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TDA7500A 데이터시트(PDF) 22 Page - STMicroelectronics |
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TDA7500A 데이터시트(HTML) 22 Page - STMicroelectronics |
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22 / 40 page ![]() TDA7500A 22/40 Debug Port Interface Figure 7. Debug Port Serial Clock Timing. Figure 8. Debug Port Acknowledge Timing. No. Characteristics dclk = 40MHz Unit Min. Max. 1 DBCK rise time -- 3 ns 2 DBCK fall time -- 3 ns 3 DBCK Low 40 -- ns 4 DBCK High 40 -- ns 5 DBCK Cycle Time 200 -- ns 6 DBRQN Asserted to DBOUT (ACK) Asserted 5 TDSP -- ns 7 DBCK High to DBOUT Valid -- 42 ns 8 DBCK High to DBOUT Invalid 3 -- ns 9 DBIN Valid to DBCK Low (Set-up) 15 -- ns 10 DBCK Low to DBIN Invalid (Hold) 3 -- ns DBOUT (ACK) Asserted to First DBCK High 2 Tc -- ns DBOUT (ACK) Assertion Width 4.5 TDSP - 3 5 TDSP + 7 ns 11 Last DBCK Low of Read Register to First DBCK High of Next Command 7 TDSP + 10 -- ns 12 Last DBCK Low to DBOUT Invalid (Hold) 3 -- ns DBSEL setup to DBCK TDSP ns |
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