12-10
DSP56367
MOTOROLA
Digital Audio Transmitter
DAX Internal Architecture
Figure 12-3 DAX Relative Timing
12.5.7.4
XSTR Reserved Bits—Bits 3–23
These XSTR bits are reserved. They read as 0, and should be written with 0 to ensure
compatibility with future device versions.
12.5.8
DAX PARITY GENERATOR (PRTYG)
The PRTYG generates the parity bit for the subframe being transmitted. The generated parity
bit ensures that subframe bits four to thirty-one will carry an even number of ones and zeroes.
12.5.9
DAX BIPHASE ENCODER
The DAX biphase encoder encodes each audio and non-audio bit into its biphase mark format
and shifts this encoded data out to the ADO output pin synchronously to the biphase clock.
12.5.10
DAX PREAMBLE GENERATOR
The DAX preamble generator automatically generates one of three preambles in the 8-bit
preamble shift register at the beginning of each subframe transmission, and shifts it out. The
generated preambles always start with “0”. Bit patterns of preambles generated in the
#000 #001
#008
#007
#006
#005
#004
#003
#002
#009 #010
#021
#011
#018
#017
#016
#015
#014
#013
#012
#019 #020
#022 #023
#024 #025
#032
#031
#030
#029
#028
#027
#026
#033 #034
#045
#035
#042
#041
#040
#039
#038
#037
#036
#043 #044
#046 #047
XADE
XBLK
Frame
XADE
XBLK
Frame
XADE
XBLK
Frame
#168 #169
#176
#175
#174
#173
#172
#171
#170
#177 #178
#189
#179
#186
#185
#184
#183
#182
#181
#180
#187 #188
#190 #191
AA0608
Summary of Contents for DSP56367
Page 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
Page 26: ...xxvi MOTOROLA List of Tables Table Number Title Page Number ...
Page 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Page 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Page 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Page 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Page 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Page 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Page 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Page 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Page 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Page 522: ...Index 6 MOTOROLA Index ...
Page 523: ......