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3.11 Switching Characteristics, TCM4300 to DSP Interface (Write Cycle) (see
Figure 3–11)
PARAMETER
ALTERNATE
SYMBOL
MIN MAX
UNIT
t
su(R/W)
Setup time, read/write DSPRW stable before falling edge of
strobe DSPSTRBL
TRW
(SU)
0 ns
t
h(R/W)
Hold time, read/write DSPRW stable after rising edge of
strobe DSPSTRBL
TRW
(HO)
0 ns
t
su(CS)
Setup time, chip select stable DSPCSL before falling edge
of strobe DSPSTRBL
TCS
(SU)
0 ns
t
h(CS)
Hold time, chip select DSPCSL stable after rising edge of
strobe DSPSTRBL
TCS
(HO)
0 ns
t
su(WA)
Setup time, write address DSPA stable before falling edge
of strobe DSPSTRBL
TWA
(SU)
0 ns
t
h(WA)
Hold time, write address DSPA stable after rising edge of
strobe DSPSTRBL
TWA
(HO)
0 ns
t
su(W)
Setup time, write data stable DSPD before rising edge of
strobe DSPSTRBL
TWD
(SU)
3 ns
t
h(W)
Hold time, write data stable DSPD after rising edge of
strobe DSPSTRBL
TWD
(HO)
0 ns
t
w(WSTB)
Pulse duration, write strobe pulse width low on DSPSTRBL TWR
(STB)
25 ns
90%
10%
t
su(W)
DSPA
DSPSTRBL
DSPD
10%
DSPCSL
DSPRW
t
h(WA)
t
su(WA)
10%
10%
90%
t
h(W)
t
w(WSTB)
t
su(R/W)
t
su(CS)
t
h(CS)
t
h(R/W)
Figure 3–11. TCM4300 to DSP Interface (Write Cycle)