Specifications

Chapter 3 Hardware
50 Reference Manual ReadyBoard 800
User GPIO Signals (J8)
The ReadyBoard 800 provides eight GPIO pins for custom use and the signals are routed to the J8
connector. Ampro has provided sample applications showing how to use the GPIO pins in the
Miscellaneous Source Code Examples subdirectory, under the ReadyBoard 800 Software menu on the
ReadyBoard 800 Doc & SW CD-ROM, (CD-ROM\Software\Misc\GPIO).
For more information about the GPIO pin operation, refer to the datasheet specifications or
Programming Manual for the Super I/O (W83627HF) controller at:
http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83627HF_F_HG_Ga.pdf
Table 3-20 list the GPIO pin/signals on a 10-pin, 2 rows, odd/even (1, 2) with 2 mm pin spacing.
Table 3-20. User GPIO Signals Pin/Signal Descriptions (J8)
Pin # Signal Description
1 GND Ground
2 VCC +5 Volts DC +/ 5%
3 GPIO4 User defined
4 GPIO5 User defined
5 GPIO6 User defined
6 GPIO7 User defined
7 GPIO0 User defined
8 GPIO1 User defined
9 GPIO2 User defined
10 GPIO3 User defined
Note: The shaded area denotes power or ground.
Infrared (IrDA) Port (J9)
The Infrared Data Association (IrDA) signals pass through a two-way communications header for an
external IrDA device using infrared as the transmission medium. There are two basic infrared
implementations provided; the Hewlett-Packard Serial Infrared (HPSIR) and the Amplitude Shift Keyed
Infrared (ASKIR) methods. HPSIR is a serial implementation of infrared developed by Hewlett-
Packard. The IrDA (HPSIR and ASKIR) signals share the same header as the IrDA model select
signals. These signals are operating system (OS) and/or application dependent and are based on the
user's application, but can be configured and enabled in BIOS Setup Utility. .
The HPSIR method allows serial communication at baud rates up to 115k baud. Each word is sent
serially beginning with a zero value start bit. A zero is sent when a single infrared pulse is sent at the
beginning of the serial bit time. A one is sent when no infrared pulse is sent during the bit time.
The Amplitude Shift Keyed infrared (ASKIR) allows serial communication at baud rates up to 19.2 k
baud. Each word is sent serially beginning with a zero value start bit. A zero is sent when a 500 kHz
waveform is sent for the duration of the serial bit time. A one is sent when no transmission is sent
during the serial bit time.
Both of these methods require an understanding of the timing diagrams provided in the Super I/O
controller (W83627HF) specifications available from the manufacture’s web site and referenced earlier
in this manual. For more information, refer to the Winbond W83627HF specifications and the Infrared
Data Association web site at http://www.irda.org.
NOTE For faster speeds and infrared applications not covered in this brief
description, refer to the W83627HF chip specifications by Winbond
Electronics Corp.