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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M38045F2HKP датащи(PDF) 230 Page - Renesas Technology Corp |
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M38045F2HKP датащи(HTML) 230 Page - Renesas Technology Corp |
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230 / 387 page  2-106 APPLICATION 2.5 Multi-master I2C-BUS interface Rev.1.00 Jan 14, 2005 REJ09B0212-0100Z 3804 Group (Spec.H) ➅ Generating of STOP condition Confirm correct completion of communication at ➄ before generating the STOP condition. After confirming correct completion, store the received data (upper data). Clear the ACK bit (bit 6 of address 001516) to “0”, in which ACK is returned, and generate the STOP condition. The communication mode is set to the slave receive mode by the occurrence of STOP condition. When the MST bit (bit 7 of address 001316) is “0”, return to the process ➀, because other devices have priority to communicate. Fig. 2.5.27 Generating of STOP condition AL (address 001316), bit 3 ? 1 (detected) 0 (not detected) S1 (address 001316) ← 110100002 End Re-transmission preparation Receive data buffer ← S0 (address 001116) S2 (address 001516) ← 100001012 BB (address 001316), bit5 ? (Note) 0 (bus free) 1 (bus busy) PIN (address 001316), bit 4 ? 1 (STOP condition) 0 (upper data transmitted) Note: Use the branch bit instruction to check bus busy. Also, execute the time out processing separately, if neccessary. 6 • Judgment of bus hold • Judgment of arbitration lost detection • Set “ACK is returned” • Judgment of bus busy • STOP condition occurrence • Receive data read and save |
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