SAF7849HL/M295,557

Encoders, Decoders, Converters Overview

The SAF7849HL/M295,557 is a single-chip CD audio decoder with integrated MP3 and WMA decoding capabilities. It features a 32-bit ARM7TDMI-S microprocessor operating at up to 76 MHz (68 MIPS). The device includes 130 kB mask-programmed ROM, 42 kB boot ROM, 64 kB re-programmable Flash ROM, and 110 kB internal SRAM. It integrates a digital servo, audio DAC, sample-rate converter, preamplifier, and laser driver. The chip supports CD-DA, CD-R, CD-RW, CD-ROM, Video CD, and SACD formats, offering up to 6x decode speed in CLV or CAV modes.

Encoders, Decoders, Converters Feature Summary

• Integrated ARM7TDMI-S processor for compressed audio stream decoding
• On-chip memory including Flash ROM and SRAM for application code
• Built-in digital servo and analog signal acquisition from optical pickup
• Programmable PDM outputs for stepper motor control

Encoders, Decoders, Converters Applications

• Low-cost compressed audio CD players
• MP3 and WMA playback devices
• Automotive audio systems requiring CD and digital audio processing

Encoders, Decoders, Converters Procurement Notes

Verify the specific suffix M295,557 against official NXP documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing design infrastructure before procurement. Check for end-of-life status as datasheet revision dates may indicate availability changes.

Encoders, Decoders, Converters Selection Notes

Select this component for applications requiring a unified solution for CD audio decoding and MP3/WMA processing. Consider the integrated laser driver and servo functions to reduce external component count. Evaluate power consumption requirements against the programmable clock frequency options available on the ARM core.

Encoders, Decoders, Converters Part Context

This part belongs to the SAF784x family of one-chip CD audio devices. Variants within the family share similar core functionalities but may differ in memory sizes or pin configurations. The SAF7849HL is designed for high integration, combining digital signal processing with analog front-end capabilities for optical disc reading.

Encoders, Decoders, Converters Replacement Considerations

Consult official NXP substitution guides for compatible alternatives. Verify pin-to-pin compatibility and functional equivalence if replacing in an existing design. No public substitute part numbers are confirmed in the provided source material.