參數(shù)資料
型號: XR16C864IQ-F
廠商: Exar Corporation
文件頁數(shù): 24/51頁
文件大?。?/td> 0K
描述: IC UART FIFO 128B QUAD 100QFP
標(biāo)準(zhǔn)包裝: 66
特點: *
通道數(shù): 4,QUART
FIFO's: 128 字節(jié)
規(guī)程: RS232,RS485
電源電壓: 2.97 V ~ 5.5 V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 100-BQFP
供應(yīng)商設(shè)備封裝: 100-QFP(14x20)
包裝: 托盤
其它名稱: 1016-1277
XR16C864
30
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
REV. 2.2.0
4.6
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.
TABLE 11: TRANSMIT AND RECEIVE FIFO TRIGGER LEVEL SELECTION
FCTR
BIT-5
FCTR
BIT-4
FCR
BIT-7
FCR
BIT-6
FCR
BIT-5
FCR
BIT
-4
RECEIVE
TRIGGER LEVEL
TRANSMIT
TRIGGER
LEVEL
COMPATIBILITY
0
1
0
1
0
1
0
1 (default)
4
8
14
1 (default)
Table-A. 16C550, 16C2550,
16C2552, 16C554, 16C580
compatible.
0
1
0
1
0
1
0
1
0
1
0
1
0
1
8
16
24
28
16
8
24
30
Table-B. 16C650A compatible.
1
0
1
0
1
0
1
0
1
0
1
0
1
8
16
56
60
8
16
32
56
Table-C. 16C654 compatible.
1
X
Programmable
via TRG
register.
FCTR[7] = 0.
Programmable
via TRG
register.
FCTR[7] = 1.
Table-D. 16L2750, 16C2850,
16C2852, 16C850, 16C864
compatible.
BIT-1
BIT-0
WORD LENGTH
0
5 (default)
0
1
6
1
0
7
1
8
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