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XR17D154IVTR-F 参数 Datasheet PDF下载

XR17D154IVTR-F图片预览
型号: XR17D154IVTR-F
PDF下载: 下载PDF文件 查看货源
内容描述: [Serial I/O Controller, 4 Channel(s), 0.78125MBps, CMOS, PQFP144, 20 X 20 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, TQFP-144]
分类和应用: PC
文件页数/大小: 69 页 / 840 K
品牌: EXAR [ EXAR CORPORATION ]
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XR17D154  
xr  
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART  
REV. 1.2.0  
FIGURE 26. TRANSMIT DATA INTERRUPT AT TRIGGER LEVEL  
START  
BIT  
STOP  
BIT  
DATA BITS (5-8)  
TX Data  
D0  
D1  
D2  
D3  
D4  
D5  
D6  
D7  
PARITY  
BIT  
NEXT  
5 DATA BITS  
DATA  
START  
BIT  
6 DATA BITS  
7 DATA BITS  
Clear at  
Above  
Trigger Level  
TX Interrupt at  
Transmit Trigger Level  
Set at Below  
Trigger Level  
BAUD RATE CLOCK of 16X or 8X  
TXNOFIFO-1  
FIGURE 27. RECEIVE DATA READY INTERRUPT AT TRIGGER LEVEL  
START  
BIT  
STOP  
BIT  
DATA BITS (5-8)  
RX Data Input  
D0  
D1  
D2  
D3  
D4  
D5  
D6 D7  
First byte that  
reaches the  
trigger level  
PARITY  
BIT  
RX Data Ready Interrupt at  
Receive Trigger Level  
De-asserted at  
below trigger level  
Asserted at  
above trigger  
level  
RXFIFO1  
64  
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