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| 型號(hào)： | SC16C2552 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Dual UART with 16-byte transmit and receive FIFOs |
| 中文描述： | 雙UART具有16字節(jié)的傳輸和接收FIFO |
| 文件頁(yè)數(shù)： | 18/38頁(yè) |
| 文件大小： | 579K |
| 代理商： | SC16C2552 |
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Philips Semiconductors
SC16C2552
Dual UART with 16-byte transmit and receive FIFOs
Product data
Rev. 03 — 20 June 2003
18 of 38
9397 750 11636
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
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 12:
Bit
7
Line Control Register bits description
Symbol
Description
LCR[7]
Divisor latch enable. The internal baud rate counter latch and
Enhance Feature mode enable.
Logic 0 = Divisor latch disabled (normal default condition).
Logic 1 = Divisor latch enabled.
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.
LCR[5-3]
Programs the parity conditions (see
Table 13
).
LCR[2]
Stop bits. The length of stop bit is specified by this bit in
conjunction with the programmed word length (see
Table 14
).
Logic 0 or cleared = default condition.
LCR[1-0]
Word length bits 1, 0. These two bits specify the word length to be
transmitted or received (see
Table 15
).
Logic 0 or cleared = default condition.
6
5-3
2
1-0
Table 13:
LCR[5]
X
X
0
0
1
LCR[5] parity selection
LCR[4]
X
0
1
0
1
LCR[3]
0
1
1
1
1
Parity selection
no parity
ODD parity
EVEN parity
force parity ‘1’
forced parity ‘0’
Table 14:
LCR[2]
0
1
1
LCR[2] stop bit length
Word length
5, 6, 7, 8
5
6, 7, 8
Stop bit length (bit times)
1
1-
1
2
2
Table 15:
LCR[1]
0
0
1
1
LCR[1-0] word length
LCR[0]
0
1
0
1
Word length
5
6
7
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC16C2552B | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs |
| SC16C2552BIA44 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C2552BIA44,512 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C2552BIA44,518 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 2CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C2552BIA44,529 | 功能描述:UART 接口集成電路 2CH. UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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