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SCN68652AC2A44 Datasheet(PDF) 10 Page - NXP Semiconductors |
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SCN68652AC2A44 Datasheet(HTML) 10 Page - NXP Semiconductors |
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10 / 28 page  Philips Semiconductors Product specification SCN2652/SCN68652 Multi-protocol communications controller (MPCC) 1995 May 01 10 ASSEMBLE CHARACTER IN RxSR, STRIP VRC IF SPECIFIED, ACCUMULATE CRC IF SPECIFIED A INITIALIZE PCSAR, PCR RxE = 1? ANY RECEIVER STATUS BIT 0 → 1 ? PROCESSOR RxE = 1 NO SYNC DETECT1 IN CCSR? YES NO S/F = 1 FOR ONE RxC BIT TIME (1) SYNCs ARE ASSEMBLED (2) OVERRUN (ROVRN) CAUSES LOSS OF SUBSEQUENT CHARACTERS STRIP SYNC (PCSAR13) = 1? NO NO RxSR → RxDB RxSA = 1 (PROCESSOR SHOULD READ AND EXAMINE RDSRH – ROVRN, RERR (IF VRC SPECIFIED) RxDA = 1 (PROCESSOR SHOULD READ RxDB) YES SYNC DETECT2 IN CCSR? NO SYNC DETECT IN CCSR? YES YES YES NO RxA = 1 YES RxE = 0? YES NO A RxE = 0 WHEN LAST CHARACTER HAS BEEN SERVICED NOTES: 1. Test made every RxC time. 2. Test made on Rx character boundary. SD00062 Figure 7. BCP Receive |
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