TCM4300IPZ datasheet(33/69 Pages) TI1

33 / 69 page

3–11

3.10 Switching Characteristics, TCM4300 to DSP Interface (Read Cycle) (see

Figure 3–10)

PARAMETER

ALTERNATE

SYMBOL

MIN

MAX

UNIT

tsu(R/W)

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

strobe DSPSTRBL

TRW(SU)

th(R/W)

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

strobe DSPSTRBL

TRW(HO)

tsu(CS)

Setup time, chip select stable DSPCSL before falling edge

of strobe DSPSTRBL

TCS(SU)

th(CS)

Hold time, chip select DSPCSL stable after rising edge of

strobe DSPSTRBL

TCS(HO)

tsu(RA)

Setup time, read address DSPA stable before strobe

DSPSTRBL goes low

TWA(SU)

th(RA)

Hold time, read address DSPA stable after strobe

DSPSTRBL goes high

TWA(HO)

ten(R)

Enable time, read data on falling edge of strobe DSPSTRBL

to TCM4300 driving data bus DSPD

TRD(EN)

td(DV)

Delay read data valid time on falling edge of strobe

DSPSTRBL to valid data DSPD

TRD(DV)

th(R)

Hold time, read data DSPD invalid after rising edge of

strobe DSPSTRBL

TRD(INV)

tdis(R)

Disable time, read data. TCM4300 releases data bus after

rising edge of strobe DSPSTRBL

TRD(DIS)

90%

10%

th(R)

DSPA

DSPSTRBL

DSPD

tsu(R / W)

10%

DSPCSL

DSPRW

tsu(CS)

th(CS)

th(RA)

tsu(RA)

10%

90%

ten(R)

td(DV)

tdis(R)

th(R / W)

Figure 3–10. TCM4300 to DSP Interface (Read Cycle)

TCM4300IPZ Datasheet(PDF) 33 Page - Texas Instruments

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