Diamond Power Products MM-48-AT user manual Description

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DIAMOND-MM-48-AT

Autocalibrating Analog I/O PC/104 Module

1. DESCRIPTION

Diamond-MM-48-AT (DMM-48-AT) is a PC/104 expansion board offering embedded systems designers a full feature set of analog and digital I/O capabilities. It is designed to be used in any PC-compatible embedded computer with a PC/104 (ISA-bus) expansion connector.

DMM-48-AT offers reduced embedded system size and weight, as well as lower cost, by providing more functionality on one board than other data acquisition boards.

Key features include:

Analog Inputs

♦16 single-ended analog inputs

♦16-bit A/D resolution

♦200KHz maximum aggregate A/D sampling rate

♦+/-10V and +/-5V input ranges standard; 0-5V input range optional

♦2048-sample FIFO for reliable high-speed sampling

♦Autocalibrated input circuit

Analog Outputs

♦8 analog outputs

♦12-bit D/A resolution, 0-4.096V output range (1mV per LSB)

♦Autocalibrated output circuit

Digital I/O

♦4 programmable direction digital I/O lines

♦Edge detection capability with interrupt on change of state

Optocoupler Inputs

♦4 optocoupler inputs, 3-28VDC input range

♦Configurable input polarity

♦Edge detection capability with interrupt on change of state

Relay Outputs

♦8 SPDT (form C) relays

♦1A / 30VDC or 0.125A / 125VAC rating

Counter/Timers

♦1 24-bit counter/timer for A/D sampling rate control

♦1 16-bit counter/timer for user counting and timing functions

♦Programmable clock source for user counter/timer

System Features

♦+5V-only operation

♦Latching I/O connectors

♦Jumpers may be replaced with zero-ohm resistors for increased ruggedness

♦Extended temperature operation (-40 to +85oC)

Diamond-MM-48-AT User Manual V1.01

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Contents DIAMOND-MM-48-AT Table of Contents Description DIAMOND-MM-48-AT Board Drawing Signal Name Definition O Header Pinout and PIN DescriptionJ3 Analog and Digital I/O Signal Name Definition Relay output contacts J4 Relays and OptocouplersOptoisolated input contacts Interrupt Level Selection Board ConfigurationBase Address Base Address Jumper Position Hex DecimalOptocoupler Polarity ReservedAnalog Input Range Overview Base + Write Function Read FunctionLSB MSB Read operations Register Map Bit AssignmentsWrite operations DA7 DA6 DA5 DA4 DA3 DA2 DA1 DA0Base + Read Register DefinitionsBase + Write DefinitionsAD9 AD8 Base + Read/Write A/D Channel RegisterHIGH3 HIGH2 HIGH1 HIGH0 LOW3 LOW2 LOW1 LOW0 DIR3 DIR2 DIR1 DIR0 Base + Read/Write Digital I/O Configuration RegisterBase + Read/Write Relay Control Port RELAY7 RELAY6 RELAY5 RELAY4 RELAY3 RELAY2 RELAY1 RELAY0OEN3 OEN2 OEN1 OEN0 POL3 POL2 POL1 POL0 DIO3 DIO2 DIO1 DIO0Base + Read Digital I/O Data and Edge Status DEDGE3 DEDGE2 DEDGE1 DEDGE0 DIO3 DIO2 DIO1 DIO0Base + Write Channel and Control Register Daupdt DACH2 DACH1 DACH0OEDGE3 OEDGE2 OEDGE1 OEDGE0 OPTO3 OPTO2 OPTO1 OPTO0 Dapre Daprld Reset Fiforst Adstart Base + Write Command RegisterPOL ADCH3 ADCH2 ADCH1 ADCH0 Base + Read Status RegisterCKSEL1 CKFRQ1 CKFRQ0 Scnint Clken Clksel Base + Write Configuration RegisterAdbusy Dabusy CKSEL1 CKFRQ1 CKFRQ0 Scnint Clken Clksel Base + Read Configuration & Status RegisterOVF Fifoth Fifoen Scanen Base + Write Fifo Control RegisterFifoth Fifoen Scanen Base + Read Fifo Status RegisterClrt Clrd Clro Clra Tinte Dinte Ointe Ainte Base + Write Interrupt Control RegisterTint Dint Oint Aint Tinte Dinte Ointe Ainte Base + Read Interrupt Status RegisterBase + Read/Write Counter/Timer D7 Base + Read/Write Counter/Timer D15Base + Read/Write Counter/Timer D23 Base + Write Counter/Timer Control Register Ctrno Latch Gtdis Gten Ctdis Cten Load CLRCtrno Base + Read/Write Eeprom / TrimDAC Address Register Base + Read/Write Eeprom / TrimDAC Data RegisterBase + Read Fpga Revision Code Base + Write Eeprom Access Key RegisterBase + Write Calibration Control Register Base + Read Calibration Status RegisterSingle Ended and Differential Inputs Analog Input Ranges and ResolutionResolution Input RangesPerforming AN A/D Conversion LSB = readbase MSB = readbase+1 Data = MSB * 256 + LSB Trigger an A/D conversion on the current channelInput voltage = A/D value / 32768 * Full-scale voltage Conversion or Scan D SCAN, FIFO, and Interrupt OperationTrigger Clken ClkselFifoen = Fifo OperationInterrupt Operation Fifoen Fifoth ScanenGuidelines for Selecting Fifo Use Fifoen and Fifoth Operation TableAinte Fifoen Scanen Analog Output Overview Generating AN Analog Output 12.3 D/A Calibration Autocalibration OperationReference Voltages 12.2 A/D calibrationDigital I/O Operation Optocoupler Operation Procedure for enabling interrupts on selected edgesPolarity and logic readback Edge detection assumes OENn = 1 to enable edge detectionRelay Operation COUNTER/TIMER Operation Counter 0 A/D Sample ControlCounter 1 Counting/Totalizing Functions Counter Command SequencesCounter Outpbase+15,0x01 Outpbase+15,0x81 Specifications AutocalibrationGeneral