AD6654BBC datasheet(68/88 Pages) AD

68 / 88 page

AD6654

Rev. 0 | Page 68 of 88

LSBFIRST Mode Using Single Byte Block Transfers

SerialWrite(0x98); //CRCF Start Address

SerialWrite(0x01);

SerialWrite(0x00);

SerialWrite(0x99); //CRCF Final Address

SerialWrite(0x01);

SerialWrite(N-1);

//N is the number of coefficients

for (i=0 ; i < N; i++) {

// writing registers

SerialWrite(0x9C);

//LSB written first

SerialWrite(0x01);

//data bits[7:0]

SerialWrite(coeff[i] & 0xFF);

SerialWrite(0x9D);

SerialWrite(0x01);

//data bits[15:8]

SerialWrite(coeff[i] >> 8 & 0xFF);

SerialWrite(0x9E);

//MSB written last

SerialWrite(0x01);

//data bits[23:16]

SerialWrite(coeff[i] >> 16 & 0xFF);

}

SerialWrite(0x98); //CRCF Start Address

SerialWrite(0x01);

SerialWrite(0x00);

SerialWrite(0x99); //CRCF Final Address

SerialWrite(0x01);

SerialWrite(N-1);

//N is the number of coefficients

for (i=0 ; i < N; i++) {

//reading registers

SerialWrite(0x9C);

//LSB readback first

SerialWrite(0x81);

//data bits[7:0]

Coeff[i] = SerialRead();

SerialWrite(0x9D);

SerialWrite(0x81);

//data bits[15:8]

Coeff[i] |= SerialRead() << 8;

SerialWrite(0x9E);

//MSB readback last

SerialWrite(0x81);

//data bits[23:16]

Coeff[i] |= SerialRead() << 16;

}

MSBFIRST Mode Using Multi Byte Block Transfers

SerialWrite(0x99); //CRCF Final Address

SerialWrite(0x02);

SerialWrite(N-1);

//N is the number of coefficients

SerialWrite(0x00);

for (i=0 ; i < N; i++) {

//writing registers

SerialWrite(0x9E);

SerialWrite(0x03);

//data bits[23:16]

SerialWrite(coeff[i] >> 16 & 0xFF);

//data bits[15:8]

SerialWrite(coeff[i] >> 8 & 0xFF);

//data bits[7:0]

SerialWrite(coeff[i] & 0xFF);

}

SerialWrite(0x99); //CRCF Final Address

SerialWrite(0x02);

SerialWrite(N-1);

//N is the number of coefficients

SerialWrite(0x00);

for (i=0 ; i < N; i++) {

//reading registers

SerialWrite(0x9E);

SerialWrite(0x83);

//data bits[23:16]

Coeff[i] = SerialRead() << 16;

//data bits[15:8]

Coeff[i] |= SerialRead() << 8;

//data bits[7:0]

Coeff[i] |= SerialRead();

}

LSBFIRST Mode Using Multi Byte Block Transfers

SerialWrite(0x98); //CRCF Start Address

SerialWrite(0x02);

SerialWrite(0x00);

SerialWrite(N-1);

//N is the number of coefficients

for (i=0 ; i < N; i++) {

//writing registers

SerialWrite(0x9C);

SerialWrite(0x03);

//data bits[7:0]

SerialWrite(coeff[i] & 0xFF);

//data bits[15:8]

SerialWrite(coeff[i] >> 8 & 0xFF);

//data bits[23:16]

SerialWrite(coeff[i] >> 16 & 0xFF);

}

SerialWrite(0x98); //CRCF Start Address

SerialWrite(0x02);

SerialWrite(0x00);

SerialWrite(N-1);

//N is the number of coefficients

for (i=0 ; i < N; i++) {

//reading registers

SerialWrite(0x9C);

SerialWrite(0x83);

//data bits[7:0]

Coeff[i] = SerialRead();

//data bits[15:8]

Coeff[i] |= SerialRead() << 8;

//data bits[23:16]

Coeff[i] |= SerialRead() << 16;

}

AD6654BBC Datenblatt(PDF) 68 Page - Analog Devices

AD6654BBC Datenblatt(HTML) 68 Page - Analog Devices

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