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參數(shù)資料
| 型號： | PCI-ADC |
| 英文描述： | MULTIFUNKTIONSKARTE 44 KANAL PCI BUS |
| 中文描述： | MULTIFUNKTIONSKARTE 44卡納爾PCI總線 |
| 文件頁數(shù)： | 15/35頁 |
| 文件大小： | 124K |
| 代理商： | PCI-ADC |
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Chapter 3
Programming Details
Page 7
Blue Chip Technology Ltd.
01270193.doc
Page 7
If this FIFO memory is not required, it may be ignored, as its actions are
transparent to the user. For example, if a single channel is to be converted, then
the conversion is initiated and when complete, indicated by either the ‘busy’
flag being negated, the ‘FIFO empty’ flag being negated, or from interrupts, the
sample may then be read directly from the analogue input sample port.
If, however, a series of samples are required before any processing begins, or the
software overhead of reading the card is so great that it must be performed
infrequently, then the FIFO may be used to store the samples as they are taken,
with processor intervention only being required when the FIFO is full. The
samples may then be read.
Conversion may be initiated under software control, or by a hardware trigger
which may be generated either from counter/ timer 0, 1, or 2, or from an
external trigger input.
The ADC busy and FIFO flags are accessible in the Analogue Input Status
Register (see below).
Conversion Control
Conversion may be of a single channel, or of a number of channels, scanned
sequentially. It may be initiated under software control or by a hardware trigger
from a number of sources. Single channel conversion is normally initiated
under software control. Conversion of a number of channels would normally be
under hardware control, although software control is feasible.
Two registers control the ADC section: the Input Select Register and the
Conversion Control Register. Both have a number of functions. The Input
Select Register controls the input channel, the gain, and the selection of single,
differential or calibration inputs. The Conversion Control Register selects the
conversion trigger source, whether a single or multiple channels are to be
converted, and whether conversion is single or continuous.
Interrupts may be generated on the following conditions (see Interrupt Status
Register):-
ADC not busy (i.e. conversion complete)
FIFO half full
FIFO not empty
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| PCI-DIO | KARTE E/A 32 KANAL PCI BUS |
| PCI-NT | TREIBER SOFTWARE FUER PCI E/A KARTEN |
| PCI-PIO | KARTE E/A 48 KANAL PCI BUS |
| PCI-WDT | UEBERWACHUNGSKARTE PLUG AND PLAY |
| PCI-WIN2000 | WINDOWS 2000 FOR PCI DATA ACQU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| PCIB24W9M400A1 | 制造商:Positronic Industries 功能描述: |
| PCIB40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40-Ch Digital I/O & Counter Board |
| PCIC16W7M400C1 | 制造商:Positronic Industries 功能描述: |
| PCI-C588 | 功能描述:界面模塊 8 PORT ASYNC SERIAL COMM PCI CARD RoHS:否 制造商:4D Systems 產(chǎn)品:Serial Converters 通道/端口數(shù)量: 數(shù)據(jù)速率: 接口類型:USB, UART 工作電源電壓:3.3 V, 5 V 最大工作溫度: |
| PCI-C6600S4-2-67-167 | 制造商:Johnson Components 功能描述:SBC;DSP, 2 C9701, 2MB SRAM, IN |
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