14-14
DSP56305 User’s Manual
MOTOROLA
CYCLIC CODE CO-PROCESSOR
CCOP Programming Model
When CCOP operates in the Parity Coding Mode Using One CFSR (OPM[1:0] = 10 in
CCSR), INE[3:1] are not applicable since only CFSRA is active (the remaining CFSRs are
disabled). INE0 is used to enable (INE0 = 1) or disable (INE0 = 0) data input to the
feedback path of the active CFSR. Data input to the feedforward path is always enabled
and is not affected by INEx bits.
When CCOP operates in the Parity Coding Mode Using Two Concatenated CFSRs
(OPM[1:0] = 11 in CCSR), INE[3:2] are not applicable since only CFSRA and CFSRB are
active while CFSRC and CFSRD are disabled. In this mode INE0 must be equal to INE1
for proper operation of the concatenated scheme. INE0 = INE1 = 1 enables the input data
bit to the feedback path of the concatenated CFSR. INE0 = INE1 = 0 disables the input
data bit to the feedback path of the concatenated CFSR. The input data to the
feedforward path is always enabled and not affected by INEx.
14.4.3.5
Output Enable bits (OUTE[3:0])—CSFTB Bits 23–20
The Output Enable bits (OUTE[3:0]) are used to enable output from CFSR[D:A]
respectively during the output phase. When OUTEx is cleared, the output bit from
CFSRz is gated, so it does not affect the final output data bit (generated by XORing all
enabled output bits from the CFSRs). When OUTEx bit is set, the output bit from CFSRz
is enabled, and it is XORed together with other CFSR enabled output bits to form the
output data bit that goes to the output buffer.
14.4.4
CCOP Control Status Register (CCSR)
The CCOP Control Status Register (CCSR) is a 24-bit read/write register used to control
and interrogate the operation of the CCOP. The CCSR bits are shown in Figure 14-8 and
are described in the following paragraphs. Control bits in the CCSR should not be
changed while the CCOP is operating, except for the interrupt enable bits, otherwise
improper operation may result. The control bits OPM[1:0] and LRC (which select the
CFSR configuration) should only be changed when CCOP is in the CCOP individual
Table 14-3
INE[3:0], OUTE[3:0] Bits and their Respective CFSRs
Bit Number
Register Letter
0
A
1
B
2
C
3
D
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 ...