Features
•
Audio Processor
– Proprietary Digital Signal Processor
– MP3 (Full MPEG I/II-Layer 3) Decoder
(1)
– Windows Media
®
Audio (WMA) Decoder
(1)
– OGG (Vorbis) Decoder
(2)
– WAV PCM Decoder/Encoder
– ADPCM Decoder/Encoder (G726: 40, 32, 24, 16 Kbps)
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
– Baseband Sound Processor with Digital Volume Control, Bass, Medium, and
Treble Control, Bass Boost and Virtual Surround Effects
Digital Audio DAC Interface
– PCM / I
2
S Format Compatible
USB Rev 2.0 Controller
– High Speed Mode (480 Mbps)
– Full Speed Mode (12 Mbps)
– On The Go Full Speed Mode
Data Flow Controller
– 16-bit Multimedia Bus with 2 DMA Channels for high speed transfer with USB
Nand Flash Controller
– Up to four Memories with Page Size: 512B, 1KB, 2KB or 4KB
– Built-in ECC and Hardware Write Protection
– xD-Picture Card™ and SmartMedia
®
Card Interface
MultiMediaCard
®
Controller
– MultiMediaCard 1-bit / 4-bits Modes (V4.0 compatible)
– Secure Digital Card 1-bit / 4-bit Modes
Man Machine Interface
– Glueless Generic LCD Interface
– Keyboard Interface
Remote Controlled / Streaming
– PSI I80 Slave Interface (EBI Compatible) up to 6Mbyte/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 (F
MAX
= 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
Power Management
– 1.8V 40 mA Single AAA or AA Battery Powered
(4)
– Direct USB V
BUS
Supply
– 3V - 50 mA Regulator Output
– 1.8V - 50 mA Regulator Output
– Battery Voltage Monitoring
– Power-on Reset
– Software Programmable MCU Clock
– Idle, Power-Down, Power-Off Modes
On Chip Debug
Operating Conditions
– Supply 0.9V to 5V
– 25 mA Typical Operating at 25°C (estimation to be confirmed)
– Temperature Range: -40°C to +85°C
•
•
•
•
•
Single-Chip
Digital Audio
Decoder -
Encoder with
USB 2.0
Interface
AT85C51SND3B1
AT85C51SND3B2
AT85C51SND3B3
Preliminary
•
•
•
•
•
•
•
7632A–MP3–03/06
1
•
Packages
– LQFP100, BGA100, Dice
Notes:
1.
2.
3.
4.
See Ordering Information
Future product
AT85C51SND3B2 & AT85C51SND3B3 only
AT85C51SND3B3 only
Description
Digital Music Players, Mobile Phones need ready to use low-cost solutions for very fast
time to market. The AT85C51SND3Bx with associated firmware embeds in a single chip
all features, hardware and software, for Digital Music Players, Mobile Phones and Car
Audio Systems: MP3 decoder, WMA decoder, Display interface, serial interface, parallel
interface, USB high speed and USB host.
Close to a plug and play solution for most applications, the AT85C51SND3Bx drastically
reduces system development for the best time to market. The AT85C51SND3Bx han-
dles full file system management with Nand Flash and Flash Cards, including full
detection and operation of a thumb drive. The AT85C51SND3A is used either as a mas-
ter controller, or as a slave controller interfacing easily with most of the base-band or
host processors available on the market.
In addition to the MP3 and WMA format, the AT85C51SND3Bx associated firmware will
also later support, the OGG format, basic MIDI features for low cost mobile phones and
JPEG still pictures decoding. The AT85C51SND3B is ideally fitting mass production
markets.
The AT85C51SND3Bx includes Power Management with: 5V USB V
BUS
direct supply,
2.7V to 3.6V supply, 1.8V supply or alkaline battery supply (0.9V to 1.8V). External
Nand Flash or Flash Card can be supplied by the AT85C51SND3B at 1.8V or 3V.
The AT85C51SND3Bx supports many applications including: mobile phones, music
players, portable navigation, car audio, music in shopping centers, applications includ-
ing MMC/SD Flash Cards in Industrial applications.
To facilitate custom applications with the AT85C51SND3Bx, a development kit
AT85DVK-07 is available with hardware and firmware database.
Key Features
•
Firmware to support
–
–
–
–
MP3
WMA
ADPCM/WAV voice or line recording
and coming soon OGG, MIDI and JPEG Decoder
Internal DAC
FM inputs
Up to 4x Nand-Flash
SD/MMC cards
High Speed, Full Speed
OTG (reduced Host)
•
Audio Codec
–
–
•
Memory Support
–
–
•
USB
–
–
2
AT85C51SND3Bx
7632A–MP3–03/06
AT85C51SND3Bx
Block Diagram
Figure 1.
AT85C51SND3Bx Block Diagram
AT85C51SND3Bx
USB Controller
HS / FS
Device
Controller
Control Processor Unit
Remote Interfaces
Serial Peripheral Interface
Host / OTG
Controller
Enhanced X2
C51 Core
Serial I/O Interface
Interrupt Controller
MMI Controller
Keyboard
Interface
LCD
Interface
Parallel Slave Interface
Memory Unit
Memory Controllers
Clock Controller
Oscillator
PLL
Clock
Generator
Configurable 64 Kbytes
Code / Data RAM
Nand Flash
SM / xD
Cards
MMC V4
SD
Cards
Boot ROM
Power Management
Power Fail
Detector
1.8V
DC-DC
(1)
3V
Regulator
1.8V
Regulator
Timer Unit
2 x 16-bit Timers
Watchdog Timer
16-bit Multimedia Bus
Audio Controller
Audio DAC
Interface
Audio
Processor
Baseband
Processor
Debug Unit
On Chip Debug
Multimedia Bus Manager
Data Flow Controller
Audio Codec
(2)
Notes:
1. AT85C51SND3B3 only
2. AT85C51SND3B2 & AT85C51SND3B3 only
3
7632A–MP3–03/06
Application Information
The AT85C51SND3Bx allow design of 2 typical applications which differentiate 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.
Very Low Voltage 1.8V System
Figure 2.
Typical Very Low Voltage 1.8V Application
AT85C51SND3B3
1.8V NF Memories
Battery
Write Protect
SD/MMC
LVDD
LCD
FM Module
PA
4
AT85C51SND3Bx
7632A–MP3–03/06
AT85C51SND3Bx
Low Voltage 3V System
Figure 3.
Typical Low Voltage 3V Application
AT85C51SND3B2
3V NF Memories
Write Protect
SD/MMC
Battery
FM Module
LCD
3V DC-DC
HVDD
5
7632A–MP3–03/06
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