Datasheet

Digital Audio Interface
1-10 ADSP-21262 EZ-KIT Lite Evaluation System Manual
page 2-9. The four output channels connect to the RCA connector
J5.
Channel 4 of the codec connects to the headphone jack J6. For more
information about the connectors, see “Connectors” on page 2-17.
Example programs are included in the EZ-KIT installation directory to
demonstrate how to configure and use the board’s analog audio interface.
Digital Audio Interface
The CS8416 is a monolithic complementary metal oxide semiconductor
(CMOS) device which receives and decodes one of eight channels of audio
data according to 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 S/PDIF receiver are programmed via an SPI, which is
connected to the processor’s SPI. The S/PDIF 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 2-5.
The S/PDIF input signal is input on J8 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 2-10 for how to).
The CS8416 genera- purpose output 1 (
GPO1) is connected to LED11, and
can be configured, via the SPI, to indicate a variety of conditions within
the S/PDIF receiver.