SPRUJ42 User guide | 德州仪器 TI.com.cn

SPRUJ42E March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1

PRODUCTION DATA

5.11.2.12 LIN_BRSR Register

11.2.12.1 LIN_BRSR Register (Offset = 2Ch) [reset = 0h]

The BRSR register is used to configure the baud rate of the LIN module.

Table 5-1314 Instance Table

Instance Name	Physical Address
LIN0	5240 002Ch
LIN1	5240 102Ch
LIN2	5240 202Ch
LIN3	5240 302Ch
LIN4	5240 402Ch

Figure 5-650 LIN_BRSR Name Register

31	30	29	28	27	26	25	24
RESERVED_1	U			M
R	R/W			R/W
0h	0h			0h
23	22	21	20	19	18	17	16
SCI_LIN_PSH
R/W
0h
15	14	13	12	11	10	9	8
SCI_LIN_PSL
R/W
0h
7	6	5	4	3	2	1	0
SCI_LIN_PSL
R/W
0h

Table 5-1315 LIN_BRSR Register Field Descriptions

Bit	Field	Type	Reset	Description
31	RESERVED_1	R	0h	Reserved
30:28	U	R/W	0h	Superfractional Divider Selection. [U] These bits are an additional fractional part for the baudrate specification. These bits allow a super fine tuning of the fractional baudrate with 7 more intermediate values for each of the M fractional divider values. See the Superfractional Divider section for more details.
27:24	M	R/W	0h	SCI/LIN 4-bit Fractional Divider Selection. [M] These bits are effective in LIN or SCI asynchronous mode. These bits are used to select a baud rate for the SCI/LIN module, and they are a fractional part for the baud rate specification. The M divider allows fine-tuning of the baud rate over the P prescaler with 15 additional intermediate values for each of the P integer values.
23:16	SCI_LIN_PSH	R/W	0h	PRESCALER P [High Bits]. SCI/LIN 24-bit Integer Prescaler Selection. These bits are used to select a baudrate for the SCI/LIN module. These bits are effective in LIN mode and SCI compatible mode. The SCI/LIN has an internally generated serial clock determined by the LIN module input clock and the prescalers P and M in this register. The SCI/LIN uses the 24-bit integer prescaler P value to select 1 of over 16,700,000 available baud rates. The additional 4-bit fractional prescaler M refines the baudate selection.
15:0	SCI_LIN_PSL	R/W	0h	PRESCALER P [Low Bits]. SCI/LIN 24-bit Integer Prescaler Selection. These bits are used to select a baudrate for the SCI/LIN module. These bits are effective in LIN mode and SCI compatible mode. The SCI/LIN has an internally generated serial clock determined by the LIN module input clock and the prescalers P and M in this register. The SCI/LIN uses the 24-bit integer prescaler P value to select 1 of over 16,700,000 available baud rates. The additional 4-bit fractional prescaler M refines the baudate selection.