13-26
DSP56305 User’s Manual
MOTOROLA
VITERBI CO-PROCESSOR
Programming Model
13.5.8
Viterbi Tap Register B (VTPB)
The Viterbi Tap B register (VTPB) is a 16-bit write-only register containing (during
encoding and decoding) convolutional code tap polynomials. The VTPB is used for the
three most significant polynomials: G
5
, G
4
, G
3
. The polynomial taps are represented as 1
for a existing tap and 0 for a non-existent tap. The tap bits do not include the MSB and
LSB of the polynomial, which are 1 for all codes. Tap values must be programmed before
starting encoding or decoding.
13.5.8.1
Tap Vector D (TAPD{4:0])—VTPB Bits 4–0
The Tap Vector D (TAPD[4:0]) bits contain the vector 3 taps (G
3
), excluding its MSB and
LSB.
13.5.8.2
Tap Vector E (TAPE[4:0])—VTPB Bits 9–5
The Tap Vector E (TAPE[4:0]) bits contain the vector 4 taps (G
4
), excluding its MSB and
LSB.
13.5.8.3
Tap Vector F (TAPF[4:0])—VTPB Bits 14–10
The Tap Vector F (TAPF[4:0]) bits contain the vector 5 taps (G
5
), excluding its MSB and
LSB.
13.5.8.4
Reserved Bit—VTPB Bit 15
This bit is reserved and should be written with zero.
Figure 13-13
Viterbi Tap Register B (VTPB)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
TAPF4 TAPF3 TAPF2 TAPF1 TAPF0 TAPE4 TAPE3 TAPE2 TAPE1 TAPE0 TAPD4 TAPD3 TAPD2 TAPD1 TAPD0
Reserved bit, Read as zero.
AA1322
Summary of Contents for DSP56305
Page 34: ...xxxii DSP56305 User s Manual MOTOROLA ...
Page 40: ...xxxvi DSP56305 User s Manual MOTOROLA ...
Page 41: ...MOTOROLA DSP56305 User s Manual 1 1 SECTION 1 DSP56305 OVERVIEW ...
Page 58: ...1 18 DSP56305 User s Manual MOTOROLA DSP56305 Overview DSP56305 Architecture Overview ...
Page 59: ...MOTOROLA DSP56305 User s Manual 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Page 98: ...2 40 DSP56305 User s Manual MOTOROLA Signal Connection Descriptions JTAG OnCE Interface ...
Page 99: ...MOTOROLA DSP56305 User s Manual 3 1 SECTION 3 MEMORY CONFIGURATION ...
Page 119: ...MOTOROLA DSP56305 User s Manual 4 1 SECTION 4 CORE CONFIGURATION ...
Page 144: ...4 26 DSP56305 User s Manual MOTOROLA Core Configuration JTAG Boundary Scan Register BSR ...
Page 145: ...MOTOROLA DSP56305 User s Manual 5 1 SECTION 5 GENERAL PURPOSE I O ...
Page 149: ...HOST INTERFACE HI32 MOTOROLA DSP56305 User s Manual 6 1 SECTION 6 HOST INTERFACE HI32 ...
Page 150: ...6 2 DSP56305 User s Manual MOTOROLA HOST INTERFACE HI32 ...
Page 259: ...MOTOROLA DSP56305 User s Manual 7 1 SECTION 7 ENHANCED SYNCHRONOUS SERIAL INTERFACE ESSI ...
Page 315: ...MOTOROLA DSP56305 User s Manual 8 1 SECTION 8 SERIAL COMMUNICATION INTERFACE SCI ...
Page 347: ...MOTOROLA DSP56305 User s Manual 9 1 SECTION 9 TIMER EVENT COUNTER ...
Page 376: ...9 30 DSP56305 User s Manual MOTOROLA Timer Event Counter Timer Modes of Operation ...
Page 377: ...MOTOROLA DSP56305 User s Manual 10 1 SECTION 10 ON CHIP EMULATION MODULE ...
Page 411: ...MOTOROLA DSP56305 User s Manual 11 1 SECTION 11 JTAG PORT ...
Page 430: ...11 20 DSP56305 User s Manual MOTOROLA JTAG Port DSP56305 Boundary Scan Register ...
Page 431: ...Filter Co Processor MOTOROLA DSP56305 User s Manual 12 1 SECTION 12 FILTER CO PROCESSOR ...
Page 471: ...VITERBI CO PROCESSOR MOTOROLA DSP56305 User s Manual 13 1 SECTION 13 VITERBI CO PROCESSOR ...
Page 522: ...13 52 DSP56305 User s Manual MOTOROLA VITERBI CO PROCESSOR References ...
Page 554: ...14 32 DSP56305 User s Manual MOTOROLA CYCLIC CODE CO PROCESSOR Configuration Examples ...
Page 555: ...MOTOROLA DSP56305 User s Manual A 1 APPENDIX A BOOTSTRAP CODE ...
Page 568: ...A 14 DSP56305 User s Manual MOTOROLA Bootstrap Code ...
Page 569: ...Equates MOTOROLA DSP56305 User s Manual B 1 APPENDIX B EQUATES ...
Page 589: ...MOTOROLA DSP56305 User s Manual C 1 APPENDIX C JTAG BSDL ...
Page 590: ...C 2 DSP56305 User s Manual MOTOROLA JTAG BSDL ...
Page 600: ...C 12 DSP56305 User s Manual MOTOROLA JTAG BSDL ...
Page 601: ...MOTOROLA DSP56305 User s Manual D 1 APPENDIX D PROGRAMMING REFERENCE ...
Page 602: ...D 2 DSP56305 User s Manual MOTOROLA PROGRAMMING REFERENCE ...
Page 661: ...Y MOTOROLA DSP56305 User s Manual Index 11 ...
Page 662: ...Y Index 12 DSP56305 User s Manual MOTOROLA ...