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SCN68681 Datasheet(PDF) 22 Page - NXP Semiconductors |
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SCN68681 Datasheet(HTML) 22 Page - NXP Semiconductors |
22 / 28 page Philips Semiconductors Product specification SCN68681 Dual asynchronous receiver/transmitter (DUART) 1998 Sep 04 22 tRXS tRXH RxC (1X INPUT) RxD SD00093 Figure 12. Receive Timing TRANSMITTER ENABLED TxD D1 D2 D3 D4 D6 BREAK TxRDY (SR2) CSN (WRITE) D1 D2 D3 D4 D6 START BREAK STOP BREAK D5 WILL NOT BE TRANSMITTED CTSN1 (IP0) RTSN2 (OP0) OPR(0) = 1 OPR(0) = 1 NOTES: 1. Timing shown for MR2(4) = 1. 2. Timing shown for MR2(5) = 1. SD00118 Figure 13. Transmitter Timing D1 D2 D3 D4 D5 D6 D7 D8 RxD D6, D7, D8 WILL BE LOST RECEIVER ENABLED RxRDY (SR0) FFULL (SR1) RxRDY/ FFULL (OP4)2 CSN (READ) STATUS DATA D1 STATUS DATA D2 STATUS DATA D3 STATUS DATA D4 D5 WILL BE LOST OVERRUN (SR4) RESET BY COMMAND RTS1 (OP0) OPR(0) = 1 NOTES: 1. Timing shown for MR1(7) = 1. 2. Shown for OPCR(4) and MR1(6) = 0. SD00119 Figure 14. Receive Timing |
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