Akai PDP42Z5TA Service Manual page 67

Microelectronics
24-bit, 192 KHz. CODEC: 6 Ch DAC, 5 Input Mux Stereo ADC
DESCRIPTION
The CE2836 is a mixed signal CMOS monolithic audio
Codec. It contains six multi-bit sigma delta DAC and a
stereo ADC with 5 input multiplexer, Ideal for audio
playback and recording applications.
The DAC consists of 128-time interpolation filters, 3
order multi-bit Σ∆ modulators, switch capacitors and
analog reconstruction filters. The Σ∆ converter offers
superior differential linearity, with minimum distortion due
to component mis-match. high tolerance to clock jitter.
Additionally it includes separated digital volume control
for each channel.
The ADC utilizes cascaded Σ∆ architecture. The internal
digital filter has a 20K bandwidth. It support sampling
frequency up to 96K Hz. The ADC also includes a analog
Automatic Level Control and Noise Gate function to ease
the recording applications.
ADXCK
DOUT
ADC CK ADC SIF
CE2836
rd
ADBCK ADFS SCL
SDA
C I F
OFP
ALC
65／148
FEATURES
• Six Channel Audio DAC.
- 104 dB SNR (A eighted).
W
- -82 dB THD + N Ratio (A Weighted).
- 32K - 192 KHz. Sampling Rates.
- On -chip Reconstruction Filters.
- Independent Digital Volume Control.
• Stereo Audio ADC.
- 5 Channel ADC inputs.
- Up to 96K Sampling Rate.
- With Automatic Level Control and Noise Gate.
- Includes ALC and Noise Gate Functions.
2
• I S, Left and Right Justified Digital I/F Formats.
• 2-wire Serial Control Interface.
• 3.3 Volt Power Supply.
Applications
• Digital Surround Sound For Home Theatre
• DVD or DVD Recordable.
DIN3 DIN2 DIN1 DABCK
DAC SIF
DAC 6 CHANNEL
GAIN CONTROL
INTERPOLATION
FILTER
CE2836
DAFS DAXCK
DAC CK