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CXD3003 Datasheet(PDF) 109 Page - Sony Corporation |
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CXD3003 Datasheet(HTML) 109 Page - Sony Corporation |
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109 / 137 page  – 109 – CXD3003R §5-17. DIRC Input Pin The $2 command register can be changed by operating the DIRC input pin. Using the DIRC pin simplifies serial data transfer during TRKJMP. Fig. 5-22 shows $2 command register changes produced by DIRC pin changes. Also, Timing Chart 5-23 shows DIRC-based operations during TRKJMP. High level must be input to the DIRC pin when the XRST pin rises from low to high. Q3 0 0 1 1 Q2 0 1 0 1 Servo status OFF ON FWD JMP REV JMP Q3 1 1 1 1 Q2 1 0 1 0 Servo status REV JMP FWD JMP REV JMP FWD JMP Q3 0 0 0 0 Q2 1 1 1 1 Servo status ON ON ON ON Q1 0 0 1 1 Q0 0 1 0 1 Servo status OFF ON FWD MOV REV MOV Q1 0 0 1 1 Q0 0 1 0 1 Servo status OFF ON FWD MOV REV MOV Q1 0 0 1 1 Q0 1 1 0 1 Servo status ON ON FWD MOV REV MOV DIRC TRK SLD Q3, Q2, Q1 and Q0 correspond to D19, D18, D17 and D16 of $2. Fig. 5-22. $28 latch ON OFF OFF ON ON OFF ON OFF $2C latch XLAT DIRC FWD JUMP REV JUMP TRK SERVO SLD SERVO Timing Chart 5-23. |
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