Datasheet

3
4341H–MP3–10/07
AT8xC51SND2C/MP3B
3. Block Diagram
Figure 3-1. AT8xC51SND2C / AT8XSND2CMP3B Block Diagram
8-Bit Internal Bus
Clock and PLL
Unit
C51 (X2 Core)
Flash
ROM
Interrupt
Handler Unit
FILT
X2
X1
MP3
TWI
Controller
MMC
Interface
I/OPorts
SCL
SDA
MDAT
P0-P4
VSSVDD
Keyboard
Interface
KIN0
I
2
S/PCM
Audio
INT0
INT1
MOSI
MISO
3 Alternate function of Port 3
4 Alternate function of Port 4
Timers 0/1
T1
T0
SPI/DataFlash
Controller
MCLK
MCMD
SCK
RST
DSEL
DCLK
SCLK
DOUT
64 KBytes
USB
Controller
D+
D-
UART
RXD
TXD
IDE
Interface
SS
Watchdog
Flash Boot
4 KBytes
ISP
UVSSUVDD
and
BRG
ALE
3
3
3
3
3
4
4
4
4
Audio
Decoder
Interface
PA
Audio
DAC
Unit
HSR
HSL
AUXP
RAM
2304Bytes
3
AUXN
LINEL
LINER
MONOP
MONON
PAINP
PAINN
HPP
HPN
10-bit A to D
Converter
AREF
AIN1:0
(ADC is available on
8xSND2CMP3B only)