Spectra
GmbH
&
Co.
KG
vertrieb@spectra.de
User
Manual
‐
Spectra
PowerTwin
P
Apollo
Lake
+
standard Displays
Version
1.0
September
2018
90
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
PE3950/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)
Summary of Contents for PowerTwin PS12-E3950C9
Page 12: ...Product Introductions Chapter 1...
Page 28: ...System Pin Definitions and Settings Chapter 2...
Page 38: ...System Setup Chapter 3...
Page 56: ...BIOS Setup Chapter 4...
Page 99: ...Product Introductions Chapter 1...
Page 129: ...System Pin Definitions and Settings Chapter 2...
Page 139: ...System Setup Chapter 3...
Page 157: ...BIOS Setup Chapter 4...
