- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄361246 > QADCRM Queued Analog-to-Digital Converter Reference Manual PDF資料下載
參數(shù)資料
| 型號(hào)： | QADCRM |
| 英文描述： | Queued Analog-to-Digital Converter Reference Manual |
| 中文描述： | 排隊(duì)模擬到數(shù)字轉(zhuǎn)換器參考手冊(cè) |
| 文件頁(yè)數(shù)： | 51/122頁(yè) |
| 文件大?。?/td> | 940K |
| 代理商： | QADCRM |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)當(dāng)前第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)
QADC
REFERENCE MANUAL
DIGITAL CONTROL
MOTOROLA
7-5
Until the single-scan enable bit is set, any trigger events for that queue are ignored.
The single-scan enable bit may be set to a one during the write cycle, which selects
the single-scan queue operating mode. The single-scan enable bit can be written as a
one or a zero, but is always read as a zero. The completion flag, completion interrupt,
or queue status are used to determine when the queue has completed.
After the single-scan enable bit is set, a trigger event causes the QADC to begin exe-
cution with the first CCW in the queue. The single-scan enable bit remains set until the
queue is completed. After the queue reaches completion, the QADC resets the single-
scan enable bit to zero. If the single-scan enable bit is written to a one or a zero by the
software before the queue scan is complete, the queue is not affected. However, if the
software changes the queue operating mode, the new queue operating mode and the
value of the single-scan enable bit are recognized immediately. The current conver-
sion is aborted and the new queue operating mode takes effect.
In the software initiated single-scan mode, the writing of a one to the single-scan en-
able bit causes the QADC to internally generate a trigger event and the queue execu-
tion begins immediately. In the other single-scan queue operating modes, once the
single-scan enable bit is written, the selected trigger event must occur before the
queue can start. A trigger overrun is recorded if a trigger event occurs during queue
execution in the external trigger single-scan mode and the interval timer single-scan
mode.
When a pause bit is encountered during the queue scan in a single-scan mode, anoth-
er trigger event is required for queue execution to continue. Software involvement is
not needed to enable queue execution to continue from the paused state. The single-
scan enable bit allows the entire queue to be scanned once.
In the software initiated single-scan mode, the trigger event is generated internally as
soon as the conversion is complete for the CCW with the pause bit set. The pause is
two QCLKs. In the external trigger single-scan mode, the queue remains paused until
another trigger edge is received on the external trigger pin.
In the interval timer single-scan mode, the next expiration of the timer is the trigger
event for the queue. After the queue execution is complete, the queue status is shown
as idle. The software can restart the queue by setting the single-scan enable bit to a
one. Queue execution begins with the first CCW in the queue.
7.3.2.1 Software Initiated Single-Scan Mode
Software can initiate the execution of a scan sequence for queue 1 or 2 by selecting
the software initiated single-scan mode, and writing the single-scan enable bit in
QACR1 or QACR2. A trigger event is generated internally and the QADC immediately
begins execution of the first CCW in the queue. If a pause is encountered, queue ex-
ecution ceases momentarily while another trigger event is generated internally, and
then execution continues.
The QADC automatically performs the conversions in the queue until an end-of-queue
condition is encountered. The queue remains idle until the software again sets the sin-
gle-scan enable bit. While the time to internally generate and act on a trigger event is
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| QAK2E104JCP | PLASTIC FILM CAPACITORS |
| QAK2E104JTP | PLASTIC FILM CAPACITORS |
| QAK2E104KCP | PLASTIC FILM CAPACITORS |
| QAK2E104KTP | PLASTIC FILM CAPACITORS |
| QAK2E105JCP | PLASTIC FILM CAPACITORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| QAE100 | 制造商:P-DUKE 制造商全稱(chēng):Power Mate Technology Co., LTD 功能描述:QUARTER-BRICK DC-DC CONVERTER 2:1 ULTRA WIDE INPUT RANGE UP TO 108Watts |
| QAE100W | 制造商:P-DUKE 制造商全稱(chēng):Power Mate Technology Co., LTD 功能描述:QUARTER-BRICK DC-DC CONVERTER 4:1 ULTRA WIDE INPUT RANGE UP TO 90Watts |
| QAE150 | 制造商:P-DUKE 制造商全稱(chēng):Power Mate Technology Co., LTD 功能描述:QUARTER-BRICK DC-DC CONVERTER 2:1 ULTRA WIDE INPUT RANGE UP TO 150Watts |
| QAE150W | 制造商:P-DUKE 制造商全稱(chēng):Power Mate Technology Co., LTD 功能描述:QUARTER-BRICK DC-DC CONVERTER 4:1 ULTRA WIDE INPUT RANGE UP TO 132Watts |
| QAEP | 制造商:Omnimount 功能描述:10.6 ~ 21 Inch Adjustable 1.5 Inch NPT Pipe Extension |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。