wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 69

• Manufacturer Part Number: wm8352
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
IN2L
INR2
right microphone
13.4.7
The WM8352 has mixers in the input signal paths. This allows each ADC to record either a single
input signal or a mix of several signals, as desired. The gain for the different input signals can also
be adjusted. Each input mixer has four inputs:
•
•
•
•
Figure 39 Input Mixers
left microphone
IN3R amplifier
IN3L amplifier
pre-amplifier
pre-amplifier
OUT4 mixer
Output from
Output from
Output from
Output from
Output from
the output of the respective (left/right) microphone pre-amplifier
the IN2L and IN2R pins (used as a line input, bypassing the microphone pre-amplifiers)
the output of the respective (left/right) auxiliary input buffer (ie. inputs IN3L or IN3R)
the output of the OUT4 amplifier (only one input mixer at a time can take this signal)
INPUT MIXERS
OUT4_MIXIN_VOL, R100[3:1]
-12dB to + 6dB,
-12dB to + 6dB
-12dB to + 6dB,
-12dB to + 6dB
-12dB to + 6dB
and mute
0dB or +20dB
and mute
and mute
and mute
and mute
0dB or +20dB
IN3R_MIXINR_VOL, R99[15:13]
INL_MIXINL_VOL, R98[0]
IN3L_MIXINL_VOL, R98[11:9]
INR2_MIXINR_VOL, R99[7:5]
IN2L_MIXINL_VOL, R98[3:1]
INR_MIXINR_VOL, R99[0]
OUT4_MIXIN_DST,
R100[15]
-1
-1
Left ADC input
OUT3 mixer
Right ADC input
OUT4 mixer
PD, June 2009, Rev 4.1
WM8352
69