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DSC3.1-50-115V
大允許頻率為20 MHz，小脈沖寬度
10 ns高或低。沒(méi)有低頻率限制。
20 MHz或100 kHz內(nèi)部時(shí)基通常會(huì)生成
除非您選擇了一些外部源，否則請(qǐng)使用源信號(hào)。
通用正時(shí)信號(hào)連接
通用定時(shí)信號(hào)為GPCTR0\U源，
GPCTR0\U門(mén)，GPCTR0\U出，GPCTR0\U上下，
GPCTR1\U源、GPCTR1\U門(mén)、GPCTR1\U輸出、，
GPCTR1\U UP\U DOWN和FREQ\U OUT。
GPCTR0\U源信號(hào)
任何PFI引腳都可以從外部輸入GPCTR0\U源信號(hào)，即
可用作PFI8/GPCTR0\U源引腳的輸出。
GPCTR0\U源信號(hào)作為輸入配置在
邊緣檢測(cè)模式。您可以選擇任何PFI引腳作為的源
GPCTR0\U源并配置上升或
下降沿。
作為輸出，GPCTR0\U源信號(hào)反映實(shí)際時(shí)鐘
已連接到通用計(jì)數(shù)器0。即使另一個(gè)PFI是
外部輸入源時(shí)鐘。此輸出設(shè)置為三態(tài)
啟動(dòng)。

The maximum allowed frequency is 20 MHz, with a minimum pulse width of 10 ns high or low. There is no minimum frequency limitation. Either the 20 MHz or 100 kHz internal timebase normally generates the UISOURCE signal unless you select some external source. General-Purpose Timing Signal Connections The general-purpose timing signals are GPCTR0_SOURCE, GPCTR0_GATE, GPCTR0_OUT, GPCTR0_UP_DOWN, GPCTR1_SOURCE, GPCTR1_GATE, GPCTR1_OUT, GPCTR1_UP_DOWN, and FREQ_OUT. GPCTR0_SOURCE Signal Any PFI pin can externally input the GPCTR0_SOURCE signal, which is available as an output on the PFI8/GPCTR0_SOURCE pin. As an input, the GPCTR0_SOURCE signal is configured in the edge-detection mode. You can select any PFI pin as the source for GPCTR0_SOURCE and configure the polarity selection for either rising or falling edge. As an output, the GPCTR0_SOURCE signal reflects the actual clock connected to general-purpose counter 0. This is true even if another PFI is externally inputting the source clock. This output is set to tri-state at startup.