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XRT79L71IB датащи(PDF) 71 Page - Exar Corporation |
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XRT79L71IB датащи(HTML) 71 Page - Exar Corporation |
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71 / 441 page ![]() áç áç áç áç PRELIMINARY XRT79L71 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC REV. P1.0.3 59 RECEIVE OVERHEAD DATA OUTPUT INTERFACE RECEIVE OVERHEAD DATA OUTPUT INTERFACE - TIMING REQUIREMENTS Table 13, Timing Information for the Receive Overhead Data Output Interface Block AC ELECTRICAL CHARACTERISTICS (CONT.) Test Conditions: TA = 25°C, VDD = 3.3V + 5% unless otherwise specified SYMBOL PARAMETER MIN.TYP.MAX.UNITS CONDITIONS Receive Overhead Data Output Interface Timing - Method 1 - Using RxOHClk (see Figure 17) t59A Falling edge of RxOHClk to RxOHFrame output 20 25 23 0 ns ns DS3 Applications E3 Applications t59B Falling edge of RxOHClk to RxOH output delay 20 25 23 0 ns ns DS3 Applications E3 Applications Receive Overhead Data Output Interface Timing - Method 2 - Using RxOHEnable (see Figure 18) t60 Rising edge of RxOutClk to rising edge of RxOHEnable delay. 29.4 ns t60A Rising edge of RxOHFrame to rising edge of RxOHEnable delay 88 224 28 ns ns ns DS3 Applications E3, ITU-T G.832 Applications E3, ITU-T G.751 Applications t60B RxOH Data Valid to rising edge of RxOHEnable delay 88 85 28 ns ns ns DS3 Applications E3, ITU-T G.832 Applications E3, ITU-T G.751 Applications |
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