Multi-channel Digital Audio Processor PS9830B 8Ch, 24bits, 192kHz Digital Audio Processor For Full Digital Amplifier Pulsus Technologies Copyright © 1999-2008, 2008 Pulsus Version1.07! November Technologies Inc. PULSUS PS9830B 8Ch, 24bit, 192kHz Digital Audio Processor For Full Digital Amplifier ! !! A. Introduction Sample-rate-converter Section The PS9830B is a highly integrated system-on-chip solution ! On-chip Sample rate converter for multi-channel AV systems such as 5.1 channel, 6.1 channel ! Supports up to 96kHz sample rate for 8-channel input or 7.1 channel. Through the use of a high-quality PCM to ! Supports up to 192kHz sample rate for 2-channel input PWM modulator, the PS9830B has an 8-channel PWM out and ! Automatic sample rate detection an additional 3-channel PWM out. It also has a 8-channel ! User Programmable LRCK locking range sample rate converter. It features 24-bit audio digital-to-digital converters and over-sampling digital filters, a sample rate converter, an audio DSP that functions as an on-chip preamplifier with equalizer, volume control, bass management and automatic gain limiting functions. The sample rate converter allows for input of up to 96kHz for 8-channel and 192kHz for 2-channel. It automatically detects the sampling frequency and converts input sample rate to internal 192kHz sample rate. This makes it easier for users to work with this chip. The PS9830B accepts industry-standard audio data formats with 16 to 24-bit audio data. It also supports sampling rates of up to 192 kHz. Preamplifier Section ! Big EQ (Expandable, Programmable, max 2channel 16band EQ) ! 4 Band EQ per channel (Fully Programmable, 1dB/step) ! Big EQ & 4 Band EQ are totally cooperated. ! Adjustable EQ processing position ! Two EQ coefficients sets ! Night mode support (AGL min -60dB) ! Input and Output mapping function ! On-chip digital de-emphasis filter ! Input mixing function ! Microphone mixing function ! Stereo down-mixing function and output ! Bass management function Application ! Four subsonic filter and LPF for subwoofer channel ! Main volume control (+18 to -70, 0.5dB/step) ! DVD Receiver (DVD player plus 7.1ch receiver) ! Additional trim control (+12 to -12, 0.5dB/step) per channel ! Hi-Fi A/V Receiver ! Soft volume and Soft volume update ! HDTV sets ! Four independent Automatic Gain Limiter Group (peak detection) ! Set top Box ! Soft Mute per channel ! Car A/V Systems ! DC input detect Auto-mute (include Zero input) ! DVD Add-On Cards for High-End PCs ! Clipping-free processing (30-bit data processing) ! Digital Audio Workstations PCM-to-PWM modulator section ! Other Multi-Channel Digital Audio Systems ! Pop Noise Free ! PC Speakers ! AM Interference Rejection ! ! ! ! 8-channel PWM amplification output ! Selectable PWM line output on channel 7 and 8 Features ! 2-channel PWM headphone output General! ! ! 1 channel PWM Subwoofer line output ! Internal clock generation with X-tal ! PWM On/Off control per channel ! ! 2 serial input ports for 8 Channels ! 105 dB SNR (A-weighted) ! ! User can select the master/slave mode of input port ! Sub input port can be changed to serial output port ! Supports 16/18/20/24 bits Input ! Supports 13kHz~192kHz Input Sample Rate 2 ! I C or SPI control bus ! Built-in PLL without External Loop Filter ! 5V tolerant Inputs ! 3.3V Single power supply (regulator inside) ! 100 pin TQFP Package ! 3 Copyright © 1999-2008, 2008 Pulsus Version1.07 November Technologies Inc. PULSUS PS9830B ! B. Functional Block Diagram ! 4 Copyright © 1999-2008, 2008 Pulsus Version1.07 November Technologies Inc.