Product Info

Automotive Module Series
AG35 Hardware Design
AG35_Hardware_Design 55 / 129
SPK2_N
133
AO
Earphone analog output 2 (-)
SPK1_P
134
AO
Earphone analog output 1 (+)
SPK1_N
135
AO
Earphone analog output 1 (-)
MICBIAS
136
AO
Bias voltage output for
microphone
MIC2_N
137
AI
Microphone analog input 2 (-)
MIC2_P
138
AI
Microphone analog input 2 (+)
MIC1_N
139
AI
Microphone analog input 1 (-)
MIC1_P
140
AI
Microphone analog input 1 (+)
AGND
141
Analog ground
Table 17: Audio Interface Characteristics
Parameter
Condition
Min
Typ.
Max
Unit
MIC1_P/N
Full-Scale Input
AV
LINE
=0dB
f =1kHz
1.0
Vp-p
Noise
AV
LINE
=0dB
f =1kHz
-80
dB
SPK1_P/N
Max power output
Differential mode
R
L
=32Ω
f =1kHz
462.5
mV
THD+N
Output Gain=0dB
f =1kHz
0.28%
1. The built-in codec uses the same signals as the module’s PCM interface (pins 65~68) for external
digital audio design. Therefore, when the built-in codec is utilized, the PCM interface cannot be used
for other purposes (that is, keep pins 65~68 unconnected or set the interface to high impedance
state).
2. The built-in audio codec (analog audio function) is optional.
3. MOS ≥ 3.8.
NOTES