LC823450RAH.2H datasheet(5/112 Pages) ONSEMI

Part #	LC823450RAH.2H

Description	Low Power & High-Resolution Audio Processing System LSI

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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5 / 112 page

LC823450

www.onsemi.com

5

Block Diagram

(1ch

×3)

(2ch

×4)

Class−D

AMP

SWD/SWV

ICE

JTAG

ICE

1Mhz

∼

50MHz

32.768kHz

XTRTC

XT1

ARM Cortex−M3

LPDSP32

DMAC

(8ch)

Multilayer Bus

EXT4

S−Flash I/F

(1ch)

SDRAM

CTRL

ISOLATED−G

Reset

Controller

Cache

(16 Kbyte)

BASIC

ISOLATED−E

External

Memory

Controller

BUF

(4.5 Kbyte)

USB 2.0

Host

USB 2.0

Device

USB 2.0

PHY

XT1

Main

Module

Manager

Plain

Timer

Multiple

Timer

EXT1

ISOLATED−H

BUF

(512/512 byte x 3)

OSC

System

PLL

SD I/F

(3ch)

MS I/F

MS PB

XT1

XTRTC

RC

EXT3

Audio Buffer

(64 Kbyte)

MP3

Decoder

PCM

I/F

PCM

I/F

MP3

Encoder

Digital

Mic

16bit Audio

DAC

ISOLATED−A

ATM

BEEP

VOLUME

EQ3

METER

MUTE

SSRC

ASRC

OSC

Audio PLL

BCK0/1

MCLK0/1

(PCM I/F)

XT1

XTRTC AHB CLK

(HCLK)

ISOLATED−F

not used

intenationally

EXT2

not used

intenationally

SPI

(1ch)

RTC

XTRTC

APB

Bridge

SRAM

(120k byte)

ROM

(220k byte)

ISOLATED−D

SRAM

(512k byte)

SRAM

(512k byte)

ISOLATED−B

ISOLATED−C

ISOLATED−I

SRAM

(512k byte)

ROM

(256k byte)

ROM

(220k byte)

10bit ADC

(6ch)

PORT0

∼4

(80 I/O)

UART

(3ch)

PORT5

(10 I/O)

I2C

(2ch)

ISOLATED

Figure 1. Top

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