Enhanced Serial Audio Interface (ESAI)
ESAI Programming Model
MOTOROLA
DSP56367
10-17
state. The on-demand mode transmit enable sequence can be the same as the normal mode, or
TE2 can be left enabled.
10.3.2.4
TCR ESAI Transmit 3 Enable (TE3) - Bit 3
TE3 enables the transfer of data from TX3 to the transmit shift register #3. When TE3 is set
and a frame sync is detected, the transmit #3 portion of the ESAI is enabled for that frame.
When TE3 is cleared, the transmitter #3 is disabled after completing transmission of data
currently in the ESAI transmit shift register. Data can be written to TX3 when TE3 is cleared
but the data is not transferred to the transmit shift register #3.
The SDO3/SDI2 pin is the data input pin for RX2 if TE3 is cleared and RE2 in the RCR
register is set. If both RE2 and TE3 are cleared the transmitter and receiver are disabled, and
the pin is tri-stated. Both RE2 and TE3 should not be set at the same time.
The normal mode transmit enable sequence is to write data to one or more transmit data
registers before setting TEx. The normal transmit disable sequence is to clear TEx, TIE and
TEIE after TDE equals one.
In the network mode, the operation of clearing TE3 and setting it again disables the
transmitter #3 after completing transmission of the current data word until the beginning of
the next frame. During that time period, the SDO3/SDI2 pin remains in the high-impedance
state. The on-demand mode transmit enable sequence can be the same as the normal mode, or
TE3 can be left enabled.
10.3.2.5
TCR ESAI Transmit 4 Enable (TE4) - Bit 4
TE4 enables the transfer of data from TX4 to the transmit shift register #4. When TE4 is set
and a frame sync is detected, the transmit #4 portion of the ESAI is enabled for that frame.
When TE4 is cleared, the transmitter #4 is disabled after completing transmission of data
currently in the ESAI transmit shift register. Data can be written to TX4 when TE4 is cleared
but the data is not transferred to the transmit shift register #4.
The SDO4/SDI1 pin is the data input pin for RX1 if TE4 is cleared and RE1 in the RCR
register is set. If both RE1 and TE4 are cleared the transmitter and receiver are disabled, and
the pin is tri-stated. Both RE1 and TE4 should not be set at the same time.
The normal mode transmit enable sequence is to write data to one or more transmit data
registers before setting TEx. The normal transmit disable sequence is to clear TEx, TIE and
TEIE after TDE equals one.
In the network mode, the operation of clearing TE4 and setting it again disables the
transmitter #4 after completing transmission of the current data word until the beginning of
the next frame. During that time period, the SDO4/SDI1 pin remains in the high-impedance
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: ......