參數(shù)資料
型號(hào)： 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(yè)數(shù)： 27/35頁(yè)
文件大小： 124K
代理商： PCI-ADC
Chapter 3
Programming Details
Page 19
Blue Chip Technology Ltd.
01270193.doc
Page 19
Counter Control
The input lines of the Counter / Timer may be accessed on the rear panel
connector by sacrificing some of the digital I/O lines.
The Counter / Timers are permanently enabled. Counter / Timer 0 is
permanently clocked by the on board 4 MHz oscillator. Counter / Timers 1 and
2 may be clocked from several sources as shown in the table.
The clock inputs of the i8254 Counter / Timer are selected using the Counter
Control Register at Base 2 + 8, as shown below:-
Counter Control Register (Base 2 + 8) Read/write
Bit no.
b7..b4
b3..b2
Function
Not used
Counter / Timer 2 clock source:-
00 = 4 MHz on board clock
01 = PC0 port line
10 = Counter 1 output
11 = PC3 port line
00 = 4 MHz on board clock
01 = PC0 port line
10 = Counter 0 output
11 = PC3 port line
b1..b0
Counter / Timer 1 clock source:-
To use either port line PC0 or PC3 as an input to the Counter / Timer the i8255
or μPD71055 PIO port line must be configured as an input to avoid contention.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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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