4117529
Rev 1.0
June 12, 2015
13
4. Audio Interface
The MC7354B supports a PCM/I
2
S digital audio interface using a dedicated serial link for digital audio
data; all other signals, such as subcoding and control, are transmitted separately. The audio interface
can be switched from PCM to I
2
S and vice versa via AT commands.
Table 5.
Audio Pin Description
Signal Name
Pin
Description
PCM_CLK/I2S_CLK
45
PCM Clock/I
2
S Clock
PCM_DOUT/I2S_DOUT 47
PCM Data Out/I
2
S Data Out
PCM_DIN/I2S_DIN
49
PCM Data In/I
2
S Data In
PCM_SYNC/I2S_WS
51
PCM SYNC/I
2
S WS
