LC823450 Datasheet, PDF (6/55 Pages) ON Semiconductor – Low Power & High-Resolution Audio Processing System LSI

LC823450
1-4 Block Diagram
1-4-1 Top
SWD/SWV
ICE
ARM Cortex-
M3
ARM Cortex-
M3
JTAG
ICE
LPDSP32
1MHz~
50MHz ^32.768kHz
XT1 XTRTC
DMAC
(8ch)
EXT4
SDRAM
CTRL
Reset
Controller
USB2.0
Multilayer Bus
S-Flash I/F
(1ch)
ISOLATED-G
Cache
(16 Kbyte)
BASIC
ISOLATED-E
External
Memory
Controller
PHY
XT1
BUF
(4.5 Kbyte)
USB2.0
Host
USB2.0
Device
Main
Module
Manager
Plain
Timer
(1ch×3)
Multiple
Timer
(2ch×4)
ISOLATED-H
EXT1
BUF
(512/512 byte×3)
OSC
System
PLL
SD I/F
(3ch)
MS I/F
MS PB
XT1 XTRTC RC
EXT3
APB
Bridge
SRAM
ROM
(120k byte)
(220k byte)
ISOLATED-D
SRAM
(512k byte)
SRAM
(512k byte)
ISOLATED-B ISOLATED-C
ISOLATED-I
SRAM
(512k byte)
ROM
(256k byte)
10bit ADC
(6ch)
PORT0~4
(80 I/O)
UART
(3ch)
PORT5
(10 I/O)
I2C
(2ch)
SPI
(1ch)
RTC
MP3
Decoder
16bit
Audio
DAC
Class-D
AMP
Audio Buffer
(64 Kbyte)
PCM
I/F
PCM
I/F
Digital
Mic
MP3
Encode
r
ATM
BEEP
VOLUME
EQ3
METER
MUTE
SSRC
ASRC
OSC
Audio PLL
XTRTC
ISOLATED
BCK0/1 XT1
MCLK0/1
(PCM I/F)
XTRTC AHB CLK
(HCLK)
ISOLATED-A
ISOLATED-F EXT2
not used
not used
intentionally intentionally
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