Texas Instruments TMS380C26 - Manual (Page 64)

TMS380C26
NETWORK COMMPROCESSOR
SPWS010A–APRIL 1992–REVISED MARCH 1993
POST OFFICE BOX 1443
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HOUSTON, TEXAS
77251–1443
64
PARAMETER MEASUREMENT INFORMATION
(High)
Valid
Data
SADH0–SADH7,
SADL0–SADL7,
SPH, SPL
(see Note A)
SRDY
SDBEN †
SDDIR
SRD
SWR
SIACK
SRAS
SCS, SRSX,
SRS0–SRS2,
SBHE
262
276
267
266a
256
265
HI-Z
HI-Z HI-Z
HI-Z
281a
282b
275
272a
282W 283W
Data
255
272a
272a
273a
286
273a
273a
281
279
263
280
268
264
† When the TMS380C26 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.
NOTE A: In 8-bit 80x8x mode DIO writes, the value placed on SADH0–SADH7 is a don’t care.
Figure 29. 80x8x DIO Write Timing