Atmel AT91EB42 manual Overview, Asb

Page 6

Overview

2 x 32-pin EBI expansion connectors

2 x 32-pin I/O expansion connectors

20-pin JTAG interface connector

If required, user-defined peripherals can also be added to the board. See Section 5 for details.

Figure 1-1.AT91EB42 Evaluation Board Block Diagram

				AT91M42800
		Reset
		Controller		8K Byte
				8K Byte
				RAM
			ARM7TDMI		SRAM
			ARM7TDMI
		JTAG	Processor
		JTAG
		ICE		EBI
		Connector		EBI
		Connector
				ASB	Flash
					Flash
		32.768 KHz	Clock
		Crystal	Generator	AMBA
				Bridge	Serial	LEDs
					Serial	LEDs
					EEPROM
		Push-buttons	Interrupt	PIO
		Push-buttons	Controller	PIO
			Controller
			System	APB
			System
			Timer	Timer
				Timer
		Reset	Watchdog	Counters
		Reset			Serial
		Controller			Serial	Serial
		Controller			Data

						EEPROM
			Reset		Flash	EEPROM
			Reset		Flash
				SPI
			PIO
2.1mm DC				Serial
Power	Power Supply			Serial	RS232
Socket				Ports	Transceivers
				Ports	Transceivers
	Fast-charge	Battery
	Controller	Connector

EBI

Expansion

Connector

I/O

Expansion

Connector

DB9 Serial Connectors

1-2

AT91EB42 Evaluation Board User Guide

Image 6

Contents AT91EB42 Evaluation Board User Guide Page Table of Contents Appendix a Configuration Straps Table of ContentsDeliverables Section OverviewScope Evaluation Board Two serial portsOverview ASBSection Setting Up the AT91EB42 Evaluation Board Electrostatic WarningLayout Measuring TestingBoard CurrentSection On-board Software AT91EB42 Evaluation BoardProgram Downloader Programmed Default Memory MappingDefault Speed On-board SoftwareProcessor ConnectorsSection Circuit Description ExpansionConverter PowerMemories Crystal QuartzCircuit Description Circuit Description Section Appendix a Configuration Straps Configuration Straps CB1 23, JP1Appendix a Configuration Straps CB15 Serial DataFlash Enabling CB18 PB20 ADC Write Access SignalCB19 PB18 End of Fast Charge Signal CB17 SPI Eeprom EnablingStrap JP5 ConsumptionMeasurement JP6 Increasing Memory SizeSection Appendix B Schematics SchematicsAppendix B Schematics PCB LayoutAT91EB42 Evaluation Board User Guide EBI MemoriesEBI Memories Schematics AppendixI/O and EBI Expansion Connectors Serial Interface ValbpAT91M42800 Reset and Jtag Schematics Interface ICEVDDCORE=1.8V Saft VRE 1/2 AA AT91EB42 Evaluation Board User Atmel Headquarters Atmel Operations