Figure 5: Onboard Digital Audio Source Section
Section 3 – I2C Section:
The SSM2529 can operate with or without I2C control. If it is desired to evaluate the part in Stand Alone mode,
simply insert a jumper across the SAMOD and DVDD terminals of J21. To put the part into I2C mode, insert a jumper
across the SAMOD and GND terminals of J21.
Stand Alone Mode Operation: Please refer to Table 1 for the functionality available while in Stand Alone mode.
Normal Op Pin
SA_MODE=1
SCL
Volume Control A
SDA
Volume Control B
STDNb
0 – Shutdown/Mute
1 – Normal Operation
ADDR
1 – PDM
BCLK
0 –
16 BCLK Cycles provide
by PLL
1 –
32 BCLK Cycles provide
by PLL
clock
–
32
BCLK
Cycles
provide off-chip
MCLK
0 – I2S
1 – PCM
Table 1: Stand Alone Mode Settings