Z80189 Datasheet, PDF (13/107 Pages) Zilog, Inc. – GENERAL-PURPOSE EMBEDDED CONTROLLERS

Zilog
TIMING DIAGRAMS (Continued)
PRELIMINARY
Z80189/Z8L189
GENERAL-PURPOSE EMBEDDED CONTROLLERS
CSI/O Clock
Transmit Data
(Internal Clock)
Transmit Data
(External Clock)
Receive Data
(Internal Clock)
Receive Data
(External Clock)
56
57
11 tcyc
58
59
11.5 tcyc
16.5 tcyc
56
57
11 tcyc
58
59
11.5 tcyc
16.5 tcyc
60
61
60
61
Figure 14. CSI/O Receive/Transmit Timing
71
/MREQ
/RAMCS
/ROMCS
Figure 15. /ROMCS and /RAMCS Timing
DS971890301
13