
C9827J
High Performance Pentium 4 Clock Synthesizer
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07107 Rev. **
5/24/2001
Page 7 of 25
AC Parameters
66 MHz
Min
47.5
69.841
.7Vdd
0
-
100 MHz
Min
47.5
69.841
.7Vdd
0
-
133 MHz
Min
47.5
69.841
.7Vdd
0
-
200 MHz
Min
47.5
69.841
.7Vdd
0
-
Symbol
TDC
TPeriod
VHIGH
VLOW
Tr / Tf
Parameter
Xin Duty Cycle
Xin period
Xin High Voltage
Xin Low Voltage
Xin rise and fall
times
Xin Cycle to Cycle
Jitter
Max
52.5
71.0
Vdd
.3Vdd
10.0
Max
52.5
71.0
Vdd
.3Vdd
10.0
Max
52.5
71.0
Vdd
.3Vdd
10.0
Max
52.5
71.0
Vdd
.3Vdd
10.0
Units
%
nS
Volts
Volts
nS
Notes
1, 11, 14
1, 2, 4, 11
13
TCCJ
-
500
-
500
-
500
-
500
pS
2, 5, 11
CPU at 0.7 Volts Timing
100
TSKEW
Any CPU to CPU
clock Skew
CPU Cycle to
Cycle Jitter
CPU and CPU#
Duty Cycle
CPU and CPU#
period
CPU and CPU#
rise and fall times
-
100
-
-
100
-
100
pS
2, 5, 17
TCCJ
-
150
-
150
-
150
150
pS
2, 17, 22
TDC
45
55
45
55
45
55
45
55
%
5, 17, 22
TPeriod
14.85
15.3
9.85
10.2
7.35
7.65
4.85
5.1
nS
5, 17, 22
Tr / Tf
175
700
175
700
175
700
175
700
ps
5, 6, 25
Rise.Fall Matching
Rise Time Variation
Fall Time Variation
crossing point
voltage at 0.7 V
swing
-
-
-
20%
125
125
430
-
-
-
20%
125
125
430
20%
125
125
430
-
20%
125
125
430
-
6, 21, 22
6, 22
6, 22
5, 22
DeltaTr
DeltaTf
Vcross
-
-
ps
ps
mV
-
280
280
280
280
CPU at 1.0 Volts Timing
100
TSKEW
Any CPU to any
CPU clock Skew
CPU Cycle to
Cycle Jitter
CPU and CPU#
Duty Cycle
CPU and CPU#
period
CPU and CPU#
rise and fall times
Absolute Single-
ended rise/fall
waveform
symmetry
Cross point at 1.0
Volt swing
-
100
-
-
100
-
100
pS
2, 5, 17
TCCJ
-
150
-
150
-
150
150
pS
2, 17
TDC
45
55
45
55
45
55
45
55
%
5, 17
TPeriod
14.85
15.3
9.85
10.2
7.35
7.65
4.85
5.1
nS
5, 17
Differential
Tr / Tf
SE-
DeltaSlew
175
467
175
467
175
467
175
467
ps
5, 25
325
325
325
325
ps
7, 26
Vcross
510
760
510
760
510
760
510
760
mV
26
TDC
TPeriod
THIGH
TLOW
Tr / Tf
3V66 Duty Cycle
3V66 period
3V66 high time
3V66 low time
3V66 rise and fall
times
3V66 to 3V66 clock
skew
3V66 to 3V66 clock
skew
DRCG Cycle to
Cycle Jitter
45
15.0
4.95
4.55
0.5
55
15.3
-
-
2.0
45
15.0
4.95
4.55
0.5
55
15.3
-
-
2.0
45
15.0
4.95
4.55
0.5
55
15.3
-
-
2.0
45
15.0
4.95
4.55
0.5
55
15.3
-
-
2.0
%
nS
nS
nS
nS
2, 4
1, 2, 4
19
20
3
Tskew
Unbuffered
Tskew
Buffered
TCCJ
-
500
-
500
-
500
-
500
pS
2, 4
-
250
-
250
-
250
-
250
pS
2, 4
-
250
-
250
-
250
-
250
pS
2, 4