LC823450: Low Power & High-Resolution Audio Processing System LSI

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

ARM® Cortex®-M3 Dual CoreARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
32-bit fixed point, dual-MAC original DSP optimized for audio processing
I2S I/F with 16/24/32-bit, MAX192kHz (2-ch x 2)audio functions with 16/24/32-bit, MAX 192 kHz
Various original DSP codes lineup for audio processing:MP3 codec, FLAC codec, Noise Cancel, Variable speed playback, etc.
Package size : 5.52 mm x 5.33 mm @WLP154
Internal SRAM (1656K byte) for ARM® Cortex®-M3 Dual Core and original DSP
Hard wired audio functions:MP3 encoder and decoder, EQ (6-band equalizer),ASRC (Asynchronous Sample Rate Converter), etc.
Integrated analog functions:low-power Class D HP amplifier, system PLL, dedicated audio PLL, ADC
Various interfaces:USB2.0 HS device / host (not OTG), eMMC, SD card, SPI, I2C, etc.
ARM® Cortex®-M3 Dual Core and original DSP clock max frequency:160 MHz @1.2 V100 MHz @1.0 V
Oscillation controller to switch dynamically clock frequency
Cortex®-M3 Single Core power consumption: 0.11 mW/MHz @1.0 V

Benefits

Dual Core and DSP enables parallel processing.
Effectiveness of original DSP:Programmable in CAvailable 32-bit fixed point C codeRoyalty free and license free to integrated DSPHigh processing capability(Reference: Average clock frequency 6.4 MHz @128K bps, 44.1 kHz MP3 software playback)
High-Resolution Audio processing capability with 32-bit 192 kHz
Possible to reduce DSP codes development cost.Several DSP codes are available with no additional fee such as Noise cancel, Variable speed playback, etc.
Product downsizing by minimum package.
Large scale program can be implemented by large capacity memory.
Low power audio processing by hard wired audio functions(Reference: 4.86 mA @128K bps, 44.1 kHz MP3 hardware playback)
PCB space and cost is reduced by Integrated analog functions.
Various functions (SBC/AAC codec with the DSP, UART, ASRC) contribute to Bluetooth®audio.
High processing capability by higher clock frequency.
Depending on processing, switching clock frequency by oscillation controller reduce unnecessary power consumption.

Applications

Audio Processing for Potable Audio
Audio Processing for Wireless Audio
Audio Processing for High-Resolution Audio

End Products

IC Recorders
Wireless headsets
Other porable audio devices
High Resolution Audio players

Software (1)

Document Title	Document ID/Size	Revision	Revision Date
LC823450XGEVK Software	LC823450XGEVK_SOFTWARE (759kB)	1

Package Drawings (2)

Document Title	Document ID/Size	Revision
TQFP128 14x14 / TQFP128L	932BA (58.3kB)	A
WLCSP154 5.52x5.33, 0.4P	567LD (41.3kB)	A

Errata (1)

Document Title	Document ID/Size	Revision	Revision Date
Silicon Errata for LC823450	LC823450-ERR/D (60kB)	1	Aug, 2016

Application Notes (9)

Document Title	Document ID/Size	Revision	Revision Date
Boot Mode Configuration of LC823450 Series for Audio Applications	AND9291/D (226kB)	1	Dec, 2016
Class D Amplifiers of LC823450 Series for Audio Applications	AND9465/D (87kB)	2	Dec, 2016
Low Power Techniques of LC823450 Series for Audio Applications	AND9407/D (213kB)	0	Apr, 2016
Multi-Core Configuration of LC823450 Series for Audio Applications	AND9547/D (165kB)	0	Jan, 2017
Music Playback Software of LC823450 Series for Audio Applications	AND9529/D (465kB)	0	Dec, 2016
Power Supply Sequence of LC823450 Series for Audio Applications	AND9528/D (177kB)	0	Dec, 2016
Software Stack Readiness of LC823450 Series for Audio Applications	AND9292/D (178kB)	0	Sep, 2015
Sound Recording Software of LC823450 Series for Audio Applications	AND9530/D (473kB)	0	Dec, 2016
X’tal selection & PLL setting of LC823450 Series for Audio Applications	AND9466/D (77kB)	0	Jun, 2016

Evaluation Board Documents (4)

Document Title	Document ID/Size	Revision	Revision Date
LC823450XGEVK Bill of Materials ROHS Compliant	LC823450XGEVK_BOM_ROHS.pdf (89kB)	2
LC823450XGEVK Gerber Layout Files (Zip Format)	LC823450XGEVK_GERBER.zip (1265kB)	0
LC823450XGEVK Low Power & High-Resolution Audio Processing System LSI Evaluation Board User's Manual	EVBUM2339/D (886kB)	1	Jun, 2016
LC823450XGEVK Schematic	LC823450XGEVK_SCHEMATIC.rev0 (1900kB)	0

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
Low Power & High-Resolution Audio Processing System LSI for Portable Sound Solution	LC823450/D (1234kB)	3	Dec, 2015

Evaluation/Development Tool Information

Product	Status	Compliance	Short Description
LC823450XGEVK	Active	Pb-free	Low Power & High-Resolution Audio Processing System Evaluation Board Kit

Order Information

Product	Status	Compliance	Package		MSL*	Container		Budgetary Price/Unit
LC823450TA-2H	Active	Pb-free Halide free	TQFP-128 / TQFP-128L	932BA	3	Tray JEDEC	450	$8.0
LC823450XATBG	Active	Pb-free Halide free	WLCSP-154	567LD	1	Tape and Reel	1000	$8.34
LC823450XBTBG	Active	Pb-free Halide free	WLCSP-154	567LD	1	Tape and Reel	1000	$8.34
LC823450XCTBG	Active	Pb-free Halide free	WLCSP-154	567LD	1	Tape and Reel	1000	$8.34
LC823450XDTBG	Active	Pb-free Halide free	WLCSP-154	567LD	1	Tape and Reel	1000	$8.34