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AD5390 Datasheet(PDF) 36 Page - Analog Devices |
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AD5390 Datasheet(HTML) 36 Page - Analog Devices |
36 / 44 page AD5390/AD5391/AD5392 Data Sheet Rev. E | Page 36 of 44 AD539x to PIC16C6x/7x The PIC16C6x/7x synchronous serial port (SSP) is configured as an SPI master with the clock polarity bit = 0. This is done by writing to the synchronous serial port control register (SSPCON)—see the PIC16/17 Microcontroller User Manual. In Figure 38, I/O port RA1 is used to pulse SYNC and enable the serial port of the AD539x. This microcontroller transfers only eight bits of data during each serial transfer operation; therefore, three consecutive read/write operations are needed, depending on the mode. Figure 38 shows the connection diagram. DVDD PIC16C6x/7x AD539x RESET SDO SDI/RC4 DIN SDO/RC5 SCLK SCK/RC3 RA1 SYNC SPI/I2C Figure 38. AD539x to PIC16C6x/7x Interface AD539x to 8051 The AD539x requires a clock synchronized to the serial data. The 8051 serial interface must, therefore, be operated in Mode 0. In this mode, serial data enters and exits through RxD and a shift clock is output on TxD. Figure 39 shows how the 8051 is connected to the AD539x. Because the AD539x shifts data out on the rising edge of the shift clock and latches data in on the falling edge, the shift clock must be inverted. The AD539x requires its data with the MSB first. Because the 8051 outputs the LSB first, the transmit routine must take this into account. DVDD DVDD 8xC51 SDO DIN AD539x RESET RxD SCLK TxD P1.1 SYNC SPI/I2C Figure 39. AD539x to 8051 Interface AD539x to ADSP2101 Figure 40 shows a serial interface between the AD539x and the ADSP2101. The ADSP2101 should be set up to operate in the SPORT transmit alternate framing mode. The ADSP2101 SPORT is programmed through the SPORT control register and should be configured as follows: internal clock operation, active low framing, and 16-bit word length. Transmission is initiated by writing a word to the Tx register after the SPORT has been enabled. DVDD ADSP2101 AD539x RESET DIN DT SDO DR SCLK SCK TFS RFS SYNC SPI/I2C Figure 40. AD539x to ADSP2101 Interface |
Similar Part No. - AD5390_12 |
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Similar Description - AD5390_12 |
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