
AD5570
AD5570 to PIC16C6x/7x
The PIC16C6x/7x synchronous serial port (SSP) is configured
as an SPI master with the clock polarity bit set to 0. This is done
by writing to the synchronous serial port control register
(SSPCON). See the
PIC16/17 Microcontroller User Manual
. In
this example, I/O port RA1 is being used to pulse SYNC and
enable the serial port of the AD5570. This microcontroller
transfers only eight bits of data during each serial transfer
operation; therefore, two consecutive write operations are
needed. Figure 44 shows the connection diagram.
Rev. 0 | Page 22 of 24
EVALUATION BOARD
The AD5570 comes with a full evaluation board to aid designers
in evaluating the high performance of the part with a minimum
of effort. All that is required with the evaluation board is a
power supply, a PC, and an oscilloscope.
The AD5570 evaluation kit includes a populated, tested AD5570
printed circuit board. The evaluation board interfaces to the
parallel interface of the PC. Software is available with the
evaluation board, which allows the user to easily program the
AD5570. A schematic of the evaluation board is shown in
Figure 45. The software runs on any PC that has Microsoft
Windows 95/98/ME/2000 installed.
AD5570*
SCLK
DIN
SYNC
SDO/RC5
SCLK/RC3
RA1
PIC16C6x/7x*
*ADDITIONAL PINS OMITTEDFORCLARITY
SDO
SDI/RC4
0
An application note is available that gives full details on
operating the evaluation board.
Figure 44. AD5570 to PIC16C6x/7x Interface