SAF7843HL/M295,557

Encoders, Decoders, Converters Overview

The SAF7843HL/M295,557 is a single-chip CD audio decoder with integrated MP3 and WMA decoding capabilities. It features an ARM7TDMI-S microprocessor operating at up to 76 MHz. The device includes on-chip memories: 130 kB mask-programmed ROM, 42 kB boot ROM, 64 kB Flash ROM, and 110 kB SRAM. It integrates a digital servo, audio DAC, sample-rate converter, preamplifier, and laser driver. The component supports CD-DA, CD-R, CD-RW, CD-ROM, Video CD, and SACD (CD layer) formats in LQFP144 packaging.

Encoders, Decoders, Converters Feature Summary

• Integrated ARM7TDMI-S processor for compressed audio stream decoding
• On-chip channel decoder and digital servo with C3 error correction
• Built-in audio DAC with stereo line outputs and loopback mode
• Laser driver with power control and monitor feedback circuit

Encoders, Decoders, Converters Applications

• Low-cost compressed audio CD players
• MP3/WMA playback devices
• Digital servo systems for optical pickups

Encoders, Decoders, Converters Procurement Notes

Verify the specific suffix M295,557 against official NXP documentation to confirm tape-and-reel packaging details and RoHS compliance status. Ensure the ordering code matches the exact variant required for your design, as suffixes may indicate package or environmental specifications.

Encoders, Decoders, Converters Selection Notes

Select this component for applications requiring a single-chip solution for CD audio decoding with embedded MP3 and WMA support. Consider the integrated ARM7 core for custom audio processing algorithms and the built-in laser driver to reduce external component count.

Encoders, Decoders, Converters Part Context

This part belongs to the SAF784x family of one-chip CD audio decoders. Variants within the family, such as the SAF7846HL and SAF7847HL, share similar core functionalities but may differ in memory configurations or pin assignments. The SAF784x series targets low-cost system implementations for audio playback.

Encoders, Decoders, Converters Replacement Considerations

Check for direct replacements within the SAF784x family, specifically the SAF7846HL and SAF7847HL. Verify pin compatibility and memory requirements before substitution.