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L9924TR датащи(PDF) 80 Page - STMicroelectronics |
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L9924TR датащи(HTML) 80 Page - STMicroelectronics |
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80 / 85 page ![]() SPI interface L9924 80/85 DocID029638 Rev 2 Read phase register (0x13) 4C0000 025138 GSW: Key active DATA: as before Phase notification is no longer present because of previous read operation. Data are not significant Wait 22 ms (4 phase periods plus a 2 ms margin) Write 0x10 to unlock register (0x01): unlock SW reset bit 840010 02C000 GSW: – Key active – Phase notification (new data available) Write 0x10 to system operation register (0x02): SW reset cmd 880010 02C000 GSW: – Key active – Phase notification (new data available – reg 0x13 not read) Remove L key Write 1 to unlock register (0x01): unlock stand by bit 840001 04C000 GSW: – CP-LOW (because of prev SW reset) – Phase notification (new data available – reg 0x13 not read) Key flag no longer present Write 1 to system operation register (0x02): unlock stand by bit 880001 04C000 See above Table 62. SPI sequence examples (continued) Operation MOSI MISO Comment |
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