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ST72361AR4-Auto Datasheet(PDF) 159 Page - STMicroelectronics |
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ST72361AR4-Auto Datasheet(HTML) 159 Page - STMicroelectronics |
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159 / 279 page  ST72361xx-Auto LINSCI serial communication interface (LIN master/slave) Doc ID 12468 Rev 3 159/279 15.5.2 Extended prescaler mode Two additional prescalers are available in extended prescaler mode. They are shown in Figure 79. ● An extended prescaler receiver register (SCIERPR) ● An extended prescaler transmitter register (SCIETPR) 15.5.3 Serial data format Word length may be selected as being either 8 or 9 bits by programming the M bit in the SCICR1 register (see Figure 78). The TDO pin is in low state during the start bit. The TDO pin is in high state during the stop bit. An idle character is interpreted as a continuous logic high level for 10 (or 11) full bit times. A break character is a character with a sufficient number of low level bits to break the normal data format followed by an extra “1” bit to acknowledge the start bit. Figure 78. Word length programming 15.5.4 Transmitter The transmitter can send data words of either 8 or 9 bits depending on the M bit status. When the M bit is set, word length is 9 bits and the 9th bit (the MSB) has to be stored in the T8 bit in the SCICR1 register. Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Start Bit Stop Bit Next Start Bit Idle Line Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Start Bit Stop Bit Next Start Bit Start Bit Idle Line Start Bit 9-bit Word length (M bit is set) 8-bit Word length (M bit is reset) Possible Parity Bit Possible Parity Bit Break Character Start Bit Extra ’1’ Data Character Break Character Start Bit Extra ’1’ Data Character Next Data Character Next Data Character |
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