EVB71122_15 Datasheet, PDF (26/31 Pages) Melexis Microelectronic Systems – 300 to 930MHz Receiver Evaluation Board Description

EVB71122
300 to 930MHz Receiver
Evaluation Board Description
5 Hardware and Software Requirements
The PC programming software has been developed for Windows XP and has been tested for later Windows
versions. The program uses TVicPort I/O driver to interface to the parallel port.
The EVB71122 can be used either with a USB-SPI converter connected to the PC’s USB port or it can be
directly connected to the PC’s printer port (LPT). If the LPT port is used then port addresses 0x278, 0x378
and 0x3BC (hexadecimal) are supported. A programming cable with a male 25-pole SUB-D connector can be
purchased together with the evaluation board EVB71122.
The following LPT ports can be connected to the corresponding IC pins:
LPT port
BUSY (pin11)
GND (pin18-25)
D1 (pin3)
D2 (pin4)
D0 (pin2)
Direction
←

→
→
→
IC pin
MFO (pin 23)
GND
A/SCLK (pin 19)
B/SDTA (pin 18)
C/SDEN (pin17)
Cable pin
Connected (1)
Connected (2)
Connected (3)
Connected (4)
Connected (5)
If the PC’s USB port is used, a USB-SPI converter is required (Fig. 10). It is available on request or can be
purchased together with the evaluation board EVB71122.
Note that pin 7 of the MLX71122 (SPISEL) is connected to logic HIGH on the EVB71122. This is to set the
receiver to SPI mode.
Fig. 10: How to connect the EVB71122 with the USB-SPI convertor
For further information please refer to the Programming Software Manual for MLX71122 RF Receiver .
39012 71122 01
Rev. 005
Page 26 of 31
EVB Description
Nov/15