ST18-AU1

ST18-AU1 SIX-CHANNEL DOLBY AC3/MPEG2 AUDIO DECODER PRELIMINARY DATA FEATURES s Single chip multi-function audio decoder able to decompress DOLBY AC-3, MPEG-1 and MPEG-2 audio streams. Maximum 5.1 channel DOLBY AC-3 decoding to 2 channel mixed down output with DOLBY surround compatible or karaoke capable option. Variable bit rate MPEG-1 layer II audio decoding, and MPEG-2 multi-channel audio decoding for karaoke capable application. Input data rates s s s Interrupt controller DMA controller Emulation unit and TAP s s up to 448 Kbits/s for AC-3 decoder up to 912 Kbits/s for MPEG-1 or MPEG-2 audio decoder Clocks and timers D950 DSP core I2C Host interface 24K Data memory 16K Program memory s Supports up to 8 channel DVD linear PCM input at max rate of 6.144 Mbits/s down-mixing and/ or sub-sampling to 2 to 6 channels. Accepts MPEG-1 or DVD/MPEG-2 PES input packets. Programmable D950 core System time clock provides A/V synchronization and PTS packet extraction. Automatic error concealment on CRC or synchronization error. 6 channel PCM audio output at 16/18/20/24 bit. Sampling rate of 32/44.1/48/96 kHz. Two on-chip PLLs providing full circuit operation with only one external 27 MHz clock. I2C interface for host control Multi-format i2S serial data input port and decoded audio PCM output port. IEC-958 (S/PDIF) formatter and transmitter for DOLBY AC-3, MPEG audio bit stream, or audio PCM. Dedicated hardware for emulation and test, IEEE 1149.1 (JTAG). 3.3V power supply, I...