Texas Instruments manual ±11. TCM4300 to DSP Interface Write Cycle

3.11Switching Characteristics, TCM4300 to DSP Interface (Write Cycle) (see Figure 3±11)

PARAMETER

ALTERNATE

MIN MAX

UNIT

SYMBOL

tsu(R/W)

Setup time, read/write DSPRW stable before falling edge of

TRW(SU)

0

ns

strobe DSPSTRBL

th(R/W)

Hold time, read/write DSPRW stable after rising edge of

TRW(HO)

0

ns

strobe DSPSTRBL

tsu(CS)

Setup time, chip select stable DSPCSL before falling edge

TCS(SU)

0

ns

of strobe DSPSTRBL

th(CS)

Hold time, chip select DSPCSL stable after rising edge of

TCS(HO)

0

ns

strobe DSPSTRBL

tsu(WA)

Setup time, write address DSPA stable before falling edge

TWA(SU)

0

ns

of strobe DSPSTRBL

th(WA)

Hold time, write address DSPA stable after rising edge of

TWA(HO)

0

ns

strobe DSPSTRBL

tsu(W)

Setup time, write data stable DSPD before rising edge of

TWD(SU)

3

ns

strobe DSPSTRBL

th(W)

Hold time, write data stable DSPD after rising edge of

TWD(HO)

0

ns

strobe DSPSTRBL

tw(WSTB) Pulse duration, write strobe pulse width low on DSPSTRBL

TWR(STB)

25

ns

DSPCSL

10%

10%

tsu(CS)

th(CS)

tw(WSTB)

90%

90%

DSPSTRBL

10%

10%

tsu(R / W)

th(R / W)

DSPRW

t

su(WA)

th(WA)

DSPA

DSPD

tsu(W)

th(W)

Figure 3±11. TCM4300 to DSP Interface (Write Cycle)

3±11