Network Router User Manual

TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993
86
POST OFFICE BOX 1443 HOUSTON, TEXAS 77001
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PARAMETER MEASUREMENT INFORMATION
233a
211a
TWAIT
V
T1T4T3T2T1TXT4
SDBEN
SDDIR
SDTACK
(see Notes A and B)
SADL0–SADH7,
SADH0–SADL7,
SPL, SPH
SALE
SXAL
SRNW
SUDS,
SLDS
SAS
SBCLK
Output DataAddress
Extended Address
237W
208a
208b
225W
221
243
239
223W
219
209
216a
211
222
217
212
216
218
233
233
215
217
218
216
Low
215
212
225WH
NOTES: A. All V
SS
pins should be routed to minimize inductance to system ground.
B. On read cycle, read strobe remains active until the internal sample of incoming data is completed. Input-data may be removed when either the read strobe or SDBEN
becomes no longer active.
Figure 42. 68xxx Mode DMA Write Timing