Spectra PowerTwin P08C-AL-SR, User Manual

Page: 78 / 90

Spectra GmbH & Co. KG
sales@spectra.de
User Manual
Spectra PowerTwin PE3950/PN4200 Apollo + sunreadable Displays
78
5.1 Digital I/O (DIO) application
This section describes DIO application of the product. The content and
application development are better understood and implemented by well
experienced professionals or developers.
5.1.1 Digital I/O Programming Guide
5.1.1.1 Pins for Digital I/O for PowerTwin Pxx-E3950/Pxx-N4200 series product
Item Standard
GPIO74 (Pin107)
DI
GPIO75 (Pin108)
GPIO76 (Pin109)
GPIO77 (Pin110)
GPIO80 (Pin111)
DO
GPIO81 (Pin112)
GPIO82 (Pin113)
GPIO83 (Pin114)
5.1.1.2 Programming Guide
To program the Super I/O chip F81866A configuration registers, the following
configuration procedures must be followed in sequence:
(1) Enter the Extended Function Mode
(2) Configure the configuration registers
(3) Exit the Extended Function Mode
The configuration register is used to control the behavior of the corresponding
devices. To configure the register, use the index port to select the index and then
write data port to alter the parameters. The default index port and data port are 0x4E
and 0x4F, respectively.
To enable configuration, the entry key 0x87 must be
written to the index port. To disable configuration, write exit entry key 0xAA to
the index port.
Following is an example to enable configuration and to disable
configuration by using debug.
-o 4e 87
-o 4e 87 (enable configuration)
-o 4e aa (disable configuration)