PRELIMINARY
C9926
Low EMI Clock Generator for Intel 133MHz/ 2DIMM Chipset Systems
AC Parameters
133MHz Host
100MHz Host
66MHz Host
Symbol
Parameter
CPU(0:1) period1,2
CPU(0:1) high time6
CPU(0:1) low time7
CPU(0:1) rise and fall times3
CPU0 to CPU Skew2,5
CPU(0:1) Cycle to Cycle Jitter2,5
SDRAM(0:8) period1,2
SDRAM(0:8) high time6
SDRAM(0:8) low time7
SDRAM(0:8) rise and fall times3
(Any SDRAM) to (any SDRAM) Skew2,5
SDRAM(0:8) Cycle to Cycle Jitter2,5
IOAPIC period1,2
IOAPIC high time6
IOAPIC low time7
IOAPIC rise and fall times3
IOAPIC Cycle to Cycle Jitter2,5
3V66-(0:2) period1,2
3V66-(0:2) high time6
3V66-(0:2) low time7
3V66-(0:2) rise and fall times3
(Any 3V66) to (any 3V66) Skew2,5
3V66-(0:2) Cycle to Cycle Jitter2,5
PCI(0:4) period1,2
Units
Min
7.5
1.87
1.67
0.4
-
Max
8.0
-
Min
10.0
3.0
2.8
0.4
-
Max
10.5
-
Min
15.0
5.2
5.0
0.4
-
Max
15.5
-
TPeriod
THIGH
TLOW
Tr / Tf
ns
ns
ns
ns
ps
ps
ns
ns
ns
ns
ps
ps
ns
ns
ns
ns
ps
ns
ns
ns
ns
ps
ps
ns
ns
ns
ns
ps
ps
ns
-
-
-
1.6
175
250
8.0
-
1.6
175
250
10.5
-
1.6
175
250
10.5
-
TSKEW
TCCJ
-
-
-
TPeriod
THIGH
TLOW
Tr / Tf
7.5
1.87
1.67
0.4
-
10.0
3.0
2.8
0.4
-
10.0
3.0
2.8
0.4
-
-
-
-
1.6
250
250
-
1.6
250
250
-
1.6
250
250
-
TSKEW
TCCJ
-
-
-
TPeriod
THIGH
TLOW
Tr / Tf
30.0
12.0
12.0
0.4
-
30.0
12.0
12.0
0.4
-
30.0
12.0
12.0
0.4
-
-
-
-
-
-
-
1.6
500
16.0
-
1.6
500
16.0
-
1.6
500
16.0
-
TCCJ
TPeriod
THIGH
TLOW
Tr / Tf
15.0
5.25
5.05
0.5
-
15.0
5.25
5.05
0.5
-
15.0
5.25
5.05
0.5
-
-
-
-
2.0
175
500
-
2.0
175
500
-
2.0
175
500
-
TSKEW
TCCJ
-
-
-
Tperiod0
THIGH
TLOW
Tr / Tf
30.0
12.0
12.0
0.5
-
30.0
12.0
12.0
0.5
-
30.0
12.0
12.0
0.5
-
PCI(0:4) period6
PCI(0:4) low time7
PCI(0:4) rise and fall times3
(Any PCI) to (Any PCI) Skew2,5
PCI(0:4) Cycle to Cycle Jitter2,5
-
-
-
-
-
-
2.0
500
500
2.0
500
500
2.0
500
500
TSKEW
TCCJ
-
-
-
TPeriod
DOT & USB period (conforms to +167ppm
max) 1,2
20.8299 20.8333 20.8299 20.8333 20.829 20.833
Tr / Tf
TCCJ
DOT & USB rise and fall times3
DOT & USB Cycle to Cycle Jitter2,5
1.0
-
4.0
1.0
-
4.0
1.0
-
4.0
ns
ps
500
500
500
Cypress Semiconductor Corporation
525 Los Coches St.
Document#: 38-07070 Rev. **
5/4/2001
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress
Page 16 of 21
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