Esai_1 Multiplex Control Register (Emuxr) - Motorola DSP56367 User Manual

Enhanced Serial Audio Interface 1 (ESAI_1)
ESAI_1 Programming Model
11.3.1

ESAI_1 MULTIPLEX CONTROL REGISTER (EMUXR)

The read/write ESAI_1 Multiplex Control Register (EMUXR) controls which peripheral
(ESAI or ESAI_1) is using the shared pins.
11
Y:$FFFFAF
23
Hardware and software reset clear all the bits of the EMUXR register. The selection of
ESAI/ESAI_1 pins is shown in Table 11-1.
Table 11-1 EMUXR ESAI/ESAI_1 Pin Selection
EMUXR bit
EMUX0 0
EMUX0 1
EMUX1 0
EMUX1 1
EMUX2 0
EMUX2 1
EMUX3 0
EMUX3 1
11.3.2 ESAI_1 TRANSMITTER CLOCK CONTROL REGISTER
(TCCR_1)
The read/write Transmitter Clock Control Register (TCCR_1) controls the ESAI_1
transmitter clock generator bit and frame sync rates, the bit rate and high frequency clock
sources and the directions of the FST_1 and SCKT_1 signals. In synchronous mode, the bit
clock defined for the transmitter determines the receiver bit clock as well. TCCR_1 also
controls the number of words per frame for the serial data.
11-6
10 9 8 7
22 21 20 19
Reserved bit - read as zero; should be written with zero for future compatibility.
Figure 11-2 EMUXR Register
ESAI pin
SDO0 [PC11]
disconnected
SDO1[PC10]
disconnected
SDO2/SDI3 [PC9]
disconnected
SDO3/SDI2 [PC8]
disconnected
DSP56367
6 5 4 3
EMUX3 EMUX2 EMUX1 EMUX0
18 17 16 15
ESAI_1 pin
disconnected
SDO0_1 [PE11]
disconnected
SDO1_1 [PE10]
disconnected
SDO2_1/SDI3_1 [PE9]
disconnected
SDO3_1/SDI2_1 [PE8]
2 1 0
14 13 12
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