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

5.24.2.17 UART_LSR_IRDA Register

24.2.17.1 UART_LSR_IRDA Register (Offset = 14h) [reset = 83h]

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Table 5-2303 Instance Table

Instance Name	Physical Address
UART0	5230 0014h
UART1	5230 1014h
UART2	5230 2014h
UART3	5230 3014h
UART4	5230 4014h
UART5	5230 5014h

Figure 5-1132 UART_LSR_IRDA Name Register

31	30	29	28	27	26	25	24
RESERVED
NONE
0h
23	22	21	20	19	18	17	16
RESERVED
NONE
0h
15	14	13	12	11	10	9	8
RESERVED
NONE
0h
7	6	5	4	3	2	1	0
THR_EMPTY	STS_FIFO_FULL	RX_LAST_BYTE	FRAME_TOO_LONG	ABORT	CRC	STS_FIFO_E	RX_FIFO_E
R	R	R	R	R	R	R	R
1h	0h	0h	0h	0h	0h	1h	1h

Table 5-2304 UART_LSR_IRDA Register Field Descriptions

Bit	Field	Type	Reset	Description
31:8	RESERVED	NONE	0h	Reserved
7	THR_EMPTY	R	1h	1 Transmit hold register (TX FIFO) is empty. The transmission is not necessarily completed 0 Transmit holding register (TX FIFO) is not empty
6	STS_FIFO_FULL	R	0h	1 Status FIFO full 0 Status FIFO not full
5	RX_LAST_BYTE	R	0h	1 The RX FIFO (RHR) contains the last byte of the frame to be read.This bit is only set when the last byte of a frame is available to be read. It is used to determine the frame boundary. It is cleared on a single read of the LSR register 0 The RX FIFO (RHR) does not contain the last byte of the frame to be read
4	FRAME_TOO_LONG	R	0h	1 Frame-too-long error in the frame at the top of the STATUS FIFO, [next character to be read]. This bit is set to 1 when a frame exceeding the maximum length (set by RXFLH and RXFLL registers) has been received. When this error is detected, current frame reception is terminated. Reception is stopped until the next START flag is detected 0 No frame-too-long error in frame
3	ABORT	R	0h	1 Abort pattern is received. SIR & MIR: Abort pattern. FIR: Illegal symbol 0 No abort pattern error in frame
2	CRC	R	0h	1 CRC error in the frame at the top of the STATUS FIFO (next character to be read) 0 No CRC error in frame
1	STS_FIFO_E	R	1h	1 Status FIFO empty 0 Status FIFO not empty
0	RX_FIFO_E	R	1h	1 At least one data character in the RX FIFO 0 No data in the receive FIFO