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2-4 ADSP-21369 EZ-KIT Lite Evaluation System Manual
DAI Interface
The pins of the digital application interface (DAI) connect to the signal
routing unit (SRU). The SRU is a flexible routing system, providing a
large system of signal flows within the processor. In general, the SRU
allows to route the DAI pins to different internal peripherals in various
combinations.
The DAI pins connect to the AD1835A audio codec, a 26-pin header, two
RCA connectors, the audio oscillator output, an external phase lock loop
(PLL) circuit, two LEDs, and two push buttons. Figure 2-2 illustrates the
EZ-KIT Lite’s connections to the DAI.
Figure 2-2. DAI Connections Block Diagram
PB_3
PB_4
4x2
RCA
Phono
Jack
OUT
Head-
phone
Jack
1X2
RCA
Phono
Jack IN
12.288M H z
AD1835
DAC_LRCLK
DAC_BCLK
DAC_SDATA1
DAC_SDATA2
DAC_SDATA3
DAC_SDATA4
ADC_LRCLK
ADC_BCLK
ADC_ SD AT A 1
MCLK
ADC
DAC1
DAC2
DAC3
DAC4
DSP
DAI1 (SD0A)
DAI2 (SD0B)
DAI3 (SCLK0)
DAI4 (SFS0)
DAI6 (SD1B)
DAI5 (SD1A)
DAI7 (SCLK1)
DAI8 (SFS1)
DAI9 (SD2A)
DAI10 ( SD2B)
DAI11 ( SD3A)
DAI12 ( SD3B)
DAI15 ( SD4A)
DAI16 ( SD4B)
DAI17 ( SD5A)
DAI18 ( SD5B)
DAI20 ( SFS45)
DAI14 ( SFS23)
DAI13 ( SCLK23)
DAI19 ( SCLK45)
AUDIO OSC
SPDIF IN
LED7
LED6
EL VIS_TR IG
PLLMCLK IN
PLLMCLK O UT
SPDIF OUT
DAIP17