AD6635BBSLASHPCB datasheet(22/60 Pages) AD

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AD6635

TIMING DIAGRAMS – MNM Microport Mode (MODE = 1)

VALID ADDRESS

VALID DATA

CLK0

CLK1

DS (RD)

RW (

WR)

CS0

CS1

A[2:0]

D[7:0]

DTACK

(RDY)

NOTES

tACC ACCESS TIME DEPENDS ON THE ADDRESS ACCESSED. ACCESS TIME IS MEASURED

FROM FE OF

DS TO THE FE OF DTACK.

tACC REQUIRES A MAXIMUM OF 9 CLK PERIODS.

tSC

tHC

tHDS

tHRW

tHAM

tACC

tSAM

tHAM

tSAM

tDDTACK

Figure 22. MNM Microport Write Timing Requirements. CLK0 corresponds to

CS0, and CLK1 to CS1.

CS0 and CS1 both active (low) at the same time will cause errors in writing.

CLK0

CLK1

DS (RD)

RW (

WR)

A[2:0]

D[7:0]

DTACK

(RDY)

tSC

tACC

tDDTACK

NOTES

tACC ACCESS TIME DEPENDS ON THE ADDRESS ACCESSED. ACCESS TIME IS MEASURED

FROM THE FE OF

DS TO THE FE OF DTACK.

tACC REQUIRES A MAXIMUM OF 13 CLK PERIODS.

VALID ADDRESS

VALID DATA

tSAM

tHC

tHDS

tHAM

CS0

CS1

Figure 23. MNM Microport Read Timing Requirements. CLK0 corresponds to

CS0, and CLK1 to CS1.

CS0 and CS1 both active (low) at the same time will cause contention on data bus.

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