AD5570ARS datasheet(22/24 Pages) AD

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AD5570

Rev. 0 | Page 22 of 24

AD5570 to PIC16C6x/7x

EVALUATION BOARD

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.

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 OMITTED FOR CLARITY

SDO

SDI/RC4

An application note is available that gives full details on

operating the evaluation board.

Figure 44. AD5570 to PIC16C6x/7x Interface

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