User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 363 of 909 2019 Ambiq Micro, Inc.
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Figure 59. I
2
S Interface Data Format Timing
Figure 60. I
2
S Interface Setup and Hold Timing Diagram
10.4 PDM Registers
PDM Audio
INSTANCE 0 BASE ADDRESS:0x50011000
I2S_WDCLK
I2S_BCLK
I2S_DAT
LeftChannel(Low) RightChannel(High)
1 2 n‐1 n
1 2 n‐1 n
1 2
MSB
MSB MSBLSB
LSB
1/Fs
I
H‐LRC
I
S‐LRC
T
D_DAT
I2S_WDCLK
I2S_BCLK
I2S_DAT