Texas Instruments TURBO-DECODER COPROCESSOR 2 TMS320C6457 DSP Benutzerhandbuch
6.19 TCP2 Output Parameter Register 0 (TCPOUT0)
6.20 TCP2 Output Parameter Register 1 (TCPOUT1)
Registers
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The TCP2 output parameter register 0 (TCPOUT0) is shown in
and described in
Figure 49. TCP2 Output Parameter Register 0 (TCPOUT0)
31
29 28
24 23
20 19
0
Reserved
FINAL_ITER
Reserved
SNR_M1
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 24. TCP2 Output Parameter Register 0 (TCPOUT0) Field Descriptions
Bit
Field
Value
Description
31-29
Reserved
0
Reserved. The reserved bit location is always read as 0. A value written to this field has no effect.
28-24
FINAL_ITER
0-
Number of decoded iterations.
FFFFh
23-20
Reserved
0
Reserved. The reserved bit location is always read as 0. A value written to this field has no effect.
19-0
SNR_M1
0
First moment of SNR calculations.
The TCP2 output parameter register 1 (TCPOUT1) is shown in
and described in
Figure 50. TCP2 Output Parameter Register 1 (TCPOUT1)
31
30
28
28
27
24
SNR_EXCEED
CRC_PASS
ACTIVE_MAP
Reserved
R/W-0
R/W-0
R/W-0
R/W-0
23
0
SNR_M2
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 25. TCP2 Output Parameter Register 1 (TCPOUT1) Field Descriptions
Bit
Field
Value
Description
31-30
SNR_EXCEED
Decoder terminated due to crc
0
0 MAP0 failed SNR
0
1 MAP0 passed SNR
1
0 MAP0 failed SNR
1
1 MAP0 passed SNR
29
CRC_PASS
Decoder terminated due to snr
0
Crc has not passed
1
Crc has passed
28
ACTIVE_MAP
Active map
0
MAP0 is active
1
MAP1 is active
Note: ACTIVE_MAP bit status is reserved when the FREE bit = 0 and the SOFT bit = 0.
27-24
Reserved
Reserved. The reserved bit location is always read as 0. A value written to this field has no effect.
23-0
SNR_M2
Second moment of calculation
TMS320C6457 Turbo-Decoder Coprocessor 2
42
SPRUGK1 – March 2009