SY89801A データシートの表示（PDF） - Micrel
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SY89801A Datasheet PDF : 5 Pages
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Micrel
ClockWorks™
PRELIMINARY
SY89801A
APPLICATIONS INFORMATION
The following table lists the various PCLK and RCLK
ratios supported by the SY89801A and the corresponding
PCLK, RCLK, FB and VCO frequencies. The table is
arranged in order of increasing PCLK:RCLK ratio. The
table was designed to balance several constraints:
s 2.5:1 VCO frequency range
s Maximum system frequency of 120MHz plus 10%
margin
s Maximum output frequency of 264MHz
FSEL <2:0>
000
001
010
011
100
101
110
111
PCLK:RCLK
1:1
4:3
3:2
5:3
2:1
1:1
1:1
n/a
fPCLK (MHz)
100-132
133.3-176
150-198
166.7-220
200-264
100-132
100-132
n/a
fRCLK (MHz)
100-132
100-132
100-132
100-132
100-132
100-132
100-132
n/a
VCO ÷ ratios
VCO/P:VCO/R
8:8
6:8
4:6
6:10
4:8
6:6
10:10
n/a
fVCO (MHz)
800-1056
800-1056
600-792
1000-1320
800-1056
600-792
1000-1320
n/a
LOOP FILTER COMPONENT SELECTION
R
C1
filp
filn
R = 500Ω ±10%
C1 = 1000pF ±10%
PRODUCT ORDERING CODE
Ordering
Code
Package
Type
SY89801AMC
M44-1
SY89801AMCA(1)
M44-1
NOTES:
1. "A" denotes enhanced 200MHz testing.
Operating
Range
Commercial
Commercial
4
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