LinkUp L7205 Internet System Processor system-on-chip

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[Vendor: LinkUp Systems]

The L7205 is aimed at the fast-growing Internet and information appliance market for products such as Pocket PCs, screenphones, smartphones, wireless Internet terminals, TV set-top boxes, and MP3 players. Like the other members of the LinkUp Systems L7200 family, the L7205 is designed to provide a complete processor plus peripherals solution on a single chip.

The highly integrated L7205 system-on-chip includes, within a single IC . . .

Processor, DSP, memory, and system controllers

74 MHz ARM720T processor
MMU with 64-entry TLB
Piccolo DSP co-processor
SDRAM and static memory control
8-channel DMA controller
32-bit real time clock
Two 16-bit timer/counters

Peripheral Interfaces

Dual LCD controllers
- Color/Mono controller -- 640 x 480 x 12 bits/pixel
- Gray-scale controller -- 640 x 480 pixels x 16 gray-levels
2 async serial ports
- DMA support on both channels
- 960 Kbps max data rate ("Bluetooth ready")
- IrDA at 115Kbps/1.152Mbps/4Mbps on one channel
2 synchronous serial channels with DMA support
- SCC #1 -- UCB1200 interface for Modem codec, touch screen interface, or audio codec; SPI Master mode interface
- SCC #2 -- SPI/Microwire interface with Master/Slave mode support
USB (host and function interfaces)
AC Link audio codec interface for 16-bit stereo sound
52 general purpose I/O signals

Power management control with 5 modes:

Run (full power)
Idle
Snooze
Standby
Deep Sleep

Package: 280 pin BGAThe dual processors of the L7205 give system designers the flexibility to run many operating systems and applications, and can provide functionality such as JPEG compression, MP3 decoding with stereo playback and 56K modem connectivity. The power conservation features of the L7205 chip make it particularly well-suited for portable devices. Interfaces for MultiMedia Card flash-based storage and SmartCard access are included, as is an AC Link audio codec interface combining stereo audio and modem codecs. Softmodem code allows the L7205 chip to provide modem functionality for wired access to the Internet. The L7205 also directly connects to LinkUp Systems' L1121 PC Card/CompactFlash controller.

The L7205 system-on-chip is supported by a comprehensive, open source implementation of Linux.

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Use of this site is governed by our Terms of Service and Privacy Policy. Except where otherwise specified, the contents of this site are copyright © 1999-2008 Ziff Davis Enterprise Holdings Inc. All Rights Reserved. Reproduction in whole or in part in any form or medium without express written permission of Ziff Davis Enterprise is prohibited. Linux is a registered trademark of Linus Torvalds. All other marks are the property of their respective owners.