ADSP-21262 EZ-KIT Lite Evaluation System Manual
2-5
Using EZ-KIT Lite
Using Digital Audio
The CS8416 is a monolithic CMOS device which receives and decodes
one of eight channels of audio data according to the IEC60958, S/PDIF,
EIAJ CP1201, or AES3 interface standards. The CS8416 receives data
from a transmission line, recovers the clock and synchronization signals,
and de-multiplexes the audio and digital data.
The CS8416 is attached to the DAI port of the processor. The configura-
tion registers of the SPDIF receiver are programmed via an SPI, which is
connected to the processor’s SPI. The SPDIF receiver is capable of trans-
mitting a variety of data formats, which are set up via the SPI interface.
For more information about the CS8416 and DAI connection, see
“DAI
Interface” on page 3-4
.
The SPDIF input signal is input on
P1
via a coax connector.
To output the audio received by the CS8416 via the AD1835A audio
codec, the master clock of both chips must be synchronized to prevent the
loss of samples. Put the AD1835A in slave mode and disconnect the
12.288 MHz oscillator from the master clock (MCLK) input (see
“Codec
Setup Switch (SW7)” on page 3-9
for how to).
The CS8416 general purpose output 1 (
GPO1
) is connected to
LED11
, and
can be configured, via the SPI, to indicate a variety of conditions within
the SPDIF receiver.
Shipped with the kit example programs demonstrate how to configure and
use the board’s digital audio interface.
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