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參數(shù)資料
| 型號(hào)： | MPC9991FA |
| 廠商： | MOTOROLA INC |
| 元件分類： | 時(shí)鐘及定時(shí) |
| 英文描述： | PLL BASED CLOCK DRIVER, 13 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52 |
| 封裝： | PLASTIC, LQFP-52 |
| 文件頁(yè)數(shù)： | 11/11頁(yè) |
| 文件大?。?/td> | 144K |
| 代理商： | MPC9991FA |
MPC9991
MOTOROLA ADVANCED CLOCK DRIVERS DEVICE DATA
296
SYNC Output Description
The MPC9991 has a system synchronization pulse genera-
tor. In configurations with the output frequency relationships
are not integer multiples of each other SYNC provides a signal
for system synchronization purposes. The MPC9991 monitors
the relationship between the A bank and the C bank of outputs.
The SYNC output is asserted (logic high) depending on the
placement of the clock edges of the QA and QC outputs. The
QSYNC pulse width is equal to the period of the higher of the
QA and QC output frequencies. Figure 5 shows various wave-
forms for the SYNC pulse. The SYNC signal is defined for all
possible combinations of the bank A and bank C outputs. The
SYNC signal is routed to the QD bank of outputs if the
SYNC_SEL input is set to logic 0, otherwise the SYNC signal
generation is disabled and the QD outputs match the QC out-
put bank signals.
Figure 5. QSYNC Timing Diagram
QA
1:1 Mode
QC
QD (SYNC)
VCC
QA
2:1 Mode
QC
QD (SYNC)
QA
3:1 Mode
QC
QD (SYNC)
QA
3:2 Mode
QC
QD (SYNC)
QA
4:3 Mode
QC
QD (SYNC)
2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC9992 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:3.3 DIFFRERENTIAL ECL/PECL PLL CLOCK GENERATOR |
| MPC9992AC | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9992ACR2 | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MPC9992FA | 功能描述:鎖相環(huán) - PLL 2.5 3.3V 400MHz Clock Generator RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| MPC9992FAR2 | 制造商:Integrated Device Technology Inc 功能描述:PLL Clock Driver Single 32-Pin LQFP T/R |
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