参数资料
型号: SC16C852VIET,115
厂商: NXP Semiconductors
文件页数: 21/55页
文件大小: 0K
描述: IC UART DUAL W/FIFO 36TFBGA
标准包装: 1,000
特点: 可编程
通道数: 2,DUART
FIFO's: 128 字节
规程: RS485
电源电压: 2.5V
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: 带卷 (TR)
其它名称: 935282518115
SC16C852VIET-G
SC16C852VIET-G-ND
SC16C852V
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 21 January 2011
28 of 55
NXP Semiconductors
SC16C852V
Dual UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface
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.
Table 16.
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 17).
2
LCR[2]
Stop bits. The length of stop bit is specified by this bit in conjunction with the
programmed word length (see Table 18).
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 19).
logic 0 or cleared = default condition
Table 17.
LCR[5:3] parity selection
LCR[5]
LCR[4]
LCR[3]
Parity selection
X
0
no parity
X
0
1
odd parity
01
1even parity
00
1forced parity ‘1’
11
1forced parity ‘0’
Table 18.
LCR[2] stop bit length
LCR[2]
Word length (bits)
Stop bit length (bit times)
0
5, 6, 7, 8
1
15
11
2
1
6, 7, 8
2
Table 19.
LCR[1:0] word length
LCR[1]
LCR[0]
Word length (bits)
00
5
01
6
10
7
11
8
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