SGS Thomson Microelectronics ST20-PPI-UK, ST20-PPI-220, ST20-PPI-110 Datasheet
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PRODUCT INFORMATION
PC PARALLEL PORT TO OS-LINK INTERFACE
ST20-PPI
42 1679 00January 1996
FEATURES
• Desktop mounted parallel port to differential
OS-Link interface
• Standard 25 way D-type parallel port connection
• Standard 26 way D-type differential OS-Link
connection
• Plug top power supply
• Supports nibble, byte and EPP mode parallel
port standards
DESCRIPTION
The ST20-PPI parallel port to OS-Link interface is
a host interface to allow connection from a PC parallel port to any OS-Link based ST20 development
board such as the ST20450-SAB. The interface
plugs into any standard PC 25 way D-type parallel
port. Supported parallel port modes are:
• Nibble mode
• Byte mode
• EPP mode
depending on which mode the host PC can support. Connection to the development target is via a
differential OS-Link connector, as used on the IMS
B300 and ST20450-Development Board. Once
connected, the development target can be accessed with the standard ST20 Toolset using the
MS Windows drivers supplied.
ST20-PPI PC Parallel Port to OS-Link Interface
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1 Introduction
The ST20-PPI parallel port to OS-Link interface is a host interface to allow connection
from a PC parallel port to any OS-Link based ST20 development board such as the
ST20450-SAB. The interface plugs into any standard PC 25 way D-type parallel port.
Supported parallel port modes are:
• Nibble mode
• Byte mode
• EPP mode
depending on which mode the host PC can support. Connection to the development
target is via a differential OS-Link connector, as used on the IMS B300 and ST20450Development Board. Once connected, the development target can be accessed with
the standard ST20 Toolset using the MS Windows drivers supplied.
2 Installation
2.1 Hardware Installation
The ST20-PPI has three connections: Parallel port; Differential OS-Link and Power
supply. To install the hardware, the following steps should be followed:
• Plug the 25-way D-type of the par allel port cable built into the interf ace, into the
parallel port of the PC
• Plug the target development system into the 26-way D-type using a differential
OS-Link cable or the differential-to-single ended cable depending on the link
interface available on the target board
NOTE: To comply with EMC regulations this cable must use shielded cable
with shielded headshells at either end.
• Plug power supply cable into PSU socket of the interface
• Plug the power supply into the mains socket.
• Switch on the PC
• Switch on the power supply. The power LED on the interface should illuminate
when the power supply is switched on
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