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ST7MC1K2-Auto 数据表(PDF) 174 Page - STMicroelectronics |
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ST7MC1K2-Auto 数据表(HTML) 174 Page - STMicroelectronics |
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174 / 371 page ![]() Obsolete Product(s) - Obsolete Product(s) On-chip peripherals ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto 174/371 SCI control register 3 (SCICR3) SCICR3 Reset value: 0000 0000 (00h) 7 654 32 10 LDUM LINE, LSLV LASE LHDM LHIE LHDF LSF R/W R/W R/W R/W R/W R/W R/W Table 71. SCICR3 register description Bit Name Function 7 LDUM LIN divider update method This bit is set and cleared by software and is also cleared by hardware (when RDRF = 1). It is only used in LIN slave mode. It determines how the LIN divider can be updated by software. 0: LDIV is updated as soon as LPR is written (if no auto synchronization update occurs at the same time) 1: LDIV is updated at the next received character (when RDRF = 1) after a write to the LPR register Notes: - If no write to LPR is performed between the setting of LDUM bit and the reception of the next character, LDIV is updated with the old value. - After LDUM has been set, it is possible to reset the LDUM bit by software. In this case, LDIV can be modified by writing into LPR/LPFR registers. 6:5 LINE, LSLV LIN mode enable bits These bits configure the LIN mode: 0x: LIN mode disabled 10: LIN master mode 11: LIN slave mode The LIN master configuration enables the cabability to send LIN synch breaks (13 low bits) using the SBK bit in the SCICR2 register. The LIN slave configuration enables: The LIN slave baud rate generator. The LIN divider (LDIV) is then represented by the LPR and LPFR registers. The LPR and LPFR registers are read/write accessible at the address of the SCIBRR register and the address of the SCIETPR register. Management of LIN headers LIN synch break detection (11-bit dominant) LIN wake-up method (see LHDM bit) instead of the normal SCI wake-up method Inhibition of break transmission capability (SBK has no effect) LIN parity checking (in conjunction with the PCE bit) 4 LASE LIN auto synch enable This bit enables the auto synch unit (ASU). It is set and cleared by software. It is only usable in LIN slave mode. 0: Auto synch unit disabled 1: Auto synch unit enabled Obsolete Product(s) - Obsolete Product(s) |
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