Dai Interface - Analog Devices Lite ADSP-21375 EZ-KIT System Manual

System Architecture

DAI Interface

2-4
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The digital application interface (DAI) pins are connected to the signal
routing unit (SRU) of the processor. The SRU is a flexible routing system,
providing a large system of signal flows within the processor. In general,
the SRU can route the DAI pins to different internal peripherals in vari-
ous combinations.
The DAI pins are connected to the AD1835A audio codec, a 26-pin
header, two RCA connectors, audio oscillator output, an external phase
lock loop (PLL) circuit, two LEDs, and two push buttons.
illustrates the EZ-KIT Lite's connections to the DAI interface.
PB_4
DAI20 (SFS45)
PB_3
DAI19 (SCLK45)
DAI18 (SD5B) SPDIF IN
DAI17 (SD5A)
AUDIO OSC
DAI16 (SD4B) LED7
DAI15 (SD4A) LED6
DAI14 (SFS23)
DAI13 (SCLK23)
DAI12 (SD3B)
DAI11 (SD3A)
DAI10 (SD2B)
DAI9 (SD2A)
DAI8 (SFS1)
DAI7 (SCLK1)
DAI5 (SD1A)
DAI6 (SD1B)
ELVIS_TRIG
DAI4 (SFS0)
PLLMCLK IN
DAI3 (SCLK0)
PLLMCLK OUT
DAI2 (SD0B)
SPDIF OUT
DAI1 (SD0A)
DSP
Figure 2-2. DAI Connections Block Diagram
ADSP-21375 EZ-KIT Lite Evaluation System Manual
Figure 2-2
DAC_LRCLK DAC1
DAC_BCLK DAC2
Phono
DAC_SDATA1 DAC3
DAC_SDATA2 DAC4
DAC_SDATA3
DAC_SDATA4 Head-
phone
AD1835
ADC_LRCLK ADC
ADC_BCLK
ADC_SDATA1
MCLK
12.288MHz
4x2
RCA
Jack
OUT
Jack
1X2
RCA
Phono
Jack IN