VITERBI CO-PROCESSOR
Programming Model
MOTOROLA
DSP56305 User’s Manual
13-21
13.5.4
Viterbi Control Register B (VCRB)
The Viterbi Control Register B (VCRB) is a 16-bit read/write control register used by the
DSP56300 core to control the enabling of the interrupts generated by the module and the
operation modes of the module. The VCRB bits are described in the following
paragraphs. All VCRB bits are cleared after hardware and software reset.
13.5.4.1
Initial State Enable (ISE)—VCRB Bit 0
The Initial State Enable bit (ISE) controls the decoder starting path metric values. When
ISE is set, the state defined by the IS[5:0] bits in the VTSR is initialized to an initial value
of 2
19
, while the rest of the states are initialized to zero. When ISE is cleared, all trellis
states path metrics are initialized to zero.
13.5.4.2
Flush Control (FLC)—VCRB Bit 1
The Flush Control bit (FLC) controls the Flush Mode of operation by determining which
ending state to flush to, as defined in Table 13-4.
13.5.4.3
Continuous Mode Enable (CME)—VCRB Bit 3
The Continuous Mode Enable (CME) bit enables the VCOP to operate continuously.
When CME is cleared, the VCOP operates on data blocks of length defined in the VCNT
register. When CME is set, the VCNT contents are ignored and the VCOP operates
continuously upon receiving new data words. When CME is set, the flush operation
does not take place as part of the decoding and equalization process, and bits ENCEN,
Figure 13-10
Viterbi Control Register B (VCRB)
Table 13-4
Flush Modes
FLC
Flush operation flushes the path
0
with the maximal path metric value
1
defined by the End State (ES[5:0]) bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
OCIE DNIE DOIE BFIE
DIIE
WEDE
CME
FLC
ISE
Reserved bit, Read as zero, should be written with zero for future compatibility
Reserved for internal use. Should be written with zero for proper operation.
AA1319
Содержание DSP56305
Страница 34: ...xxxii DSP56305 User s Manual MOTOROLA ...
Страница 40: ...xxxvi DSP56305 User s Manual MOTOROLA ...
Страница 41: ...MOTOROLA DSP56305 User s Manual 1 1 SECTION 1 DSP56305 OVERVIEW ...
Страница 58: ...1 18 DSP56305 User s Manual MOTOROLA DSP56305 Overview DSP56305 Architecture Overview ...
Страница 59: ...MOTOROLA DSP56305 User s Manual 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Страница 98: ...2 40 DSP56305 User s Manual MOTOROLA Signal Connection Descriptions JTAG OnCE Interface ...
Страница 99: ...MOTOROLA DSP56305 User s Manual 3 1 SECTION 3 MEMORY CONFIGURATION ...
Страница 119: ...MOTOROLA DSP56305 User s Manual 4 1 SECTION 4 CORE CONFIGURATION ...
Страница 144: ...4 26 DSP56305 User s Manual MOTOROLA Core Configuration JTAG Boundary Scan Register BSR ...
Страница 145: ...MOTOROLA DSP56305 User s Manual 5 1 SECTION 5 GENERAL PURPOSE I O ...
Страница 146: ...5 2 DSP56305 User s Manual MOTOROLA General Purpose I O 5 1 Introduction 5 3 5 2 Programming Model 5 3 ...
Страница 149: ...HOST INTERFACE HI32 MOTOROLA DSP56305 User s Manual 6 1 SECTION 6 HOST INTERFACE HI32 ...
Страница 150: ...6 2 DSP56305 User s Manual MOTOROLA HOST INTERFACE HI32 ...
Страница 258: ...6 110 DSP56305 User s Manual MOTOROLA HOST INTERFACE HI32 EXAMPLES OF HOST TO HI32 CONNECTIONS ...
Страница 259: ...MOTOROLA DSP56305 User s Manual 7 1 SECTION 7 ENHANCED SYNCHRONOUS SERIAL INTERFACE ESSI ...
Страница 314: ...7 56 DSP56305 User s Manual MOTOROLA Enhanced Synchronous Serial Interface ESSI GPIO ESSI Selection and GPIO Usage ...
Страница 315: ...MOTOROLA DSP56305 User s Manual 8 1 SECTION 8 SERIAL COMMUNICATION INTERFACE SCI ...
Страница 346: ...8 32 DSP56305 User s Manual MOTOROLA Serial Communication Interface SCI GPIO Signals and Registers ...
Страница 347: ...MOTOROLA DSP56305 User s Manual 9 1 SECTION 9 TIMER EVENT COUNTER ...
Страница 376: ...9 30 DSP56305 User s Manual MOTOROLA Timer Event Counter Timer Modes of Operation ...
Страница 377: ...MOTOROLA DSP56305 User s Manual 10 1 SECTION 10 ON CHIP EMULATION MODULE ...
Страница 410: ...10 34 DSP56305 User s Manual MOTOROLA On Chip Emulation Module Examples of JTAG and OnCE interaction ...
Страница 411: ...MOTOROLA DSP56305 User s Manual 11 1 SECTION 11 JTAG PORT ...
Страница 430: ...11 20 DSP56305 User s Manual MOTOROLA JTAG Port DSP56305 Boundary Scan Register ...
Страница 431: ...Filter Co Processor MOTOROLA DSP56305 User s Manual 12 1 SECTION 12 FILTER CO PROCESSOR ...
Страница 471: ...VITERBI CO PROCESSOR MOTOROLA DSP56305 User s Manual 13 1 SECTION 13 VITERBI CO PROCESSOR ...
Страница 520: ...13 50 DSP56305 User s Manual MOTOROLA VITERBI CO PROCESSOR Programming Examples dc 05d900 dc 000000 dc 000000 ...
Страница 522: ...13 52 DSP56305 User s Manual MOTOROLA VITERBI CO PROCESSOR References ...
Страница 523: ...CYCLIC CODE CO PROCESSOR MOTOROLA DSP56305 User s Manual 14 1 SECTION 14 CYCLIC CODE CO PROCESSOR ...
Страница 554: ...14 32 DSP56305 User s Manual MOTOROLA CYCLIC CODE CO PROCESSOR Configuration Examples ...
Страница 555: ...MOTOROLA DSP56305 User s Manual A 1 APPENDIX A BOOTSTRAP CODE ...
Страница 568: ...A 14 DSP56305 User s Manual MOTOROLA Bootstrap Code ...
Страница 569: ...Equates MOTOROLA DSP56305 User s Manual B 1 APPENDIX B EQUATES ...
Страница 570: ...B 2 DSP56305 User s Manual MOTOROLA Equates B 1 Internal I 0 Equates B 3 B 2 Interrupt Equates B 18 ...
Страница 589: ...MOTOROLA DSP56305 User s Manual C 1 APPENDIX C JTAG BSDL ...
Страница 590: ...C 2 DSP56305 User s Manual MOTOROLA JTAG BSDL ...
Страница 600: ...C 12 DSP56305 User s Manual MOTOROLA JTAG BSDL ...
Страница 601: ...MOTOROLA DSP56305 User s Manual D 1 APPENDIX D PROGRAMMING REFERENCE ...
Страница 602: ...D 2 DSP56305 User s Manual MOTOROLA PROGRAMMING REFERENCE ...
Страница 661: ...Y MOTOROLA DSP56305 User s Manual Index 11 ...
Страница 662: ...Y Index 12 DSP56305 User s Manual MOTOROLA ...
Страница 663: ...Y MOTOROLA DSP56305 User s Manual Index 13 ...
Страница 664: ...Y Index 14 DSP56305 User s Manual MOTOROLA ...