Introduction; Specification; Suggested System - Philips PC-Link Manual

1.

INTRODUCTION

PC-LINK USB SMART I/O is a USB device that functions as controller of multiple
input/output lines and interfaces. Examples of PC-LINK USB SMART I/O
applications are as a relay/LED controller, reading analog signals from sensor,
as a switch condition reader, calculate pulse counter, communications with
modules via UART Interface, communications with sensors/RTC/EEPROM via
I 2 C ® interface, etc.
1.1.

SPECIFICATION

PC-LINK USB SMART I/O specification are as follows:
• Connection to host (computer) uses USB interface which will be recognized
as COM Port (virtual) with 8-n-1 parameters (8 bit data, 1 stop bit, without
parity) and Auto Baud Rate feature (baud rate range: 110-256000 bps).
• There are 8 analog pins that can be utilized as analog inputs (Analog to
Digital Converter), digital outputs, or digital inputs (with or without internal
pull up resistors).
• There are 8 digital pins that can be utilized as digital outputs or digital
inputs (with or without internal pull up resistors).
• There are 5 general purpose pins that can be utilized as digital outputs or
digital inputs (with or without internal pull up resistors).
• Equipped with an 8-bit DAC (Digital to Analog Converter) with rail-to-rail
capabilities (0 – ±5.1 VDC).
• Equipped with I
50 kHz). Module acts as master.
• I
2
C send buffer is 35 bytes and receive buffer is 32 bytes.
• Equipped with 8-n-1 UART interface with voltage level selection: TTL (half-
duplex), RS232 (half-duplex), or RS485 (half-duplex), and baud rate
selection: 9600, 19200, 38400, or 57600 bps.
• UART send and receive buffers are 32 bytes each.
• Requires a 6,5 – 12 VDC power supply.
• Voltage regulator with ±5,1 VDC output and a maximum current of 800mA
(some are allocated for internal components).
1.2.

SUGGESTED SYSTEM

Suggested system for PC-LINK USB SMART I/O:
Hardware:
• PC
™ ™
AT
• DVD-ROM Drive and Hard disk.
Software:
• Windows
®
• Borland Delphi
• Files in the CD/DVD:
smart_io_driver.inf, SmartIO.exe + source (Delphi 7), datasheet, and PC-
LINK USB SMART IO MANUAL.
2 C interface with bit rate between 30 - 400 kHz (default is
® ™
Pentium IBM Compatible with USB port.
XP Operating System.
©
or other programming that can access the COM port.
3