參數(shù)資料
型號(hào): NS16C2752
廠商: National Semiconductor Corporation
英文描述: Dual UART with 16-byte/64-byte FIFOs and up to 5 Mbit/s Data Rate
中文描述: 雙UART與16-byte/64-byte FIFO和高達(dá)5 Mbit / s的數(shù)據(jù)速率
文件頁數(shù): 18/43頁
文件大?。?/td> 881K
代理商: NS16C2752
6.0 Register Set
(Continued)
6.7 MODEM CONTROL REGISTER (MCR)
This register controls the interface with the MODEM or data
set (or a peripheral device emulating a MODEM). There is a
clock divider for each channel. Each is capable of taking a
common clock input from DC to 80 MHz and dividing the
clock frequency by 1 (default) or 4 depending on the MCR[7]
value. The clock divider and the internal clock division flow is
shown in
Figure 1
.
TABLE 11. MCR (0x4)
Bit
Bit Name
R/W
Def
R/W
0
Description
7
Clk Divider
Sel
Clock Divider Select
This bit selects the clock divider from crystal or oscillator input. The divider output
connects to the Baud Rate Generator.
1 = Divide XIN frequency by 4.
0 = Divide XIN frequency by 1 (default).
Infrared Encoder/Decoder Select
This bit selects standard modem or IrDA interface.
1 = Infrared IrDA Tx/Rx. The data input and output levels complies to the IrDA infrared
interface. The Tx output is at logic 0 during the idle state.
0 = Standard modem Tx/Rx (default).
Xon-Any Enable
This bit enables Xon-Any feature.
1 = Enable Xon-Any function. When Xon/Xoff flow control is enabled, the transmission
resumes when any character is received. The received character is loaded into the Rx
FIFO except for Xon or Xoff characters.
0 = Disable Xon-Any function (default).
6
IR Mode
Sel
R/W
0
5
Xon-Any
Ena
R/W
0
20204803
FIGURE 1. Internal Clock Dividers
N
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參數(shù)描述
NS16C2752TVA 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual UART with 16-byte/64-byte FIFOs and up to 5 Mbit/s Data Rate
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NS16C2752TVAX/NOPB 功能描述:UART 接口集成電路 Dual UART w/ 64-byte 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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NS16C2752TVS/NOPB 功能描述:UART 接口集成電路 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