CY28346-2
AC Parameters (VDD = VDDA = 3.3V 5%) (continued)
66 MHz 100 MHz
133 MHz
200 MHz
Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max. Unit
Notes
Tskew
Any CPU to CPU
Clock Skew
100
150
700
20%
100
100
150
700
20%
100
ps
8, 11, 12
Tccj
CPU Cycle to Cycle
Jitter
150
700
20%
150
700
20%
ps
11, 12, 13
Tr/Tf
CPUT and CPUC
Rise and Fall Times
175
175
175
175
ps 11, Notes:,
16
Rise/Fall Matching
Notes:, 15,
13
DeltaTr
DeltaTf
Vcross
Rise Time Variation
Fall Time Variation
125
125
430
125
125
430
125
125
430
125
125
430
ps Notes:, 13
ps Notes:, 13
Crossing Point
Voltage at 0.7V
Swing
280
280
280
280
mV
11, 13
CPU at 1.0V Timing
Tdc
CPUT and CPUC
Duty Cycle
45
55
45
55
45
55
45
55
%
nS
pS
pS
ps
ps
11, 12
11, 12
8, 11, 12
8, 12
Tperiod
Tskew
Tccj
CPUT and CPUC
Period
14.85
15.3
100
150
467
325
9.85
10.2
100
150
467
325
7.35
7.65
100
150
467
325
4.85
5.1
Any CPU to Any
CPU Clock Skew
100
150
467
325
CPU Cycle to Cycle
Jitter
Differential CPUT and CPUC
Rise and Fall Times
175
510
175
510
175
510
175
510
11, 16
17, 18
Tr/Tf
SE-
Absolute Single-
DeltaSlew ended Rise/Fall
Waveform
Symmetry
Vcross
Cross Point at 1.0V
swing
760
760
760
760
mV
18
3V66
Tdc
3V66 Duty Cycle
3V66 Period
45
55
45
55
45
55
45
55
%
ns
ns
ns
ns
8, 9
5, 8, 9
19
Tperiod
Thigh
Tlow
15.0
4.95
4.55
0.5
15.3
15.0
4.95
4.55
0.5
15.3
15.0
4.95
4.55
0.5
15.3
15.0
4.95
4.55
0.5
15.3
3V66 High Time
3V66 Low Time
20
Tr / Tf
3V66 Rise and Fall
Times
2.0
2.0
2.0
2.0
21
Notes:
14. Measured from Vol = 0.175V to Voh = 0.525V.
15. Determined as a fraction of 2*(Trise – Tfall)/ (Trise + Tfall).
16. Measurement taken from differential waveform, from –0.35V to +0.35V.
17. Measurements taken from common mode waveforms, measure rise/fall time from 0.41 to 0.86V. Rise/fall time matching is defined as “the instantaneous difference
between maximum clk rise (fall) and minimum clk# fall (rise) time or minimum clk rise (fall) and maximum clk# fall (rise) time”. This parameter is designed form
waveform symmetry.
18. Measured in absolute voltage, i.e. single-ended measurement.
19. THIGH is measured at 2.4V for non host outputs.
20. TLOW is measured at 0.4V for all outputs.
21. Probes are placed on the pins, and measurements are acquired between 0.4V and 2.4V for 3.3V signals (see test and measurement set-up section of this data
sheet).
Rev 1.0,November 20, 2006
Page 15 of 19
SPECTRALINEAR [ SPECTRALINEAR INC ]
