TABLE 13: TRANSMIT AND R
參數(shù)資料
型號(hào): XR20M1280L32-0A-EB
廠(chǎng)商: Exar Corporation
文件頁(yè)數(shù): 29/63頁(yè)
文件大小: 0K
描述: EVAL BOARD FOR XR20M1280L32
產(chǎn)品培訓(xùn)模塊: XR21V141x Full-Speed USB UART Family
UARTs with Integrated Level Shifters
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,UART
已用 IC / 零件: XR20M1280L32
已供物品:
其它名稱(chēng): 1016-1630
TABLE 13: TRANSMIT AND RECEIVE FIFO TRIGGER TABLE AND LEVEL SELECTION
TRIGGER
TABLE
BIT-5
BIT-4
BIT-7
BIT-6
BIT-5
BIT
-4
RECEIVE
TRIGGER LEVEL
TRANSMIT
TRIGGER
LEVEL
COMPATIBILITY
Table-A
0
1
0
1
0
1
0
1 (default)
4
8
14
1 (default)
16C550, 16x255x,
16x554, 16x57x,
16x58x
Table-B
0
1
0
1
0
1
0
1
0
1
0
1
0
1
8
16
24
28
16
8
24
30
16C650A, 16L651,
16x265x, 16x564
Table-C
1
0
1
0
1
0
1
0
1
0
1
0
1
8
16
56
60
8
16
32
56
16x654
Table-D
1
X
Programmable
via TRG
register.
FCTR[7] = 0.
Programmable
via TRG
register.
FCTR[7] = 1.
16x275x, 16C285x,
16C850, 16C854,
16C864
XR20M1280
35
REV. 1.0.0
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
3.6
Line Control Register (LCR) - Read/Write
The Line Control Register is used to specify the asynchronous data communication format. The word or
character length, the number of stop bits, and the parity are selected by writing the appropriate bits in this
register.
LCR[1:0]: TX and RX Word Length Select
These two bits specify the word length to be transmitted or received.
WORD LENGTH
0
5 (default)
0
1
6
1
0
7
1
8
FCTR
FCR
BIT-1
BIT-0
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