CY28347
AC Parameters (continued)
66 MHz
100 MHz
133 MHz
200 MHz
Min. Max. Unit
Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Notes
REF
TDC
REF Duty Cycle
REF Period
45
55
45
55
45
55
45
55
% 5,10,6
TPeriod
Tr/Tf
69.8413 71.0 69.8413 71.0 69.8413 71.0 69.8413 71.0
ns 5,6,10
ns 10,21
REF Rise and Fall Times 1.0
REF Cycle-to-Cycle Jitter
4.0
1.0
4.0
1.0
4.0
1.0
4.0
TCCJ
1000
1000
1000
1000 ps 6,10,11,12
DDR
VX
Crossing Point Voltage of 0.5*VD 0.5*VD 0.5*VD 0.5*VD 0.5*VD 0.5*VD 0.5*VD 0.5*VD V 23
DDRT/C DD–0.2 DD+0.2 DD–0.2 DD+0.2 DD–0.2 DD+0.2 DD–0.2 DD+0.2
VD
Differential Voltage Swing 0.7 VDDD+ 0.7 VDDD+ 0.7 VDDD+ 0.7 VDDD+ V 22
0.6
0.6
0.6
0.6
TDC
DDRT/C(0:5) Duty Cycle
DDRT/C(0:5) Period
45
14.85
1
55
45
9.85
1
55
45
14.85
1
55
45
9.85
1
55
% 14
ns 14
TPeriod
Tr/Tf
15.3
3
10.2
3
15.3
3
10.2
3
DDRT/C(0:5) Rise/Fall
Slew Rate
V/ns 21
TSKEW
TCCJ
DDRT/C to Any DDRT/C
Clock Skew
100
75
100
75
100
75
100
75
ps 10,11,14
ps 10,11,14
DDRT/C(0:5)
Cycle-to-Cycle Jitter
THPJ
DDRT/C(0:5) Half Period
Jitter
100
4
100
4
100
4
100 ps 10,11,14
TDelay
TSKEW
tstable
BUF_IN to Any DDRT/C
Delay
1
1
1
1
4
ns 6,10
ps 6,10
ms 12
FBOUT to Any DDRT/C
Skew
100
1.5
100
1.5
100
1.5
100
1.5
All Clock Stabilization
from Power-up
Connection Circuit DDRT/C Signals
TPCB
Measurement Point
DDRT
16 pF
100:
TPCB
Measurement Point
16 pF
DDRC
Figure 1. Differential DDR Termination
Rev 1.0,November 20, 2006
Page 12 of 21
SPECTRALINEAR [ SPECTRALINEAR INC ]
