- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367823 > PCL-818L (Electronic Theatre Controls, Inc.) High-performance DAS card with programmable gain PDF資料下載
參數(shù)資料
| 型號： | PCL-818L |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High-performance DAS card with programmable gain |
| 中文描述： | 高性能DAS的可編程增益卡 |
| 文件頁數(shù)： | 54/74頁 |
| 文件大?。?/td> | 546K |
| 代理商： | PCL-818L |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁當前第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁
50
PCL-818L User's Manual
The Intel 8254
The PCL-818L provides an Intel 8254 programmable interval timer/
counter, version 2. The popular 8254 offers three independent 16-bit
down counters. Each counter has a clock input, control gate and an
output. You can program each counter for maximum count values from
2 to 65535.
Version 2 of the 8254 has a maximum input clock frequency of 10 MHz.
The PCL-818L provides 1 MHz and 10 MHz input frequencies to the
8254 from an on-board crystal oscillator. Jumper JP2 controls the input
frequency. See Chapter 2 for more information.
Counters 1 and 2 on the 8254 are cascaded and operated in a fixed
divider configuration. Counter 1 input connects to the 1 MHz or 10
MHz clock frequency, and the output of Counter 1 connects to the
input of Counter 2. The output of Counter 2 is internally configured to
provide trigger pulses to the A/D converter, but you can also access it
for your own use from connector CN3 pin 37. Counter 0 is not used by
the PCL-818L and is available for your use. You can access it through
CN3 pin 18.
Counter read/write and control
registers
The 8254 programmable interval timer uses four registers at addresses
BASE+12, BASE+13, BASE+14 and BASE+15. Register functions
appear below:
Register
BASE+12
BASE+13
BASE+14
BASE+15
Function
Counter 0 read/write
Counter 1 read/write
Counter 2 read/write
Counter control word
Since the 8254 counter uses a 16 bit structure, each section of read/
write data is split into a least significant byte (LSB) and most signifi-
cant byte (MSB). To avoid errors it is important that you make read/
write operations in pairs and keep track of the byte order.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCL01-6 | LOW CAPACITANCE TVS ARRAY |
| PCL100 | REINIGUNG TINTE FETT OEL 100ML |
| PCL19012-SERIES | Optoelectronic |
| PCL19010-SERIES | Optoelectronic |
| PCL19011-SERIES | Optoelectronic |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCL-818LS | 制造商:ADVANTECH 制造商全稱:Advantech Co., Ltd. 功能描述:100 kS/s, 12-bit, 16-ch ISA Multifunction Card |
| PCL-818LS-CE | 制造商:Advantech Co Ltd 功能描述:PCL-818L With PCLD-8115And Cable |
| PCL81A03 | 制造商:Amphenol PCD 功能描述:METAL P-CLAMP - Bulk |
| PCL82A06 | 制造商:Amphenol PCD 功能描述:METAL P-CLAMP - Bulk |
| PCL-832-A | 制造商:Advantech Co Ltd 功能描述:3-Axis Servomotor Control ISA-bus Card |
發(fā)布緊急采購，3分鐘左右您將得到回復。