ICS932S203 Datasheet, PDF (3/18 Pages) Integrated Circuit Systems – Frequency Generator with 133MHz Differential CPU Clocks

ICS932S203
Frequency Generator with 133MHz Differential CPU Clocks
Frequency Select Table
FS1 FS0
1
0
CPU
100
3V66
(1:0)
66Buff (2:0) /
3V66 (4:2)
66 In /
3V66_5
PCI
REF
66.6 66.6 In path 66.6 IN 66.6 in/2 14.318
1
1
0
0
0
1
mid¹ 0
mid¹ 1
133.3
100
133.3
Hi-Z
Tclk/2
66.6
66.6
66.6
Hi-Z
66.6 In path
66.6
66.6
Hi-Z
66.6 IN 66.6 in/2 14.318
66.6
33.3 14.318
66.6
33.3 14.318
Hi-Z
Hi-Z
Hi-Z
Tclk/4
Tclk/4
Tclk/4 Tclk/8 Tclk
1. Low=Vin < 0.8V, Mid=1.0V < Vin < 1.8V, High=Vin > 2.0V
USB,
DOT
48
48
48
48
Hi-Z
Tclk/2
note
Buffer
mode 66
Buffer
mode 66
Driven 66
Driven 66
Tri-state
outputs
Tclk is at
X1 input
Host Swing Select Functions
MULTISEL0
Board Target
Trace/Term Z
0
50 ohms
1
50 ohms
Reference R,
Iref =
V_DD/(3*Rr)
Rr = 221 1%,
Iref = 5.00mA
Rr = 475 1%,
Iref = 2.32mA
Output
Current
Voh @ Z
Ioh = 4* I REF 1.0V @ 50
Ioh = 6* I REF 0.7V @ 50
IDT^TM Frequency Generator with 133MHz Differential CPU Clocks
3
0601G—01/26/10