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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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XRT79L71IB датащи(PDF) 87 Page - Exar Corporation |
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XRT79L71IB датащи(HTML) 87 Page - Exar Corporation |
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87 / 109 page  XRT79L71 84 REV. 1.0.0 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE MICROPROCESSOR INTERFACE TIMING - POWER PC 403 SYNCHRONOUS MODE NOTE: The value for "t0" through "t12" can be found in Table 10. TABLE 9: TIMING INFORMATION FOR THE MICROPROCESSOR INTERFACE WHEN CONFIGURED TO OPERATE IN THE MOTOROLA (68K) ASYNCHRONOUS MODE Test Conditions: TA = 25°C, VCC = 3.3V±5% and 2.5V±5%, unless otherwise specified. TIMING DESCRIPTION MIN. TYP. MAX t0 Address setup time to pALE low 6 - - t1 Address hold time to pALE high 6 - - t2 Data setup time to pDS_L low 0 - - t3 Data hold time to pDS_L low 160 - - t4 pDS_L high to pRDY_L high (Write Cycle) - - 16 t5 pRDY_L low to Data valid - - 15 t6 pDS_L high to pRDY_L high (Read Cycle) - - 16 t7 pRDY_L high to Data invalid 3 - - FIGURE 10. SYNCHRONOUS MODE 3 - IBM POWERPC 403 INTERFACE TIMING (WRITE CYCLE) pCLK pCS_L pA[14:0 ] pD[7:0] pRdy pRW_L pOE_L t0 t1 t2 t3 t4 t5 t6 t7 Address Data pWE_L t8 t9 |
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