Inter-Ic Sound (Iis) Timing; Mcbsp Receive/Transmit Frame Length 1/2 Configuration - Texas Instruments TMS320C6201 Reference Manual

Figure 11–9.Inter-IC Sound (IIS) Timing
CLK(R/X)
FS(R/X)
D(R/X)
11.3.4.4 Frame Length: (R/X)FRLEN(1/2)
Table 11–10. McBSP Receive/Transmit Frame Length 1/2 Configuration
(R/X)PHASE (R/X)FRLEN1
0 0
1 0
FWID
B7 B6 B5 B2
Frame length can be defined as the number of serial elements transferred per
frame. The length corresponds to the number of elements or logical time slots or
channels per frame synchronization signal. The 7-bit (R/X)FRLEN(1/2) field in the
(R/X)CR supports up to 128 elements per frame, as shown in Table 11–10.
(R/X)PHASE = 0 selects a single-phase data frame, and (R/X)PHASE = 1 selects
a dual-phase frame for the data stream. For a single-phase frame, the value of
FRLEN2 does not matter. Program the frame length fields with ( w minus 1),
where w represents the number of elements per frame. For Figure 11–8,
(R/X)FRLEN1 = 1 or 0000001b and (R/X)FRLEN2 = 2 or 0000010b.
(R/X)FRLEN2
n 127 x
n 127 0 m
Phase 1
FPER
B1 B0
Frame Length
Single-phase frame; (n+1) words per frame
127 Dual-phase frame; (n+1) plus (m+1) words per frame
Multichannel Buffered Serial Ports
Data Transmission and Reception
Phase 2
C15 C14 C0
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