Rcr Receiver Frame Sync Length (Rfsl) - Bit 15; Rcr Receiver Frame Sync Relative Timing (Rfsr) - Bit 16; Rcr Receiver Section Personal Reset (Rpr) - Bit 19 - Freescale Semiconductor DSP56374 User Manual

ESAI Programming Model
Table 8-11. ESAI Receive Slot and Word Length Selection (continued)
RSWS4 RSWS3
1 0
0 1
0 1
0 0
1 1
1 1
1 0
1 0
0 1
1 1
0 1
0 1
1 0
1 0
1 0
1 0
1 0
1 1
1 1
1 1
1 1
1 1
8.3.4.10

RCR Receiver Frame Sync Length (RFSL) - Bit 15

The RFSL bit selects the length of the receive frame sync to be generated or recognized. If RFSL is cleared, a word-length frame sync is
selected. If RFSL is set, a 1-bit clock period frame sync is selected. See
8.3.4.11

RCR Receiver Frame Sync Relative Timing (RFSR) - Bit 16

RFSR determines the relative timing of the receive frame sync signal as referred to the serial data lines, for a word length frame sync only.
When RFSR is cleared the word length frame sync occurs together with the first bit of the data word of the first slot. When RFSR is set the
word length frame sync starts one serial clock cycle earlier, i.e., together with the last bit of the previous data word.
8.3.4.12

RCR Receiver Section Personal Reset (RPR) - Bit 19

The RPR control bit is used to put the receiver section of the ESAI in the personal reset state. The transmitter section is not affected. When
RPR is cleared, the receiver section may operate normally. When RPR is set, the receiver section enters the personal reset state immediately.
When in the personal reset state, the status bits are reset to the same state as after hardware reset.The control bits are not affected by the
personal reset state.The receiver data pins are disconnected while in the personal reset state. Note that to leave the personal reset state by
clearing RPR, the procedure described in
8-22
RSWS2 RSWS1 RSWS0
0 0 0
1 0 1
0 1 0
1 1 1
1 1 0
0 0 0
1 0 1
0 1 0
1 1 1
1 1 1
0 1 1
1 1 0
0 0 1
0 1 1
1 0 0
1 1 0
1 1 1
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
Figure 8-7
Section 8.6, ESAI Initialization Examples
DSP56374 Users Guide, Rev. 1.2
SLOT LENGTH WORD LENGTH
24
12
16
20
24
32
12
16
20
24
Reserved
for examples of frame length selection.
should be followed.
Freescale Semiconductor
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