Table 14-6. Representative Updatemlse Instruction Cycles (Sh = 0) - Lucent Technologies DSP1617 Information Manual

DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
Error Correction Coprocessor (DSP1618/28 Only)
14.6 ECCP Instruction Timing
14.6.2 UpdateMLSE Instruction with Soft Decision (continued)
Table 14-6 shows some representative values for the UpdateMLSE instruction cycles for different values of CL and
TBLR. For the UpdateMLSE instruction, CL has a maximum value of four corresponding to constraint length 6.
For the UpdateMLSE instruction with soft decision, the traceback length register can be programmed to a maxi-
mum value of 31. TBLR values greater than 31 are illegal and must not be used with the UpdateMLSE instruction
if soft decision mode is selected.

Table 14-6. Representative UpdateMLSE Instruction Cycles (SH = 0)

CL
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
3
3
3
3
4
14-20
(continued)
TBLR
1—7
8
9
10
11
1—10
11
12
13
14
1—16
17
18
19
20
1—28
29
30
31
1—31
DRAFT COPY
Cycles
19
20
21
22
23
23
24
25
26
27
31
32
33
34
35
47
48
49
50
79
Information Manual
April 1998
Lucent Technologies Inc.