Iord | Digi RCM4000 specification

Figure A-4shows a typical timing diagram for the Rabbit 4000 microprocessor external I/O read and write cycles.

External I/O Read (no extra wait states)

T1

Tw

T2

CLK A[15:0]

valid

Tadr

/CSx	TCSx
TCSx	TCSx
/IOCSx
TIOCSx	TIOCSx
/IORD
TIORD	TIORD
/BUFEN
TBUFEN	TBUFEN
	T
D[7:0]	setup
D[7:0]	valid
	Thold

External I/O Write (no extra wait states)

T1

Tw

T2

CLK A[15:0]

valid

Tadr

/CSx
TCSx	TCSx
/IOCSx	TIOCSx
TIOCSx	TIOCSx
/IOWR	TIOWR
TIOWR	TIOWR
/BUFEN	TBUFEN
TBUFEN	TBUFEN
D[7:0]	valid
TDHZV	TDVHZ

Figure A-4. External I/O Read and Write Cycles—No Extra Wait States

NOTE: /IOCSx can be programmed to be active low (default) or active high.

86	RabbitCore RCM4000

Image 92

Digi RCM4000 user manual Iord

Contents

RabbitCore RCM4000 Trademarks Rabbit Semiconductor Table of Contents Software Reference Appendix C. Power Supply 109 RabbitCore RCM4100 Introduction Feature RCM4000 RCM4010 RCM4000 FeaturesRCM4000 Features Advantages of the RCM4000 Development and Evaluation Tools 1 RCM4000 Development Kit Software Online Documentation RabbitCore RCM4000 Install Dynamic C Getting Started Hardware Connections Prepare the Prototyping Board for Development Attach Module to Prototyping Board Prototyping Board AC Adapter Connect Programming Cable Connect Power Run a Sample Program TroubleshootingRun a Sample Program Where Do I Go From Here? Technical Support RabbitCore RCM4000 Running Sample Programs Introduction Sample Programs User’s Manual Use of Nand Flash RCM4000 only Click OK or Close to exit the various dialog boxes Serial Communication User’s Manual 3 A/D Converter Inputs RCM4000 only Real-Time Clock Hardware Reference RabbitCore Module RCM4000 Digital Inputs and Outputs Shows the RCM4000 pinouts for header J3 4000 RCM4000 Pinout Configurations Pin Pin Name Default Use Alternate Use TXD PC0 PE1 Memory I/O Interface Other Inputs and Outputs Serial Ports Rabbit 4000 Serial Port and Clock PinsSerial Communication Ethernet Port RJ-45 Ethernet Port Pinout Programming Port Changing Between Program Mode and Run Mode Programming Cable Standalone Operation of the RCM4000 A/D Converter RCM4000 only Resistor Divider Network for Analog Inputs It is not referenced to 1 A/D Converter Power Supply Analog Supply Circuit Spectrum Spreader Other HardwareClock Doubler Memory SramFlash Eprom Nand Flash RabbitCore RCM4000 Software Reference More About Dynamic C RabbitCore RCM4000 Dynamic C Function Calls Digital I/OSerial Communication Drivers Sram Use RabbitCore RCM4000 Prototyping Board Functions Board Initialization Void timedAlertunsigned long timeout Alerts ADS7870 Signal ADS7870 State RCM3400 Function/State Analog Inputs RCM4000 only On write operations Data value on read operations Unsigned int anaInDriverunsigned int cmd, unsigned int len Gain Code Multiplier AnaInConfig, anaIn, brdInit Single Diff Gain Code Multiplier Voltage Range ×10 ×16 ×20 126 Applies to Prototyping Board If successful If not able to make calibration constants Float anaInVoltsunsigned int channel, unsigned int gaincode Channel Code Single-Ended Voltage Range † Input Lines Float anaInDiffunsigned int channel, unsigned int gaincode Float anaInmAmpsunsigned int channel Channel Code 20 mA Input Lines Allchan Gain Code Voltage Range +AIN7 AIN6 Gain Code Voltage Range Upgrading Dynamic C Add-On Modules RabbitCore RCM4000 Using the TCP/IP Features TCP/IP Connections RabbitCore RCM4000 TCP/IP Primer on IP Addresses Typical Corporate Network IP Addresses Explained How IP Addresses are Used Dynamically Assigned Internet Addresses Placing Your Device on the Network Direct Connection Direct Connection Using a HubRunning TCP/IP Sample Programs How to Set IP Addresses in the Sample Programs How to Set Up your Computer for Direct Connect Direct Connection PC to RCM4000 Module Run the PINGME.C Sample Program Running Additional Sample Programs With Direct Connect Where Do I Go From Here? RabbitCore RCM4000 Appendix A. RCM4000 Specifications Electrical and Mechanical Characteristics Dia × Exclusion Zone Table A-1. RCM4000 Specifications Parameter RCM4000 RCM4010 Ten 8-bit timers 6 cascadable from the first Parameter Test Conditions Table A-2 Converter Specifications1 A/D Converter Headers Figure A-3. User Board Footprint for RCM4000 Rabbit 4000 DC Characteristics Table A-4 .3 Volt DC CharacteristicsSymbol Parameter Maximum Rating Symbol Parameter Min Typ Max I/O Buffer Sourcing and Sinking Limit Bus LoadingTable A-5. Capacitance of Rabbit 4000 I/O Ports Table A-6. External Capacitive Bus Loading -40C to +85C Iord Table A-8. Preliminary Data and Clock Delays Output Delay30 pF 60 pF 90 pF Ns setting No dbl / dbl Clock to Address Worst-Case Conformal Coating Conformally coated Area Header Description Pins Connected Factory Default Jumper ConfigurationsTable A-9. RCM4000 Jumper Configurations RabbitCore RCM4000 Appendix B. Prototyping Board Current Measurement Headers RCM4000 Prototyping Board Features RabbitCore RCM4000 Mechanical Dimensions and Layout 935 Parameter Specification Power SupplyTable B-1. Prototyping Board Specifications Using the Prototyping Board Signals Pin Pin Name Prototyping Board Use Adding Other Components Measuring Current Draw 3.1 A/D Converter Inputs Analog Features RCM4000 onlyTable B-3. Positive A/D Converter Input Voltage Ranges Table B-4. Differential Voltage Ranges 3.3 A/D Converter Calibration Mode Read CalibrateThermistor Input Table B-5. Prototyping Board Serial Port Configurations Serial Port Header Default Use Alternate Use 4.1 RS-232 Prototyping Board Jumper Configurations Table B-6. RCM3400 Prototyping Board Jumper Configurations JP5 LN4IN-LN6IN 108 Battery-Backup Circuits Appendix C. Power SupplyPower Supplies Reset Generator 165 mA·h = 2.5 years User’s Manual 111 112 Index SMODE0 SMODE1 ADCALALL.C User’s Manual 115 116 Schematics