Rainbow Electronics MAX98088 - Manual (Page 72)

Stereo Audio Codec
with FLEXSOUND Technology
MAX98088
72
ADC Record Level Control
The IC includes separate digital level control for the left
and right ADC outputs (Figure 13). To optimize dynamic
range, use analog gain to adjust the signal level and set
the digital level control to 0dB whenever possible. Digital
level control is primarily used when adjusting the record
level for digital microphones.
Figure 12. AGC Timing
Figure 13. ADC Record Level Control Block Diagram
ATTACK TIME HOLD TIME RELEASE TIME
ADREN
ADLEN
ADCR
ADCL
AUTOMATIC
GAIN
CONTROL
NOISE GATE
MODE1
AVFLT
SRMIX_
MODE
AVLG: 0/6/
12/18dB
AVL:0dB
TO -15dB
AVRG: 0/6/
12/18dB
AVR:0dB
TO -15dB
AUDIO/
VOICE
FILTERS
SAMPLE RATE
CONVERTER