ICS557-05A Datasheet, PDF (2/12 Pages) Integrated Circuit Systems – Quad Differential PCI-Express Clock Source

ICS557-05A
QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE
Pin Assignment
VDDXD
1
S0
2
S1
3
S2
4
X1
5
X2
6
PD
7
OE
8
GNDXD
9
IREF
10
20
CLKA
19
CLKA
18
CLKB
17
CLKB
16
GNDODA
15
VDDODA
14
CLKC
13
CLKC
12
CLKD
11
CLKD
20-pin (173 mil) TSSOP
Spread Spectrum Selection Table
S2 S1 S0 Spread% Spread Type
00 0
-0.5
Down
00 1
-1.0
Down
01 0
-1.5
Down
0 1 1 No Spread Not Applicable
10 0
-0.5
Down
10 1
-1.0
Down
11 0
-1.5
Down
1 1 1 No Spread Not Applicable
Output
Frequency
100
100
100
100
200
200
200
200
PCIE SSCG
IDT™ / ICS™ QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE
2
ICS557-05A REV H 092407