GENERAL
The SAA2505H decodes multi-channel audio up to MPEG 7.1, AC-3 5.1 and pro-logic on a dual DSP core.

FEATURES
Hardware features
• Two 40 MIPS 20-bit DSP cores
• All input and output buffer RAM is on-chip
• Program ROM on-chip for all decoding modes
• Two I2S-bus inputs with normal, double and quad speed mode (slave only)
• Second serial input usable for ADC (Karaoke input)
• Three normal and double speed I2S-bus outputs (slave and master from 256 and 384fs)
• One normal, double, quad speed I2S-bus output (slave and master from 256 and 384fs)
• Japanese EIAJ serial input and output formats
• Sony Philips Digital Interface (SPDIF) output
• I2C-bus control (up to 400 kHz)
• 3.3 V supply with 5 V TTL compatible inputs/outputs
• Boundary scan for printed-circuit board testing.

Software features
• AC-3 up to 5.1 channels
• MPEG 2 L2 up to 7.1 channels
• MPEG 1 L2 (Video-CD) 2 channels at 44.1 kHz
• Dolby pro-logic decoding at 32, 44.1 and 48 kHz
• Output configuration for 7, 5, 4, 3, 2 and 1 channels with or without Low Frequency Enhancement (LFE)
• Bass redirection for small satellite loudspeakers plus subwoofer
• Karaoke voice mix
• Dynamic range compression (AC-3 and MPEG)
• Adjustable delay up to 15 ms for surround channels (1.5 kbyte words)
• Adjustable delay up to 5 ms for centre channel (250 words)
• Rounding to DAC word length
• Mute by pin and I2C-bus command
• AC-3 and MPEG bitstream information available via the I2C-bus
• Concealment of CRC errors
• SPDIF coded output
• Fully programmable SPDIF channel status information.

APPLICATIONS
    The SAA2505H is intended for all markets where a multi-channel audio decoder for Dolby AC-3 and MPEG 2 is required.
    Primary markets are for DVD video players, TV sets and audio/video amplifiers.