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AT91EB40 Evaluation Board

AT91EB40 Evaluation Board - AT91EB40 Evaluation Board User...

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AT91EB40 Evaluation Board ............................................................................. User Guide
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iii Table of Contents Section 1 Overview ............................................................................................... 1-1 1.1 Scope ........................................................................................................ 1-1 1.2 Deliverables .............................................................................................. 1-1 1.3 The AT91EB40 Evaluation Board ............................................................. 1-1 Section 2 Setting Up the AT91EB40 Evaluation Board .................................................................................. 2-1 2.1 Electrostatic Warning ................................................................................ 2-1 2.2 Requirements ............................................................................................ 2-1 2.3 Layout ....................................................................................................... 2-1 2.4 Jumper Settings ........................................................................................ 2-2 2.5 Powering Up the Board ............................................................................. 2-2 2.6 Measuring Current Consumption on the AT91R40807 ............................. 2-3 2.7 Testing the AT91EB40 Evaluation Board ................................................. 2-3 Section 3 The On-board Software ........................................................................ 3-1 3.1 Flash Memory Organization ...................................................................... 3-1 3.1.1 Flash Write Access ............................................................................. 3-1 3.1.2 Boot Software ..................................................................................... 3-2 3.1.3 Functional Test Software (FTS) .......................................................... 3-2 3.1.4 SRAM Downloader ............................................................................. 3-2 3.1.5 Angel Monitor ..................................................................................... 3-3 Section 4 Circuit Description ................................................................................. 4-1 4.1 AT91EB40 Top Level ................................................................................ 4-1 4.2 AT91R40807 Processor ............................................................................ 4-1 4.3 I/O Expansion ........................................................................................... 4-1 4.4 External Bus Interface ............................................................................... 4-1 4.5 Power, Crystal Oscillator and Clock Distribution ....................................... 4-1 4.6 JTAG Interface, Reset, Interrupts and LEDs ............................................ 4-2 4.7 Serial Interface .......................................................................................... 4-2 4.8 Layout Drawing ......................................................................................... 4-2
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Table of Contents iv Section 5 Appendix A – Configuration Links and SRAM Bank 1 .......................... 5-1 5.1 Jumpers (LK2) .......................................................................................... 5-1 5.2 Surface Mount Links (LK1, LK3 - 9) .......................................................... 5-1 5.3 Increasing Memory Size ........................................................................... 5-2 Section 6 Appendix B - Schematics ...................................................................... 6-1 6.1 Schematics ............................................................................................... 6-1
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AT91EB40 Evaluation Board User Guide 1-1 Section 1 Overview 1.1 Scope The AT91EB40 Evaluation Board enables real-time code development and evaluation. It supports the AT91x40 series with its various memory options. This guide focuses on the AT91 Evaluation Board as an evaluation and demonstration platform: 1. Section 1 provides an overview. 2. Section 2 details the setup of the development board. 3. Section 3 describes the on-board software. 4. Section 4 gives the circuit description. Following are two appendixes covering configuration links and memory data, and sche- matics including pin connectors. 1.2 Deliverables The evaluation board is supplied with a DB9 plug to DB9 socket straight through serial cable to connect the target evaluation board to a PC. There is also a bare power lead with a 2.1 mm jack on one end for connection to a bench power supply. To use the evaluation board the user needs to provide a host computer and a debugging system. 1.3 The AT91EB40 Evaluation Board The board consists of an AT91R40807 together with several peripherals: Two serial ports Reset button Three applicative buttons (FIQ, TIOB0, IRQ0) Three LEDs (TIOA0, TIOA1, TIOB0) 512K bytes 16-bit SRAM (upgradable to 2048K bytes) 128K bytes 16-bit Flash (of which 64K bytes is available for user software) 20-pin JTAG interface connector If required, user-defined peripherals can also be added to the board. See Section 5, “Appendix A – Configuration Links and SRAM Bank 1” on page 5-1 for details.
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Overview 1-2 AT91EB40 Evaluation Board User Guide Figure 1-1. AT91EB40 Block Diagram JTAG ICE Connector ARM7TDMI Processor 8K Byte RAM EBI SRAM Flash EBI Monitor Points AMBA Bridge Buttons Interrupt Controller Watchdog Timer Counter Timers Serial Ports RS232 Drivers Clock Generator Voltage Regulator AT91R40807 ASB APB LEDs Reset Reset Controller I/O Expansion Points 128K Byte Extended SRAM
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AT91EB40 Evaluation Board User Guide 2-1 Section 2 Setting Up the AT91EB40 Evaluation Board 2.1
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