Omega OME-A822PG manual I/O Register Address, Address Read Write

Page 18

2.4I/O Register Address

The OME-A-822PGL/PGH occupies 16 consecutive PC I/O addresses. The following table lists the registers and their locations.

Address	Read	Write
Base+0	8254 Counter 0	8254	Counter 0
Base+1	8254 Counter 1	8254	Counter 1
Base+2	8254 Counter 2	8254	Counter 2
Base+3	Reserved	8254	Counter Control
Base+4	A/D Low Byte	D/A Channel 0 Low Byte
Base+5	A/D High Byte	D/A Channel 0 High Byte
Base+6	DI Low Byte	D/A Channel 1 Low Byte
Base+7	DI High Byte	D/A Channel 1 High Byte
Base+8	Reserved	A/D Clear Interrupt Request
Base+9	Reserved	A/D Gain Control
Base+A	Reserved	A/D Multiplexer Control
Base+B	Reserved	A/D Mode Control
Base+C	Reserved	A/D Software Trigger Control
Base+D	Reserved	DO Low Byte
Base+E	Reserved	DO High Byte
Base+F	Reserved	Reserved

OME-A-822PGL/PGH Hardware Manual ---- 16

Image 18

Contents User’sGuide Benelux CanadaMexico Czech RepublicOME-A-822PGH/PGL Tables of Contents IntroductionConnector Features General DescriptionAnalog Inputs SpecificationsPower Consumption 3 A/D ConverterDA Converter Digital I/OInterrupt Channel Programmable Timer/Counter Direct Memory Access Channel DMAApplications Product Check ListHardware Configuration Board LayoutI/O Base Address Setting Default base address isJumper Settings 1 JP1 D/A Internal Reference Voltage Selection2 JP2 D/A Int/Ext Ref Voltage Selection 3 JP3 Single-ended/Differential Selection4 JP4 A/D Trigger Source Selection 5 JP5 Interrupt Level Selection6 JP6 User Timer/Counter Clock Input Selection 7 JP7 DMA Dack Selection JP8 DMA DRQ Selection DRQ JP7 Dack JP8 DMAI/O Register Address Address Read Write1 8254 Counter 2 A/D Input Buffer RegisterConversion is completed, the Ready bit will clear to zero 3 D/A Output Latch Register 4 D/I Input Buffer Register Clear Interrupt Request6 A/D Gain Control Register GAIN3 GAIN2 GAIN1 GAIN0OME-A-822PGH Gain Control Code Table 7 A/D Multiplex Control Register8 A/D Mode Control Register 9 A/D Software Trigger Control Register 10 D/O Output Latch Register Digital I/O CN28254 Timer/Counter CounterA/D Conversion 1 A/D conversion flow Polling, interrupt and DMA2 A/D Conversion Trigger Modes 3 A/D Transfer ModesUsing software trigger and polling transfer Delay the settling time refer to Sec .4.6 and SecRefer to Sec D/A Conversion Analog Input Signal Connection OME-A-822PGL/PGH Hardware Manual OME-A-822PGL/PGH Hardware Manual Signal Shielding Use a single connection to frame ground not A.GND or D.GNDUsing OME-DB-8225 CJC Output CN1/CN2/CN3 Pin Assignment CN1 Digital Input Pin AssignmentCN2 Digital Output Pin Assignment SINGLE-ENDED Signal Mode Differential Signals OME-DB-37 Daughter BoardOME-DB-8225 OME-DB-16PCalibration Description of Variable ResistorsD/A Calibration A/D Calibration Diagnostic Utility IntroductionOME-A-822PGL/PGH Hardware Manual Running The Diagnostic Utility Setup Base address selection screenDMA no and IRQ no selection screen Calibration Function Test Test Test Screen Digital I/O Test Screen Multiplexer Test Screen Use IRQ Test Screen Use DMA Test Screen DA Gain Test Screen Timer 0 Test Screen Special Test Help WARRANTY/DISCLAIMER Temperature