.00
0
Bit 4
44
CPU_STOP#
Reflects value of pin
R
Stop
Active
X
Bit 3
30
PCI_STOP#
Reflects value of pin at power up.
Also can be set.
RW
Stop
Active
X
Bit 2
-
-
(Reserved)
R
-
-
X
Bit 1
46
FS1
Frequency Selection
R
-
-
X
Bit 0
36
FS0
Frequency Selection
R
-
-
X
Note:
Pin #
Name
0
1
PWD
Bit 7
-
-
(Reserved)
R
-
-
X
Bit 6
-
CPUCLKT(1:0)
CPU_Stop mode output level
0= CPU driven when stopped
1 = undriven
RW
x2 IREF
Hi-Z
0
Bit 5
39, 38
CPUCLKT1, CPUCLKC1
(see note)
Allow control of output with
assertion of CPU_STOP#.
RW
Not
Freerun
Freerun
0
Bit 4
43, 42
CPUCLKT0, CPUCLKC0
(see note)
Allow control of output with
assertion of CPU_STOP#.
RW
Not
Freerun
Freerun
0
Bit 3
-
-
(Reserved)
R
-
-
X
Bit 2
39, 38
CPUCLKT1, CPUCLKC1
Output control
RW
Disable
Enable
1
Bit 1
43, 42
CPUCLKT0, CPUCLKC0
Output control
RW
Disable
Enable
1
Bit 0
-
-
(Reserved)
R
-
-
X
Note:
Pin #
Name
0
1
PWD
Bit 7
47
REF
1X or 0.5X Strength control
RW
1X
0.5X
0
Bit 6
14
PCICLK5
Output control
RW
Disable
Enable
1
Bit 5
13
PCICLK4
Output control
RW
Disable
Enable
1
Bit 4
12
*PCICLK3
Output control
RW
Disable
Enable
1
Bit 3
-
-
Reserved
X
-
-
1
Bit 2
10
*PCICLK2
Output control
RW
Disable
Enable
1
Bit 1
9
PCICLK1
Output control
RW
Disable
Enable
1
Bit 0
8
PCICLK0
Output control
RW
Disable
Enable
1
Note:
Control Function
Affected Pin
Bit Control
Control Function
Affected Pin
For PCI_STOP# function, refer to table 2.
Type
Bit Control
Type
BYTE
0
BYTE
1
BYTE
2
Control Function
Bit Control
CPUCLK(1:0) can be turned on/off by CPU_STOP#. Refer to table 3.
PCICLK(5:0) can be turned on/off by PCI_STOP#. Refer to table 2.
Affected Pin
Type



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