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LS7166 датащи(PDF) 19 Page - LSI Computer Systems

номер детали LS7166
подробное описание детали  24-BIT QUADRATURE COUNTER
PDF  19 Pages
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производитель  LSI [LSI Computer Systems]
домашняя страница  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7166 датащи(HTML) 19 Page - LSI Computer Systems

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/* Write data into 7166 Preset Register
Addr has address of 7166 counter
Data has 24 bit data to be written to PR register */
void Write_7166_PR(int Addr, unsigned long Data);
void Write_7166_PR(int Addr, unsigned long Data){
outp(CTRLMODE(Addr), MCR(Rst_BP));
outp(DATAMODE(Addr), (unsigned char)Data);
Data >>= 8;
outp(DATAMODE(Addr), (unsigned char)Data);
Data >>= 8;
outp(DATAMODE(Addr), (unsigned char)Data);
}
/* Read 7166 Output Latch
Addr has address of 7166 counter
Data returns 24 bit OL register value. */
unsigned long Read_7166_OL(int Addr);
unsigned long Read_7166_OL(int Addr){
unsigned long Data = 0;
outp(CTRLMODE(Addr), MCR(Rst_BP + Trf_CNTR_OL));
Data |= (unsigned long) inp(DATAMODE(Addr));
lrotr(Data,8);
Data |= (unsigned long) inp(DATAMODE(Addr));
lrotr(Data,8);
Data |= (unsigned long) inp(DATAMODE(Addr));
lrotr(Data,16);
return(Data);
}
/* Read Output Status Register
Addr has address of 7166 counter
returns OSR data */
unsigned long Read_7166_OSR(int Addr);
unsigned long Read_7166_OSR(int Addr){
return(inp(CNTRLMODE(Addr)));
}
7166-121508-19



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