6.2.3.Timing of Host Interface (DMA Multi)

Figure 10 shows the Host Interface DMA multi word Timings

t0

DMARQ

 

 

tL

DMACK-*1

 

tK

tI

tD

tJ

 

 

DIOR-/DIOW-*1

 

 

Read

tE

tZ

 

 

DD0-15

 

 

 

 

tF

Write

 

 

DD0-15

 

 

 

tG

tH

*1: In all timing diagrams, the low line indicator negated, and the upper line indicators asserted.

 

Multi word DMA

Min time (ns)

Max time (ns)

 

timing parameters min(ns) max(ns)

 

 

 

 

 

 

 

t0

Cycle time

120

 

 

 

 

 

tC

DMACK to DMREQ delay

 

---

 

 

 

 

tD

DIOR-/DIOW-16-bit

70

 

 

 

 

 

tE

DIOR- data access

 

---

 

 

 

 

tF

DIOR- data hold

5

 

 

 

 

 

tZ

DMACK- to tristate

 

25

 

 

 

 

tG

DIOR/DIOW- data setup

20

 

 

 

 

 

tH

DIOW- data hold

10

 

 

 

 

 

tI

DMACK to DIOR-/DIOW- setup

0

 

 

 

 

 

tJ

DIOR-/DIOW- to DMACK hold

5

 

 

 

 

 

tKr

DIOR- negated pulse width

25

 

 

 

 

 

tKw

DIOW- negated pulse width

25

 

 

 

 

 

tLr

DIOR- to DMREQ delay

 

35

 

 

 

 

tLw

DIOR- to DMREQ delay

 

35

 

 

 

 

Figure 10 Host Interface Timing (Multi Word DMA Mode 2)

15/24

SR-C8002 Rev.1.0

Page 20
Image 20
Toshiba SR-C8002 specifications 15/24, Shows the Host Interface DMA multi word Timings