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ST7MC1K2-Auto 数据表(PDF) 178 Page - STMicroelectronics |
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ST7MC1K2-Auto 数据表(HTML) 178 Page - STMicroelectronics |
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178 / 371 page ![]() Obsolete Product(s) - Obsolete Product(s) On-chip peripherals ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto 178/371 LHL register coding: THEADER_MAX =57 LHL (7:2) represents the mantissa of (57 - THEADER) (see Table 77) LHL (1:0) represents the fraction (57 - THEADER) (see Table 78) Table 76. LHLR register description Bit Name Function 7:0 LHLR[7:0] LIN header length This is a read-only register, which is updated by hardware if one of the following conditions occurs: After each break detection, it is loaded with ‘FFh’ If a timeout occurs on THEADER, it is loaded with 00h After every successful LIN header reception (at the same time as the setting of LHDF bit), it is loaded with a value (LHL) which gives access to the number of bit times of the LIN header length (THEADER). The coding of this value is explained below. Table 77. LIN header mantissa values LHL[7:2] Mantissa (57 - THEADER) Mantissa (THEADER) 0h 0 57 1h 1 56 ... ... ... 39h 56 1 3Ah 57 0 3Bh 58 Never occurs ... ... ... 3Eh 62 Never occurs 3Fh 63 Initial value Table 78. LIN header fractions LHL[1:0] Fraction (57 - THEADER) 0h 0 1h 1/4 2h 1/2 3h 3/4 Obsolete Product(s) - Obsolete Product(s) |
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