参数资料
型号: SC16C850IET,157
厂商: NXP Semiconductors
文件页数: 20/55页
文件大小: 0K
描述: IC UART SINGLE W/FIFO 36-TFBGA
标准包装: 2,450
特点: 可编程
通道数: 1,UART
FIFO's: 128 字节
规程: RS485
电源电压: 2.5 V ~ 3.3 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: 36-TFBGA
供应商设备封装: 36-TFBGA(3.5x3.5)
包装: 托盘
其它名称: 935284685157
SC16C850IET
SC16C850IET-ND
SC16C850
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 11 November 2010
27 of 55
NXP Semiconductors
SC16C850
2.5 to 3.3 V UART with 128-byte FIFOs and IrDA encoder/decoder
7.5 Line Control Register (LCR)
The Line Control Register is used to specify the asynchronous data communication
format. The word length, the number of stop bits, and the parity are selected by writing the
appropriate bits in this register.
0
ISR[0]
INT status.
logic 0 = an interrupt is pending and the ISR contents may be used as a
pointer to the appropriate interrupt service routine
logic 1 = no interrupt pending (normal default condition)
Table 14.
Interrupt Status Register bits description …continued
Bit
Symbol
Description
Table 15.
Line Control Register bits description
Bit
Symbol
Description
7
LCR[7]
Divisor latch enable. The internal baud rate counter latch and Enhanced
Feature mode enable.
logic 0 = divisor latch disabled (normal default condition)
logic 1 = divisor latch enabled
6
LCR[6]
Set break. When enabled, the Break control bit causes a break condition to
be transmitted (the TX output is forced to a logic 0 state). This condition
exists until disabled by setting LCR[6] to a logic 0.
logic 0 = no TX break condition (normal default condition)
logic 1 = forces the transmitter output (TX) to a logic 0 for alerting the
remote receiver to a line break condition
5:3
LCR[5:3]
Programs the parity conditions (see Table 16).
2
LCR[2]
Stop bits. The length of stop bit is specified by this bit in conjunction with the
programmed word length (see Table 17).
logic 0 or cleared = default condition
1:0
LCR[1:0]
Word length bits 1, 0. These two bits specify the word length to be
transmitted or received (see Table 18).
logic 0 or cleared = default condition
Table 16.
LCR[5:3] parity selection
LCR[5]
LCR[4]
LCR[3]
Parity selection
XX
0
no parity
0
01odd parity
0
11even parity
1
0
1
forced parity ‘1’
1
forced parity ‘0’
Table 17.
LCR[2] stop bit length
LCR[2]
Word length (bits)
Stop bit length (bit times)
0
5, 6, 7, 8
1
15
11
2
16, 7, 8
2
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