參數(shù)資料
型號(hào): TUSB5052B
廠商: Texas Instruments, Inc.
英文描述: USB to 2-Serial + 1-Parallel Controller With Configurable Optional Hub
中文描述: USB轉(zhuǎn)2 -串行接口1 -可配置可選并行控制器集線器
文件頁數(shù): 50/84頁
文件大?。?/td> 276K
代理商: TUSB5052B
7–2
7.1.3
LCR[2–1]: Line Control Registers (2 Registers)
These registers control the data communication format. The word length, number of stop bits, and parity type are
selected by writing the appropriate bits to the LCR.
FEN
BRK
FPTY
EPRTY
PRTY
STP
WL1
WL0
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
1:0
WL[1-0]
0
Specifies the word length for transmit and receive.
00b = 5 bits
01b = 6 bits
10b = 7 bits
11b = 8 bits
2
STP
0
Specifies the number of stop bits for transmit and receive.
STP = 0 1 stop bit (word length = 5, 6, 7, 8)
STP = 1 1.5 stop bits (word length = 5)
STP = 1 2 stop bits (word length = 6, 7, 8)
3
PRTY
0
Specifies whether parity is used.
PRTY = 0 No parity
PRTY = 1 Parity is generated.
4
EPRTY
0
Specifies whether even or odd parity is generated.
EPRTY = 0 Odd parity is generated (if PRTY = 1).
EPRTY = 1 Even parity is generated (if PRTY = 1).
5
FPTY
0
Selects the forced parity bit
FPTY = 0 Parity is not forced.
FPTY = 1 Parity bit is forced. If [EPRTY = 0], the parity bit is forced to 1.
6
BRK
0
This bit is the break-control bit.
BRK = 0 Normal operation
BRK = 1 Forces SOUT into break condition (Logic 0)
7
FEN
0
FIFO Enable. This bit is used to disable/enable the FIFO. To reset the FIFO, the MCU clears and then sets this bit.
FEN = 0
The FIFO is cleared and disabled. When disabled the selected receiver flow control is activated.
FEN = 1
The FIFO is enabled and it can receive data.
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