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| 型號(hào)： | LPC47N217-JN |
| 廠(chǎng)商： | SMSC Corporation |
| 英文描述： | 64 - PIN SUPUR I/O WITH LPC INTERFACE |
| 中文描述： | 64 -針蘇布爾的I / LPC接口? |
| 文件頁(yè)數(shù)： | 69/228頁(yè) |
| 文件大小： | 1269K |
| 代理商： | LPC47N217-JN |
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Bit 4
Even Parity Select bit. When bit 3 is a logic “1” and bit 4 is a logic “0”, an odd number of logic “1”’s is transmitted or
checked in the data word bits and the parity bit. When bit 3 is a logic “1” and bit 4 is a logic “1” an even number of
bits is transmitted and checked.
SMSC DS – LPC47M192
Page 69
Rev. 03/30/05
DATASHEET
Bit 5
This bit is the Stick Parity bit. When parity is enabled it is used in conjunction with bit 4 to select Mark or Space
Parity. When LCR bits 3, 4 and 5 are 1 the Parity bit is transmitted and checked as a 0 (Space Parity). If bits 3 and 5
are 1 and bit 4 is a 0, then the Parity bit is transmitted and checked as 1 (Mark Parity). If bit 5 is 0 Stick Parity is
disabled.
Bit 6
Set Break Control bit. When bit 6 is a logic “1”, the transmit data output (TXD) is forced to the Spacing or logic “0”
state and remains there (until reset by a low level bit 6) regardless of other transmitter activity. This feature enables
the Serial Port to alert a terminal in a communications system.
Bit 7
Divisor Latch Access bit (DLAB). It must be set high (logic “1”) to access the Divisor Latches of the Baud Rate
Generator during read or write operations. It must be set low (logic “0”) to access the Receiver Buffer Register, the
Transmitter Holding Register, or the Interrupt Enable Register.
MODEM CONTROL REGISTER (MCR)
Address Offset = 4H, DLAB = X, READ/WRITE
This 8 bit register controls the interface with the MODEM or data set (or device emulating a MODEM). The contents
of the MODEM control register are described below.
Bit 0
This bit controls the Data Terminal Ready (nDTR) output. When bit 0 is set to a logic “1”, the nDTR output is forced
to a logic “0”. When bit 0 is a logic “0”, the nDTR output is forced to a logic “1”.
Bit 1
This bit controls the Request To Send (nRTS) output. Bit 1 affects the nRTS output in a manner identical to that
described above for bit 0.
Bit 2
This bit controls the Output 1 (OUT1) bit. This bit does not have an output pin and can only be read or written by the
CPU.
Bit 3
Output 2 (OUT2). This bit is used to enable an UART interrupt. When OUT2 is a logic "0", the serial port interrupt
output is forced to a high impedance state - disabled. When OUT2 is a logic "1", the serial port interrupt outputs are
enabled.
Bit 4
This bit provides the loopback feature for diagnostic testing of the Serial Port. When bit 4 is set to logic “1”, the
following occur:
1. The TXD is set to the Marking State(logic “1”).
2. The receiver Serial Input (RXD) is disconnected.
3. The output of the Transmitter Shift Register is “l(fā)ooped back” into the Receiver Shift Register input.
4. All MODEM Control inputs (nCTS, nDSR, nRI and nDCD) are disconnected.
5. The four MODEM Control outputs (nDTR, nRTS, OUT1 and OUT2) are internally connected to the four
MODEM Control inputs (nDSR, nCTS, RI, DCD).
6. The Modem Control output pins are forced inactive high.
7. Data that is transmitted is immediately received.
This feature allows the processor to verify the transmit and receive data paths of the Serial Port. In the diagnostic
mode, the receiver and the transmitter interrupts are fully operational. The MODEM Control Interrupts are also
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LPC47N217-JV | 功能描述:輸入/輸出控制器接口集成電路 64-Pin Mobile I/O RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| LPC47N217N | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:64-Pin Super I/O with LPC Interface |
| LPC47N217N-ABZJ | 功能描述:輸入/輸出控制器接口集成電路 3.3volts 5V tolerant RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| LPC47N217N-ABZJ-TR | 功能描述:接口 - 專(zhuān)用 56 Pin Super I/O LPC Interface RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| LPC47N217N-JV | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:64-Pin Super I/O with LPC Interface |
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