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Diamond Power Products MM-48-AT Base + Write Command Register, Dapre Daprld Reset Fiforst Adstart

Models: MM-48-AT

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Base + 8	Write		Command Register

Bit No.	7	6		5	4	3	2	1	0

Name					DAPRE	DAPRLD	RESET	FIFORST	ADSTART

Writing a 1 to any bit in this register causes a command or operation to be executed. Only one bit may be activated (set to 1) at a time. When a 1 is written to any bit, no other bit or related operation is affected.

DAPRE	All 8 D/A channels are set to the value in the D/A preset register. This value is
	user-definable and can be used for any purpose. A typical purpose is to generate
	a D/A reset to 0V by loading a preset value that corresponds to 0V for the
	selected D/A mode. For example, for D/A in unipolar mode, the preset value
	would be 0, and for D/A in bipolar mode, the preset value would be 2048.
DAPRLD	The D/A preset register is loaded with the value contained in registers 0-1. After
	the preset value is loaded into the D/A, a DAPRE command will update all 8 D/A
	channels with this value.
RESET	Reset the board to a known condition: All registers are cleared to 0, all DIO lines
	are set to input mode, interrupts are disabled, and the FIFO is reset. D/A
	channels are not reset or changed in any way.
FIFORST	Reset FIFO. Writing a 1 to this bit causes the on-board FIFO to be reset to empty
	in preparation for an interrupt-based A/D operation. After FIFORST, EF = 1 and
	OVF, FF, and HF = 0.
ADSTART	Start an A/D conversion.

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

Page 16

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Diamond Power Products MM-48-AT user manual Base + Write Command Register, Dapre Daprld Reset Fiforst Adstart

Contents

DIAMOND-MM-48-AT Table of Contents Description DIAMOND-MM-48-AT Board Drawing O Header Pinout and PIN Description Signal Name DefinitionJ3 Analog and Digital I/O J4 Relays and Optocouplers Signal Name Definition Relay output contactsOptoisolated input contacts Board Configuration Base AddressBase Address Jumper Position Hex Decimal Interrupt Level Selection Reserved Optocoupler PolarityAnalog Input Range Base + Write Function Read Function OverviewLSB MSB Register Map Bit Assignments Write operationsDA7 DA6 DA5 DA4 DA3 DA2 DA1 DA0 Read operations Register Definitions Base + WriteDefinitions Base + Read Base + Read/Write A/D Channel Register AD9 AD8HIGH3 HIGH2 HIGH1 HIGH0 LOW3 LOW2 LOW1 LOW0 Base + Read/Write Digital I/O Configuration Register Base + Read/Write Relay Control PortRELAY7 RELAY6 RELAY5 RELAY4 RELAY3 RELAY2 RELAY1 RELAY0 DIR3 DIR2 DIR1 DIR0 DIO3 DIO2 DIO1 DIO0 Base + Read Digital I/O Data and Edge StatusDEDGE3 DEDGE2 DEDGE1 DEDGE0 DIO3 DIO2 DIO1 DIO0 OEN3 OEN2 OEN1 OEN0 POL3 POL2 POL1 POL0 Daupdt DACH2 DACH1 DACH0 Base + Write Channel and Control RegisterOEDGE3 OEDGE2 OEDGE1 OEDGE0 OPTO3 OPTO2 OPTO1 OPTO0 Base + Write Command Register Dapre Daprld Reset Fiforst Adstart Base + Read Status Register POL ADCH3 ADCH2 ADCH1 ADCH0 Base + Write Configuration Register CKSEL1 CKFRQ1 CKFRQ0 Scnint Clken Clksel Base + Read Configuration & Status Register Adbusy Dabusy CKSEL1 CKFRQ1 CKFRQ0 Scnint Clken Clksel Base + Write Fifo Control Register Fifoth Fifoen ScanenBase + Read Fifo Status Register OVF Fifoth Fifoen Scanen Base + Write Interrupt Control Register Clrt Clrd Clro Clra Tinte Dinte Ointe Ainte Base + Read Interrupt Status Register Tint Dint Oint Aint Tinte Dinte Ointe Ainte Base + Read/Write Counter/Timer D15 Base + Read/Write Counter/Timer D7Base + Read/Write Counter/Timer D23 Ctrno Latch Gtdis Gten Ctdis Cten Load CLR Base + Write Counter/Timer Control RegisterCtrno Base + Read/Write Eeprom / TrimDAC Data Register Base + Read/Write Eeprom / TrimDAC Address Register Base + Write Eeprom Access Key Register Base + Write Calibration Control RegisterBase + Read Calibration Status Register Base + Read Fpga Revision Code Analog Input Ranges and Resolution ResolutionInput Ranges Single Ended and Differential Inputs Performing AN A/D Conversion Trigger an A/D conversion on the current channel LSB = readbase MSB = readbase+1 Data = MSB * 256 + LSB Input voltage = A/D value / 32768 * Full-scale voltage D SCAN, FIFO, and Interrupt Operation TriggerClken Clksel Conversion or Scan Fifo Operation Interrupt OperationFifoen Fifoth Scanen Fifoen = Operation Table Guidelines for Selecting Fifo Use Fifoen and FifothAinte Fifoen Scanen Analog Output Overview Generating AN Analog Output Autocalibration Operation Reference Voltages12.2 A/D calibration 12.3 D/A Calibration Digital I/O Operation Procedure for enabling interrupts on selected edges Optocoupler Operation Edge detection assumes OENn = 1 to enable edge detection Polarity and logic readback Relay Operation Counter 0 A/D Sample Control COUNTER/TIMER OperationCounter 1 Counting/Totalizing Functions Command Sequences Counter Counter Outpbase+15,0x01 Outpbase+15,0x81 Autocalibration SpecificationsGeneral