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参数资料
| 型号： | MPC9991FA |
| 厂商： | MOTOROLA INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | PLL BASED CLOCK DRIVER, 13 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52 |
| 封装： | PLASTIC, LQFP-52 |
| 文件页数： | 11/11页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC9992 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:3.3 DIFFRERENTIAL ECL/PECL PLL CLOCK GENERATOR |
| MPC9992AC | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MPC9992ACR2 | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MPC9992FA | 功能描述:锁相环 - PLL 2.5 3.3V 400MHz Clock Generator RoHS:否 制造商:Silicon Labs 类型:PLL Clock Multiplier 电路数量:1 最大输入频率:710 MHz 最小输入频率:0.002 MHz 输出频率范围:0.002 MHz to 808 MHz 电源电压-最大:3.63 V 电源电压-最小:1.71 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:QFN-36 封装: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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