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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AT83SND2CMP3 데이터시트(PDF) 66 Page - ATMEL Corporation |
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AT83SND2CMP3 데이터시트(HTML) 66 Page - ATMEL Corporation |
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66 / 97 page  66 AT83SND2CMP3 7524B–MP3–05/06 Interrupt Description As shown in Figure 56, the MMC controller implements eight interrupt sources reported in MCBI, EORI, EOCI, EOFI, F2FI, F1FI, and F2EI flags in MMCINT register. These flags are detailed in the previous sections. All these sources are maskable separately using MCBM, EORM, EOCM, EOFM, F2FM, F1FM, and F2EM mask bits respectively in MMMSK register. The interrupt request is generated each time an unmasked flag is set, and the global MMC controller interrupt enable bit is set (EMMC in IEN1 register). Reading the MMINT register automatically clears the interrupt flags (acknowledgment). This implies that register content must be saved and tested interrupt flag by interrupt flag to be sure not to forget any interrupts. Figure 56. MMC Controller Interrupt System MMC Interface Interrupt Request MCBI MMINT.7 EOCM MMMSK.5 EMMC IEN1.0 MCBM MMMSK.7 EORM MMMSK.6 EOFI MMINT.4 F2FM MMMSK.3 EOFM MMMSK.4 EORI MMINT.6 F2FI MMINT.3 EOCI MMINT.5 F2EM MMMSK.1 F1FM MMMSK.2 F1EI MMINT.0 F1EM MMMSK.0 F1FI MMINT.2 F2EI MMINT.1 |
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