- 您現在的位置：買賣IC網 > PDF目錄361246 > QADCRM Queued Analog-to-Digital Converter Reference Manual PDF資料下載
參數資料
| 型號： | QADCRM |
| 英文描述： | Queued Analog-to-Digital Converter Reference Manual |
| 中文描述： | 排隊模擬到數字轉換器參考手冊 |
| 文件頁數： | 68/122頁 |
| 文件大小： | 940K |
| 代理商： | QADCRM |
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頁當前第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁
MOTOROLA
7-22
DIGITAL CONTROL
QADC
REFERENCE MANUAL
CF2 — Queue 2 Completion Flag
CF2 indicates that a queue 2 scan has been completed. CF2 is set by the QADC when
the input channel sample requested by the last CCW in queue 2 is converted, and the
result is stored in the result table.
The end of queue 2 is identified when the current CCW contains an end-of-queue code
instead of a valid channel number, or when the currently completed CCW is in the last
location of the CCW RAM.
When CF2 is set and interrupts are enabled for that queue completion flag, the QADC
asserts an interrupt request at the level specified by IRL2 in the interrupt register
(QADCINT). The software reads CF2 during an interrupt service routine to identify the
interrupt request. The interrupt request is cleared when the software writes a zero to
the CF2 bit, when the bit was previously read as a one. Once set, only software or re-
set can clear CF2.
CF2 is maintained by the QADC regardless of whether the corresponding interrupts
are enabled. The software polls for CF2 to see if it is set. This allows the software to
recognize that the QADC is finished with a queue 2 scan. The software acknowledges
that it has detected the completion flag being set by writing a zero to the completion
flag after the bit was read as a one.
Refer to
SECTION 8 INTERRUPTS
for more information.
0 = Queue 2 scan is not complete.
1 = Queue 2 scan is complete.
PF2 — Queue 2 Pause Flag
PF2 indicates that a queue 2 scan has reached a pause. PF2 is set by the QADC when
the current queue 2 CCW has the pause bit set, the selected input channel has been
converted, and the result has been stored in the result table.
Once PF2 is set, the queue enters the paused state and waits for a trigger event to
allow queue execution to continue. However, if the CCW with the pause bit set is the
last CCW in a queue, the queue execution is complete. The queue status becomes
idle, not paused, and both the pause and completion flags are set.
When PF2 is set and interrupts are enabled for the corresponding queue, the QADC
asserts an interrupt request at the level specified by IRL2 in the interrupt register. The
software reads PF2 during an interrupt service routine to identify the interrupt request.
The interrupt request is cleared when the software writes a zero to PF2, when the bit
was previously read as a one. Once set, only software or reset can clear PF2.
PF2 is maintained by the QADC regardless of whether the corresponding interrupts
are enabled. The software may poll PF2 to find out when the QADC has reached a
pause in scanning a queue. The software acknowledges that it has detected a pause
flag being set by writing a zero to PF2 after the bit was last read as a one.
0 = Queue 2 has not reached a pause.
1 = Queue 2 has reached a pause.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| QAE100 | 制造商:P-DUKE 制造商全稱: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: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: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: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 |
發布緊急采購，3分鐘左右您將得到回復。