Multichannel Operation - Analog Devices ADSP-BF506F Hardware Reference Manual

RFS
RSCLK
MSB
DRPRI
RFS
RSCLK
MSB
DRPRI
RFS
RSCLK
DRPRI MSB
Figure 19-5. SPORT Stereo Serial Modes, Receive
1 DSP mode does not identify channel.
2 RFS normally operates at f
3 RSCLK frequency is normally 64 × RFS but may be operated in burst mode.

Multichannel Operation

The SPORT offers a multichannel mode of operation which allows the
SPORT to communicate in a time-division-multiplexed (TDM) serial sys-
tem. In multichannel communications, each data word of the serial
bitstream occupies a separate channel. Each word belongs to the next con-
secutive channel so that, for example, a 24-word block of data contains
one word for each of 24 channels.
The SPORT can automatically select words for particular channels while
ignoring the others. Up to 128 channels are available for transmitting or
receiving; each SPORT can receive and transmit data selectively from any
of the 128 channels. These 128 channels can be any 128 out of the 1024
ADSP-BF50x Blackfin Processor Hardware Reference
LEFT CHANNEL
LSB
LEFT-JUSTIFIED MODE—3 TO 32 BITS PER CHANNEL
LEFT CHANNEL
LSB
I 2 S MODE—3 TO 32 BITS PER CHANNEL
LSB
DSP MODE—3 TO 32 BITS PER CHANNEL
except for DSP mode which is 2 x f
S
RIGHT CHANNEL
MSB
RIGHT CHANNEL
MSB
MSB
1/f
S
1, 2, 3
.
S
SPORT Controller
LSB
LSB
LSB
19-15