SMJ320C80 Datasheet, PDF (138/157 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSOR

SMJ320C80
DIGITAL SIGNAL PROCESSOR
SGUS025A – AUGUST 1998 – REVISED JUNE 2002
general output signal characteristics over operating conditions
The following general timing parameters apply to all SMJ320C80 output signals unless otherwise specifically
given. The value n as used in the parameters represents the integral number of half cycles between the
transitions of the two outputs in question. For timing purposes, outputs fall into one of three groups – the data
bus (D[63:0]); the other output buses (A[31:0], STATUS[5:0], CAS/DQM[7:0]; and non-bus outputs (DBEN, RL,
DDIN, DSF, RAS, TRG/CAS, W). When measuring output to output, the named group refers to the second
output to transition (output B), and the first output (output A) refers to any output group.
NO
PARAMETER
Hold time, CLKOUT high after output valid D[63:0]
23 th(OUTV-CKOL) A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS, TRG/CAS, W, RL
Hold time, CLKOUT low after output valid D[63:0]
24 th(OUTV-CKOH) A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS, TRG/CAS, W, RL
25 th(CKOL-OUTV) Hold time, output valid after CLKOUT low
26 th(CKOH-OUTV) Hold time, output valid after CLKOUT high
Hold time, output valid after output valid D[63:0]
27 th(OUTV-OUTV) A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS, TRG/CAS, W, RL
Delay time, CLKOUT no longer low to output valid D[63:0]
28 td(CKOH-OUTV) A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS,TRG/CAS, W, RL
Delay time, CLKOUT no longer high to output valid D[63:0]
29 td(CKOL-OUTV) A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS,TRG/CAS, W, RL
30 td(OUTV-CKOH) Delay time, output no longer valid to CLKOUT high
31 td(OUTV-CKOL) Delay time, output no longer valid to CLKOUT low
Delay time, output no longer valid to output valid D[63:0]
32 td(OUTV-OUTV) A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS, TRG/CAS, W, RL
Pulse duration, output valid D[63:0]
33 tw(OUTV)
A[31:0], STATUS[5:0], CAS/DQM[7:0]
DBEN, DDIN, DSF, RAS, TRG/CAS, W, RL
† _{Except for CAS/DQM[7:0] during nonuser-timed 2-cycle/column accesses}
MIN
MAX
ntH–5.6
ntH–5.0^†
ntH–4.3
ntH–5.6
ntH–5.0^†
ntH–4.3
ntH–5.5
ntH–5
ntH–6.5
ntH–6.0^†
ntH–5
ntH–6.5
ntH–6.0^†
ntH–5.0
ntH+6.5
ntH+5.5^†
ntH+5
ntH+6.5
ntH+5.5^†
ntH+5
ntH+5
ntH+5.5
ntH+6.5
ntH+6.0^†
ntH+5
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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