Motorola DSP56367 User Manual page 295

Table 10-18. Bit number N in RSM (RS**) is an enable/disable control bit for receiving data
in slot number N.
11
X:$FFFFBB RS11
23
11
X:$FFFFBC RS27
23
When bit number N in the RSM register is cleared, the data from the enabled receivers input
pins are shifted into their receive shift registers during slot number N. The data is not
transferred from the receive shift registers to the receive data registers, and neither the RDF
nor the ROE flags are set. This means that during a disabled slot, no receiver full interrupt is
generated. The DSP is interrupted only for enabled slots.
When bit number N in the RSM is set, the receive sequence is as usual: data which is shifted
into the enabled receivers shift registers is transferred to the receive data registers and the
RDF flag is set.
Data written to the RSM affects the next received frame. The frame being received is not
affected by this data and would comply to the last RSM setting. Data read from RSM returns
the last written data.
MOTOROLA
10 9 8 7
RS10 RS9 RS8 RS7
22 21 20 19
Reserved bit - read as zero; should be written with zero for future compatibility.
Figure 10-17 RSMA Register
10 9 8 7
RS26 RS25 RS24 RS23
22 21 20 19
Reserved bit - read as zero; should be written with zero for future compatibility.
Figure 10-18 RSMB Register
DSP56367
Enhanced Serial Audio Interface (ESAI)
ESAI Programming Model
6 5 4 3
RS6 RS5 RS4 RS3
18 17 16 15
RS15
6 5 4 3
RS22 RS21 RS20 RS19
18 17 16 15
RS31
2 1 0
RS2 RS1 RS0
14 13 12
RS14 RS13 RS12
2 1 0
RS18 RS17 RS16
14 13 12
RS30 RS29 RS28
10-47