参数资料
型号: XR16M570IB25-F
厂商: Exar Corporation
文件页数: 24/50页
文件大小: 0K
描述: IC UART FIFO 16B 25BGA
标准包装: 714
特点: *
通道数: 1,UART
FIFO's: 16 字节
规程: RS232,RS422,RS485
电源电压: 1.62 V ~ 3.63 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 25-WFBGA
供应商设备封装: 25-BGA(3x3)
包装: 托盘
XR16M570
30
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO
REV. 1.0.1
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.
LCR[2]: TX and RX Stop-bit Length Select
The length of stop bit is specified by this bit in conjunction with the programmed word length.
LCR[3]: TX and RX Parity Select
Parity or no parity can be selected via this bit. The parity bit is a simple way used in communications for data
integrity check. See Table 10 for parity selection summary below.
Logic 0 = No parity.
Logic 1 = A parity bit is generated during the transmission while the receiver checks for parity error of the
data character received.
TABLE 9: TRANSMIT AND RECEIVE FIFO TRIGGER TABLE AND LEVEL SELECTION
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
0
1
0
1
1(default)
4
8
14
1(default)
4
8
14
16L570
BIT-1
BIT-0
WORD LENGTH
0
5 (default)
01
6
10
7
11
8
BIT-2
WORD
LENGTH
STOP BIT LENGTH
(BIT TIME(S))
0
5,6,7,8
1 (default)
1
5
1-1/2
1
6,7,8
2
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