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7.19.3UTOPIAElectricalData/Timing
UXCLK
1
2
3
4
4
URCLK
1
2
3
4
4
SM320C6455-EP
FIXED-POINTDIGITALSIGNALPROCESSOR
SPRS462B–SEPTEMBER2007–REVISEDJANUARY2008
Table7-106.TimingRequirementsforUXCLK
(1)
(seeFigure7-74)
-720
-850
A-1000/-1000
NO.UNIT
-1200
MINMAX
1t
c(UXCK)
Cycletime,UXCLK20ns
2t
w(UXCKH)
Pulseduration,UXCLKhigh0.4t
c(UXCK)
0.6t
c(UXCK)
ns
3t
w(UXCKL)
Pulseduration,UXCLKlow0.4t
c(UXCK)
0.6t
c(UXCK)
ns
4t
t(UXCK)
Transitiontime,UXCLK2ns
(1)ThereferencepointsfortheriseandfalltransitionsaremeasuredatV
IL
MAXandV
IH
MIN.
Figure7-74.UXCLKTiming
Table7-107.TimingRequirementsforURCLK
(1)
(seeFigure7-75)
-720
-850
A-1000/-1000
NO.UNIT
-1200
MINMAX
1t
c(URCK)
Cycletime,URCLK20ns
2t
w(URCKH)
Pulseduration,URCLKhigh0.4t
c(URCK)
0.6t
c(URCK)
ns
3t
w(URCKL)
Pulseduration,URCLKlow0.4t
c(URCK)
0.6t
c(URCK)
ns
4t
t(URCK)
Transitiontime,URCLK2ns
(1)ThereferencepointsfortheriseandfalltransitionsaremeasuredatV
IL
MAXandV
IH
MIN.
Figure7-75.URCLKTiming
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