Kontron pITX-E38 - Manual (Page 32)

KTD-N0904-D Page 30 IO-Area Connectors
pITX-E38 Users Guide
“Always On” (Always On) 7.11
The “Always On” can be used to implement hardware controlled Always ON by jumper. When “Always On” is
selected, then the board will power up automatically when power is connected. It doesn’t matter if “Always
On” is not selected in BIOS.
The board can still be shut down by PWRBTN_IN# (power button in) activation (via Front Panel connector).
SPI Connector (SPI) 7.12
The SPI (Serial Peripheral Interface) Bus connector provides synchronous full duplex in a 9 pin header.
Always On
Description
pin1-2 pin2-3
X - Always On selection
- X Default position
- - No function. Note: may load default BIOS settings after several minutes
Header Pin Signal Description Type
1 GND Ground PWR
2 SPI_MISO SPI master input, Slave Output IO-3.3
3 SPI_MOSI SPI master output, Slave Input IO-3.3
4 SPI_CS# SPI slave select, active low O-3.3
5 SPI_CLK SPI clock O-3.3
6 NC Not connected NC
7 3.3V 3.3V Power PWR
8 ADDIN Disable onboard SPI flash I-3.3
9 ISOLATE# Disable the SPI interface I-3.3
Signal Description
SPI_CLK Serial Clock
3.3V
3.3V Standby Voltage power line. Normally output power, but when Motherboard is
turned off then the on-board SPI Flash can be 3.3V power sourced via this pin.
SPI_CS# CS# Chip Select, active low.
ADDIN ADDIN input signal must be NC.
SPI_MOSI Master Output, Slave Input.
ISOLATE#
The ISOLATE# input, active low, is normally NC, but must be connected to GND when
programming the SPI flash. Power Supply to the Motherboard must be turned off when
loading SPI flash. The pull up resistor is connected via diode to 5VSB.
SPI_MISO Master Input, Slave Output
SPI_IO2_#WP
SPI Data I/O: A bidirectional signal used to support Dual IO Fast Read, Quad IO Fast Read
and Quad Output Fast Read modes. The signal is not used in Dual Output Fast Read mode.
SPI_IO3_#HOLD SPI Data I/O: A bidirectional signal used to support Dual IO Fast Read, Quad IO Fast Read
and Quad Output Fast Read modes. The signal is not used in Dual Output Fast Read mode.