LC823450XDTBG

SOC ARM Cortex M3 CMOS 154Pin WLCSP T/R

LC823450 is audio processing system LSI for record and playback, and High-Resolution 32-bit & 192 kHz audio processing capable. It is possible to cover the most of functions necessary for a portable audio with only this LSI as follows. It has Dual CPU and DSP with High processing capability, and internal 1656K-Byte SRAM, which make it possible to implement large scale program. And it has integrated analog functions low-power Class D HP amplifier, PLL, ADC etc. so that PCB space and cost is reduced, and it has various interface USB, SD, SPI, UART, etc. to make extensibility high. Also it is provided with various function including SBC/AAC codec by DSP and UART and ASRC Asynchronous Sample Rate Converter for Bluetooth® audio. It is very small chip size in spite of the multi-funciton as described above and it realizes the low power consumption. Therefore, it is applicable to porable audio markets such as Wireless headsets and will show high performance.

Features |   | Benefits

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ARM® Cortex®-M3 Dual Core

ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.

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Dual Core and DSP enables parallel processing.

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32-bit fixed point, dual-MAC original DSP optimized for audio processing

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Effectiveness of original DSP:

Programmable in C

Available 32-bit fixed point C code

Royalty free and license free to integrated DSP

High processing capability

Reference: Average clock frequency 6.4 MHz @128K bps, 44.1 kHz MP3 software playback

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I2S I/F with 16/24/32-bit, MAX 192 kHz 2-ch x 2

audio functions with 16/24/32-bit, MAX 192 kHz

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High-Resolution Audio processing capability with 32-bit 192 kHz

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Various original DSP codes lineup for audio processing:

MP3 codec, FLAC codec, Noise Cancel, Variable speed playback, etc.

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Possible to reduce DSP codes development cost.

Several DSP codes are available with no additional fee such as Noise cancel, Variable speed playback, etc.

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Package size : 5.52 mm x 5.33 mm @WLP154

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Product downsizing by minimum package.

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Internal SRAM 1656K byte for ARM® Cortex®-M3 Dual Core and original DSP

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Large scale program can be implemented by large capacity memory.

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Hard wired audio functions:

MP3 encoder and decoder, EQ 6-band equalizer,

ASRC Asynchronous Sample Rate Converter, etc.

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Low power audio processing by hard wired audio functions

Reference: 4 mA @128K bps, 44.1 kHz MP3 hardware playback

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Integrated analog functions:

low-power Class D HP amplifier, system PLL, dedicated audio PLL, ADC

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PCB space and cost is reduced by Integrated analog functions.

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Various interfaces:

USB2.0 HS device / host not OTG, eMMC, SD card, SPI, I2C, etc.

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Various functions SBC/AAC codec with the DSP, UART, ASRC contribute to Bluetooth®audio.

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ARM® Cortex®-M3 Dual Core and original DSP clock max frequency:

160 MHz @1.2 V

100 MHz @1.0 V

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High processing capability by higher clock frequency.

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Oscillation controller to switch dynamically clock frequency

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Depending on processing, switching clock frequency by oscillation controller reduce unnecessary power consumption.

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Cortex®-M3 Single Core power consumption: 0.11 mW/MHz @1.0 V

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