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PDF PS9850 Data sheet ( Hoja de datos )
| Número de pieza | PS9850 | |
| Descripción | Digital Audio Processor | |
| Fabricantes | PULSUS | |
| Logotipo |  |
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PS9850
Multi-channel Digital Audio Processor
Eight-channels, 192kHz, 24-bits
Digital Audio Processor for Full Digital Amplifier
Introduc-
tion_______________________
The PS9850 is a highly integrated system-on-chip audio
solution for multi-channel AV systems such as upper 5.1
channels, 6.1 channels or 7.1 channels. This device is a
high performance PWM modulator and a high resolution
digital audio processor.
This device uses AD modulation operating at a 384kHz
switching rate, supports AM interference rejection function,
and has PWM sequences for pop-less.
This device has an asynchronous sample rate converter
for a variety of input sample rates with an embedded jitter
correction function. For high performances and high reso-
lutions, audio processors operate 30bit data paths and a
192kHz sample rate.
This processor consists of equalizers, volume controls, a
bass management and automatic gain limiting functions.
Equalizers are fully programmable that have 69 band bi-
quad filters with either a static or graphic mode and have
usable preset graphic equalizer.
This device is operated with a single power source, as it
has regulators for its core. This device has a built-in PLL
without external loop filter. Therefore the external compo-
nents are minimized.
Applications______________________
ü DVD receiver
ü Hi-Fi AV Receiver
ü Set-top box
ü Car AV Systems
ü Digital audio workstations
Features__________________________
General
ü 3.3V single power supply
ü Embedded regulator for 1.2V Power
ü 64pin TQFP package
ü Built-in PLL without external loop filter
ü Internal clock generation with X-tal
ü I2C or SPI serial control slave interface
Fea-
tures___________________________
Audio Interface
ü 8-Channel serial audio interface.
ü Supports 16/18/20/24-bit input
ü Supports 13kHz ~ 192kHz input Fs.
ü Supports up to 192kHz Fs for 8 Channels.
ü Data formats
ü (I2S, left-justified or right-justified)
ü Microphone serial audio interface.
ü Sony Philips Digital Interface (SPDIF)
Audio Processor
ü 192kHz sampling rate of audio processing
ü 30x24 multipliers and 54-bit accumulator architec-
ture
ü 8-Channel sample rate converter
ü Fully programmable 69-band equalizers
ü Preset Graphic Equalizers
ü (+12 to -12, 0.5dB/step)
ü Pop Noise Reduction when equalizer coefficient
Downloads
ü Bass management
ü Four subsonic filter and LPF for subwoofer chan-
nel
ü Digital de-emphasis filter
ü Pre/post full matrix channel mixing.
ü Pre/post mapping.
ü Main volume control
ü (+18dB to -70dB, 0.5dB/step)
ü Soft/trim volume control
ü (+12dB to -12dB, 0.5dB/step)
ü Four independent automatic gain limiter
ü Supports night mode
ü Clipping Free Processing
ü (30-bit data processing)
PCM to PWM modulator
ü Pop noise reduction
ü AM interference rejection
ü 2-Channel PWM headphone output
ü 8-Channel PWM speaker output
ü PWM on/off control per channel
ü AD modulation operation
ü 384kHz carrier frequency
Copyright ©1999-2009 Pulsus Technologies, Inc.
Reserves the right to make changes to the information contained in this document without notice
Contact PULSUS Technologies for recent information. CONFIDENTIAL
Version: 0.93
August 17, 2009
Page: 2 / 3
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