TI380C25 Datasheet, PDF (43/71 Pages) Texas Instruments – TOKEN-RING COMMPROCESSOR

SCS, SRSX,
SRS0 – SRS2,
SBHE
SRAS
Valid
264
265
256
TI380C25
TOKEN-RING COMMPROCESSOR
SPWS012 – JANUARY 1995
268
SIACK
SWR
SRD
SDDIR
266a
267
272a
272a
272a
280
273a
273a
286
273a
SDBEN ^†
282W
283W
SRDY
276
282b
279
275
Hi-Z
255
Hi-Z
SADH0 – SADH7,
SADL0 – SADL7,
SPH, SPL ^‡
263
262
Hi-Z
Data
Hi-Z
† _{When the TMS380C25 begins to drive SDBEN inactive, it has already latched the write data internally. Parameter 263 must be met to the input}
of the data buffers.
‡ _{In 8-bit 80x8x-mode DIO writes, the value placed on SADH0 – SADH7 is a don’t care.}
Figure 15. 80x8x DIO Write-Cycle Timing
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