SAA7893HL

General description

Thanks to the superior sound quality and multichannel capability of Super Audio CD (SACD) technology, multimedia devices such as DVD players and home cinema systems are incorporating SACD functionality. Philips' Super Audio Media Player (SA-MP) provides a flexible, state-of-the-art solution for SACD playback on DVD architectures.

Built around the SAA7893HL SACD processor, SA-MP system solution delivers complete SACD functionality, avoiding the need for continual redesign and re-integration of SACD into various applications. The system is completed with a single 64 Mbit SDRAM and has extensive software processing options, resulting in low total system cost .

With integrated support for multiple loaders, the SAA7893 supports a variety of DVD platforms. High level and standard software interfaces ? optimized for easy design-in ? further enhance adaptability, enabling designers to build SACD players on many different hardware and software platforms. This ensures that the SA-MP can be left unchanged even if the SACD playback hardware is altered, again minimizing development effort.

1.1 Hardware

The SA-MP hardware consists of the SAA7893HL device. A typical HW block diagram of a DVD system incorporating the SAA7893HL is shown.

The SAA7893HL takes sector data from the front-end. The front-end is controlled by the DVD host via the SA-MP software stack. The SAA7893HL uses one 64 Mbit SDRAM for audio data buffering and storage of SACD TOCs. The front-end timing can be fully asynchronous from all clocks.

The 6-channel DAC outputs of the DVD host are routed via the SAA7893HL which provides a DAC switch function between SACD mode and DVD mode. The audio outputs of the SAA7893HL operate on the system audio clock.

The DVD back-end communicates with the SAA7893HL via a host bus. The system clock and the system audio clock are allowed to be asynchronous.

1.2 Software

The SA-MP software is delivered in the form of a library in the development environment of the DVD host. The SA-MP software has been developed in ANSI-C using conventional software technology to allow easy integration into any development environment. A typical software block diagram of a DVD system incorporating SA-MP is shown.

At the device driver and HW-level, SA-MP interfaces with the SAA7893HL and a front-end driver. At the infrastructure level, SA-MP interfaces with an Operating System Abstraction layer (OSA). At the application level, SA-MP provides a high-level playback and post-processing interface which is easy to integrate into typical applications.

Features

Components

• SAA7893HL second generation SACD processor IC
• SA-MP Annex J+ level software stack.

HW interfaces

• Front-end, supports 3 types:
• UDE
• FEC
• I²S-bus
• Flexible PSP detection from EFM signal with AGC, without EFM clock (digital PLL)
• (DVD-)host bus, supports 3 types:
• Separate address/data bus (SAD16) with 16-bit data bus (3 different modes)
• Multiplexed address/data bus (MAD16) with 16-bit data bus (2 different modes)
• Separate address/data bus (SAD08) with 8-bit data bus (1 mode)
• 16-bit 100 MHz SDRAM interface supports one 64 Mbit device
• 6-channel I²S-PCM audio input 44.1, 48, 88.2, 96, 176.4 or 192 kHz at 16-bit or 24-bit
• 6-channel DSD or I²S-PCM (2f_s or 4f_s ) output with programmable pinning configuration
• 2-channel DSD or I²S-PCM (2f_s or 4f_s ) output with programmable pinning configuration
• Audio clock reference 256f_s , 384f_s , 512f_s or 768f_s
• System clock 27 to 35 MHz.

SW interfaces

• Annex J+ level playback interface
• High-level audio post-processing control
• SACD data interface
• System configuration

System

• Full SACD Menu TOC and Area TOC storage in VBR
• Front-end clock asynchronous to other clocks

System configuration

• D/A converters:
• DSD and PCM selectable pin sharing configuration
• DSD clock polarity
• Audio and system clock asynchronous
• Front-end type

SACD playback

• SACD playback:
• Multi-channel
• 2-channel
• PSP processing
• Decrypting and demultiplexing
• VBR management
• DST decoding
• Fade processing
• Annex J+ level software interface:
• Stop
• Pause
• Play
• Fast forward
• Fast reverse
• Next/previous track
• Program and play playlist
• Repeat (Track, All or AB)
• Shuffle
• Introscan
• Time search

Audio postprocessing

• DSD Bass Management with support of:
• Dolby^® configuration 0 (LLL1)
• Dolby^® configuration 1 (SSS1)
• Dolby^® configuration 2 (LSS0)
• Programmable bass filter frequency and slope:
• 60, 80, 100, 120 Hz
• 12, 18, 24 dB/Oct
(other frequencies or slopes are possible on customer request)
• DSD down mixing:
• 2/2
• 3/0
• 2/0
• separate 2/0
• DSD attenuation function 0 to -90 dB, programmable per channel
• DSD delay function total 65 ms (approximately 20 meters), programmable per channel
• 6-channel PCM input:
• 44.1, 88.2, 176.4, 48, 96 or 192 kHz at 16-bit or 24-bit
• PCM to DSD upsampling with 3 programmable Sigma-Delta and anti-aliasing filter modes
• Attenuation and delay as with DSD
• DSD to PCM conversion 88.2, 176.4 kHz at 24-bit.

SACD data and text

• Album info
• Disc info
• Album or disc text
• Area text
• Track data
• Track text.

General

• E-JTAG for board test and debug
• 3.3 V pad supply voltage
• 1.8 V core supply voltage
• 1.8 V analog supply voltage
• LQFP128 package
• 0.18 mm CMOS process.

Applications

• Consumer DVD players
• Home cinema
• Car audio systems.

Block diagrams/pinning

Design support

Support Documents

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