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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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H8S2245 датащи(PDF) 224 Page - Renesas Technology Corp |
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H8S2245 датащи(HTML) 224 Page - Renesas Technology Corp |
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224 / 818 page  Section 7 Data Transfer Controller Rev.3.00 Mar. 26, 2007 Page 182 of 772 REJ09B0355-0300 7.2.2 DTC Mode Register B (MRB) 7 CHNE 6 DISEL 5 — 4 — 3 — 0 — 2 — 1 — Bit Initial value : : R/W : — Unde- fined — Unde- fined — Unde- fined — Unde- fined — Unde- fined — Unde- fined — Unde- fined — Unde- fined MRB is an 8-bit register that controls the DTC operating mode. Bit 7—DTC Chain Transfer Enable (CHNE): Specifies chain transfer. With chain transfer, a number of data transfers can be performed consecutively in response to a single transfer request. In data transfer with CHNE set to 1, determination of the end of the specified number of transfers, clearing of the interrupt source flag, and clearing of DTCER is not performed. Bit 7 CHNE Description 0 End of DTC data transfer (activation waiting state is entered) 1 DTC chain transfer (new register information is read, then data is transferred) Bit 6—DTC Interrupt Select (DISEL): Specifies whether interrupt requests to the CPU are disabled or enabled after a data transfer. Bit 6 DISEL Description 0 After a data transfer ends, the CPU interrupt is disabled unless the transfer counter is 0 (the DTC clears the interrupt source flag of the activating interrupt to 0) 1 After a data transfer ends, the CPU interrupt is enabled (the DTC does not clear the interrupt source flag of the activating interrupt to 0) Bits 5 to 0—Reserved: These bits have no effect on DTC operation, and should always be written with 0 in a write. |
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