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參數(shù)資料
| 型號： | AT76C902 |
| 廠商： | Atmel Corp. |
| 英文描述： | Wireless VoIP Processor Implementing the 802.11 Standard |
| 中文描述： | 無線VoIP處理器實施802.11標準 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大?。?/td> | 55K |
| 代理商： | AT76C902 |
NOTE:
This is a summary document.
The complete document is available
under NDA. For more information,
please contact your local Atmel sales
office.
Features
ARM946E-S
TM
Core (ARM9) for implementing the VoIP Protocol, TCP/IP, VPN and
Controlling the Phone Functions with Internal 8K Instruction Cache and 8K Data Cache
Used for Fast Execution of the Communications Protocols and RTOS with Reduced
Power Consumption
ARM7TDMI
TM
Core (ARM7) for Implementing the 802.11 MAC Layer
Configurable Memory Banks to Assign Memory where Best Needed in Chip
16-bit Dual-MAC DSP for Implementing the G.723.1, G.729 and G.711.1 Standards, in
Addition to Acoustic Echo Cancellation
Integrated Audio Codec with Two Differential Multiplexed Microphone Inputs, One
Differential Speaker Output and One Differential Auxiliary Output Path
Glueless External Memory Interface Supporting up to 16 MB of External SRAM, 16 MB
of Flash and 512 MB of SDRAM
Hardware Security Accelerators Attached to the Common Bus Offer Instantaneous
Encryption/Decryption and Authentication Support for the Following Algorithms:
CCM/CTR/CBC Modes of Advanced Encryption Standard (AES) DES/3DES,WEP64/128,
Temporal Key Integrity Protocol (TKIP) and MD-5, SHA-1 Hash Functions for IP
Security
USB Slave Interface (Control, Interrupt, Bulk-in and Bulk-out Endpoints)
UART with Support to be used as USART
Serial Peripheral Interface (SPI) and Two Wire Serial Interface (TWI)
64-key Keypad Interface
4x4 LED Matrix Controller
Minimum of 5 GPIO Pins (up to 62 Available on Configuration)
208-lead BGA Package
1.8 Volt Core Voltage Supply
3.3 Volt I/O Voltage Supply
Figure 0-1.
Typical Application Using AT76C902
n Usin
76SRAM
DSP
Subsystem
External
Bus
Interface
ARM7TDMI
802.11 MAC
802.11
PHY
802.11
Interface
AT76C902
ARM946E-S
Protocol Handling
Control
Peripherals
Audio Codec
Speaker
Microphone
TWI Bus
- Battery Management
- Voltage regulation
- LCD Bias
- Other Phone ASICs
Audio to Headset
Serial Port
Accessory Controls
Battery Charge Voltage
Wireless VoIP
Processor
Implementing
the 802.11
Standard
AT76C902
Summary
5655AS–VoIP–09/06
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