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PDF AT85C51SND3B Data sheet ( Hoja de datos )
| Número de pieza | AT85C51SND3B | |
| Descripción | Single-Chip Digital Audio Decoder - Encoder | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Audio Processor
– Proprietary Digital Signal Processor
– MP3 and WMA Decoders
– WAV PCM and ADPCM Decoder/Coder with AGC
– JPEG decoder
– Video Animation (MTV up to 16fps)
• Audio Codec
– 16-bit Stereo D/A Converters(3)
– Headphone Amplifier with Analog Volume Control(3)
– Microphone Pre-Amplifier with Bias Control
– 16-bit Mono A/D Converter: Microphone or Line Inputs Recording
– Stereo Lines Input for FM Playback or Mono Recording
– 3-band EQ and Bass Boost and 3D Sound Effects
– Graphical EQ
• Digital Audio DAC Interface
– PCM / I2S Format Compatible
• USB Rev 2.0 Controller
– 7 Endpoints, Multiple Enumeration
– High Speed Mode (480 Mbps)
– Full Speed Mode (12 Mbps)
– On The Go Full Speed Mode
• File Management
– Fat 12, 16, 32 Management
– Multiple Drive Management: Nand Flash, Card, U-Disk...
– Multiple Folders and Sub-Folders (user defined)
– Multiple File Read and Write
– Playlist and Lyrics Support
• Data Flow Controller
–www.DataSheet4U.com 16-bit Multimedia Bus with 2 DMA Channels for high speed transfer with USB
• Nand Flash Controller
– Multiple Nand as 1 Drive, Support All Page Size
– Read up to 10MB/s, Write up to 8MB/s
– Built-in ECC and Hardware Write Protection
• MultiMediaCard® Controller
– MultiMediaCard 1-bit / 4-bits Modes (V4 compatible)
– Secure Digital Card 1-bit / 4-bit Modes
• Man Machine Interface
– Glueless Generic LCD Interface
– Keyboard Interface
– FM Tuner Input and Control including RDS
– PSI I80 Slave Interface (EBI Compatible) up to 6Mbytes/s
– SPI Master and Slave Modes
– Full Duplex UART with Baud Rate Generator up to 6 Mbit/s (Rx, Tx, RTS, CTS)
• Control Processor
– Enhanced 8-bit MCU C51 Core (FMAX = 24 MHz)
– 64K Bytes of Internal RAM for application code and data
– Boot ROM Memory: Secured Nand Flash Boot Strap (standard), USB Boot Loader
– Two 16-bit Timers/Counters: Hardware Watchdog Timer
– In-System and In-Application Programming
• Power Management
– 1.8V 40 mA Single AAA or AA Battery Powered(4)
– Direct USB VBUS Supply
– 3V or 1.8V - 50 mA Regulator Output
– Battery Voltage Monitoring
– Power-on Reset, Idle, Power-Down, Power-Off Modes
– Software Programmable MCU Clock
• Operating Conditions
– Supply 1.8V to 5V for all Product range, plus 0.9V to 1.8V(4)
Single-Chip
Digital Audio
Decoder -
Encoder with
USB 2.0
Interface
AT85C51SND3B
Preliminary
7632D–MP3–01/07
1
1 page  
AT85C51SND3B
Application Information
The AT85C51SND3B derivatives allow design of 2 typical applications which differenti-
ate by the power supply voltage:
• The Very Low Voltage System
The player operates at 1.8V and allows very low power consumption.
• The Low Voltage System
The player operates at 3V and allows low power consumption.
Figure 2. Typical Low Voltage 3V Application
AT85C51SND3B1
3V NF Memories
Write Protect
SD/MMC
FM Module
3V DC-DC
HVDD
LCD
7632D–MP3–01/07
5
5 Page 
USB Controller
7632D–MP3–01/07
AT85C51SND3B
Signal
Name
NFCLE
NFRE
NFWE
NFCE0
NFCE1
SMLCK
NFCE2
SMINS
NFCE3
SMCE
NFWP
Type Description
Command Latch Enable Signal
O
Asserted high during command write cycle.
Read Enable Signal
O
Read signal asserted low during NF/SMC read operation.
Write Enable Signal
O
Write signal asserted low during NF/SMC write operation.
Nand Flash 0 Chip Enable
O NFCE0 is active low and is asserted by the nand flash controller each
time it makes access to the device 0.
O Nand Flash 1 Chip Enable
NFCE1 is active low and is asserted by the nand flash controller each
time it makes access to the selected device.
I SmartMediaCard/xD-Picture Card Write Lock Signal
SMLCK is the card write protected input. A low level on this pin
indicates the card is write protected.
Note: When used as SMLCK input, pad has internal pull-up.
O Nand Flash 2 Chip Enable
NFCE2 is active low and is asserted by the nand flash controller each
time it makes access to the selected device.
I SmartMediaCard/xD-Picture Card Insertion Signal
SMINS is the card presence signal. A low level on this input indicates
the card is present in its slot.
Note: When used as SMINS input, pad has internal pull-up.
Nand Flash 3 Chip Enable
NFCE3 is active low and is asserted by the nand flash controller each
time it makes access to the selected device.
O
SmartMediaCard/xD-Picture Card Chip Enable
SMCE is active low and is asserted by the nand flash controller each
time it makes access to the card.
Write Protect Signal
O NFWP is the Nand Flash / SmartMediaCard/xD-Picture Card write
protect signal. This signal is active low and is set to low during reset in
order to protect the memory against parasitic writes.
Alternate
Function
-
-
-
-
P4.4
P4.5
P4.6
-
Table 7. USB Controller Signal Description
Signal
Name Type Description
DPF
I/O USB Full Speed Positive Data Upstream Port
DMF
I/O USB Full Speed Minus Data Upstream Port
DPH
I/O USB High Speed Plus Data Upstream Port
DMH
I/O USB High Speed Minus Data Upstream Port
UVCON
USB VBUS Control line
O UVCON is used to control the external VBUS power supply ON or OFF.
Note: This output is requested for OTG mode.
Alternate
Function
-
-
-
-
P3.6
11
11 Page | ||
| Páginas | Total 70 Páginas | |
| PDF Descargar | [ Datasheet AT85C51SND3B.PDF ] | |
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