參數(shù)資料
型號(hào): ICS94220YFLF-T
廠(chǎng)商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): 時(shí)鐘產(chǎn)生/分配
英文描述: 133.3 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封裝: 0.300 INCH, MO-118, SSOP-48
文件頁(yè)數(shù): 18/18頁(yè)
文件大?。?/td> 145K
代理商: ICS94220YFLF-T
9
ICS94220
0443A—07/03/02
Byte 13: Spread Sectrum Control Register
Byte 14:
Spread Sectrum Control Register
Note: Please utilize software utility provided by ICS
Application Engineering to configure spread
spectrum. Incorrect spread percentage may cause
system failure.
t
i
BD
W
Pn
o
i
t
p
i
r
c
s
e
D
7
t
i
BX
7
t
i
B
m
u
r
t
c
e
p
S
d
a
e
r
p
S
6
t
i
BX
6
t
i
B
m
u
r
t
c
e
p
S
d
a
e
r
p
S
5
t
i
BX
5
t
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B
m
u
r
t
c
e
p
S
d
a
e
r
p
S
4
t
i
BX
4
t
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B
m
u
r
t
c
e
p
S
d
a
e
r
p
S
3
t
i
BX
3
t
i
B
m
u
r
t
c
e
p
S
d
a
e
r
p
S
2
t
i
BX
2
t
i
B
m
u
r
t
c
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p
S
d
a
e
r
p
S
1
t
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BX
1
t
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B
m
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c
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p
S
d
a
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0
t
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BX
0
t
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B
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t
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BD
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Pn
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D
7
t
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BX
d
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v
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R
6
t
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BX
d
e
v
r
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s
e
R
5
t
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BX
d
e
v
r
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s
e
R
4
t
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BX
2
1
t
i
B
m
u
r
t
c
e
p
S
d
a
e
r
p
S
3
t
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BX
1
t
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B
m
u
r
t
c
e
p
S
d
a
e
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p
S
2
t
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BX
0
1
t
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B
m
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c
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S
d
a
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p
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1
t
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BX
9
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B
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0
t
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BX
8
t
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B
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t
c
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p
S
d
a
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r
p
S
Note: Please utilize software utility provided by ICS
Application Engineering to configure spread
spectrum. Incorrect spread percentage may cause
system failure.
Byte 15: Output Skew Control
Byte 16: Output Skew Control
t
i
BD
W
Pn
o
i
t
p
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r
c
s
e
D
7
t
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B0
l
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C
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k
S
F
_
I
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P
6
t
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B0
5
t
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B0
4
t
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B0
3
t
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B0
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]
4
:
0
[
K
L
C
I
C
P
2
t
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B0
1
t
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B0
0
t
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B0
t
i
BD
W
Pn
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t
p
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7
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BX
d
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v
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R
6
t
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BX
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v
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5
t
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R
4
t
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BX
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R
3
t
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BX
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2
t
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BX
d
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r
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s
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1
t
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BX
d
e
v
r
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R
0
t
i
BX
d
e
v
r
e
s
e
R
Byte 17: Output Rise/FallTime Select Register
Byte 18: Output Rise/Fall Time Select Register
t
i
BD
W
Pn
o
i
t
p
i
r
c
s
e
D
7
t
i
B1
0
T
K
L
C
U
P
C
6
t
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B1
0
C
K
L
C
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P
C
5
t
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BX
d
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v
r
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s
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R
4
t
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B0
K
L
C
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P
C
3
t
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B1
l
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C
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:
T
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O
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2
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1
:
0
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A
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Pn
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:
]
4
:
0
[
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P
6
t
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B0
5
t
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B1
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F
_
I
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4
t
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3
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:
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8
4
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:
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2
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B0
Notes:
1. PWD = Power on Default
2. The power on default for byte 13-20 depends on the harware (latch inputs FS[0:4]) or I
2C (Byte 0 bit [1:7]) setting.
Be sure to read back and re-write the values of these 8 registers when VCO frequency change is desired for the first
pass.
3. If Byte 8 bit 7 is driven to "1" meaning programming is intended, Byte 21-24 will lose their default power up value.
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