Table 40: Signal Description - Kontron mITX-BW User Manual

Pin Signal
21 GPIO8
22 GPIO9
23 GPIO10
24 GPIO11
25 GPIO12
26 GPIO13
27 GPIO14
28 GPIO15
29 GPIO16
30
GPIO17
31 GND
32
GND
33 EGCLK
34 EGCS#
35 EGAD
36 TMA0
37 +12 V
38 GND
39 NC
40 NC
41 GND
42 GND
43 GND
44 S3#

Table 40: Signal description

Signal Description
SMBC SMBus Clock signal
SMBD SMBus Data signal
S3# S3 sleep mode, active low output, optionally used to deactivate external system.
S5# S5 sleep mode, active low output, optionally used to deactivate external system.
PWR_OK PoWeR OK, signal is high if no power failures are detected.
(This is not the same as the P_OK signal generated by ATX PSU).
EXT_BAT
(EXTernal BATtery) option for connecting + terminal of an external primary cell battery
(2.5 - 3.47 V) (– terminal connected to GND).
The external battery is protected against charging and can be used with / without the on-board
battery installed.
SB3V3
Max. load is 0.75 A (1.5 A < 1 sec.)
SB5 V StandBy +5 V supply.
GPIO0..17
General Purpose Inputs / Output. These Signals may be controlled or monitored through the use of
the KT-API-V2 (Application Programming Interface). See details in table below.
EGCLK Extend GPIO Clock signal
EGAD Extend GPIO Address Data signal
EGCS# Extend GPIO Chip Select signal, active low
TMA0 Timer Output
+12 V Max. load is 0.75 A (1.5 A < 1 sec.)
Type Ioh / Iol
I
I
I
I
I
IOT
IOT
IOT
IOT
IOT
PWR
PWR
O 8 / 8 mA
O 8 / 8 mA
8 / 8 mA
O
PWR
PWR
I
O
PWR
PWR
PWR
O 25 / 25 mA
www.kontron.com
Pull U / D Note
1 kΩ Pull-up to SB3V3
1 kΩ Pull-up to SB3V3
mITX-BW – User Guide, Rev. 1.6
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