Low Power & High-Resolution Audio Processing System SoC for Portable Sound Solution LC823455 www.onsemi.com Description LC823455 is an audio processing SystemonChip (SoC) for recording and playback, with HighResolution 32bit & 192 kHz audio processing capability that provides the key functions required for portable audio solutions. It has a Dual CPU configuration and a DSP providing intensive processing capability, 4316 KB of internal SRAM that supports the implementation of large-scale programs for WLAN applications, and WLCSP120, 4.086x4.086x0.62 multiple interfaces for increased extensibility. Its features an extensive CASE 567WG range of functions including SBC/AAC codec and Active Noise Canceller by the DSP, UART and ASRC applicable for wearable audio applications. The highly integrated implementation of this rich set of analog functions results in a miniature footprint with ultra low power consumption. This, along with its high performance, makes the LC823455 suitable for portable audio markets such as Wireless LFBGA136, 11.0x11.0 headsets. CASE 566GB This document describes features, basic functions, electrical specifications, characteristics, application diagrams and package ORDERING INFORMATION dimension of this SoC. See detailed ordering and shipping information on page 104 of this data sheet. Features Ultra Low Power Consumption Arm Cortex M3 Dual Core Proprietary 32bit DSP Core (LPDSP32) Internal LargeScale Size SRAM : 4316 KB (4 MB + 220 KB) HighResolution 32bit & 192 kHz Audio Processing Capability Several DSP Codes Available for Audio Functions HardWired Audio Functions BuiltIn: MP3 decoder, MP3 encoder, 6 band Equalizer Synchronous SRC, Asynchronous SRC, etc. Analog Blocks Builtin: System PLL, Audio PLL, 16bit DAC, ClassD amp, etc. USB2.0 Device with an Integrated PHY, eMMC and SD Card I/F, Serial Flash I/F(Quad) with Cache Memory, SPI, UART, I2C, etc. Typical Applications Wearable Earbuds Wearable Headphone Wireless Speaker IC Recorder NOTE: LC823455RB2H is under planning. LC823455RB2H : Package Code = RB Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: April, 2021 Rev. 3 LC823455/DLC823455 Table of Contents Abstract ................................................................................................ 3 Terminal Function ...................................................................................... 21 Pin Assignment ........................................................................................ 36 Input/Output Circuit ..................................................................................... 45 Electrical Specification .................................................................................. 55 AC Characteristics ..................................................................................... 69 www.onsemi.com 2