ak4141 AKM Semiconductor, Inc., ak4141 Datasheet - Page 22

• Manufacturer Part Number: ak4141
• Description: Nicam/a2/eia-j Digital Stereo Decoder
• Manufacturer: AKM Semiconductor, Inc.

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The digital block consists of block diagram as shown in
(1) Stereo Separation: Digital Separation Emphasis Filter (See “Digital Programmable Filter Circuit”)
(2) Gain Compensation: Composed of the Equalizer (EQ0) and the Gain (0bB/+12dB/+24dB). Compensate the
(3) 5-Band Notch: Applicable to use as Equalizer or Notch Filter. (See “Digital Programmable Filter”)
(4) ALC: Input Digital Volume with ALC function. (See “ALC Operation”)
(5) Balance: Stereo Balance Control.
(6) Main Volume: Stereo Main Volume Control.
MS0952-E-00
Digital Block
frequency response and the gain after the Stereo Separation Emphasis Filter.
Audio
Processing
Block
Figure 15 Audio Processing Block
EQ0 bit
GN1-0 bits
ALC1/2 bits
VOL1/2 bits
EQ5-1 bit
BAL1/2 bits
FIL3 bit
(Audio Data from selector)
Figure
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Compensation
Separation
Balance
Volume
Stereo
5 Band
SDTO1, 2
Main
ALC
Gain
EQ
15.
[AK4141]
2008/05