Enhanced Serial Audio Interface (ESAI)
ESAI Programming Model
MOTOROLA
DSP56367
10-19
2. If the data word is right-aligned (TWA=1), and zero padding is disabled (PADC=0),
then the first data bit is repeated before the transmission of the data word. If zero
padding is enabled (PADC=1), zeroes are transmitted before the transmission of the
data word.
10.3.2.9
TCR Transmit Network Mode Control (TMOD1-TMOD0) - Bits 8-9
The TMOD1 and TMOD0 bits are used to define the network mode of ESAI transmitters
according to Table 10-4. In the normal mode, the frame rate divider determines the word
transfer rate – one word is transferred per frame sync during the frame sync time slot, as
shown in Figure 10-6. In network mode, it is possible to transfer a word for every time slot, as
shown in Figure 10-6. For more details, see Section 10.4, “Operating Modes”.
In order to comply with AC-97 specifications, TSWS4-TSWS0 should be set to 00011 (20-bit
slot, 20-bit word length), TFSL and TFSR should be cleared, and TDC4-TDC0 should be set
to $0C (13 words in frame). If TMOD[1:0]=$11 and the above recommendations are
followed, the first slot and word will be 16 bits long, and the next 12 slots and words will be
20 bits long, as required by the AC97 protocol.
Table 10-4 Transmit Network Mode Selection
TMOD1
TMOD0
TDC4-TDC0
Transmitter Network Mode
0
0
$0-$1F
Normal Mode
0
1
$0
On-Demand Mode
0
1
$1-$1F
Network Mode
1
0
X
Reserved
1
1
$0C
AC97
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: ......