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©
2015
congatec
AG
PA3Cm01
36/44
Feature Connector X33 Pinout Description
Pin
Signal Name
1
BATLOW#
2
+3.3V
3
N.C. *
4
I2C_CLK
5
I2C_DAT
6
GN D
7
WDTRIG#
8
WDOUT
Connector Type
X33: 1.25mm Pitch, 8x1 Pos. PicoBlade Header.
Mating Connector: Possible mating connector for X15 is Molex 51021-0800
Note
Signals are 3.3V compatible. The fuse limits the power budget of connector X15 and X33 by 350mA hold current.
* On revision B.x and later, pin 3 is connected to LED_WLAN# (cathode).
6.2
congatec Board Controller (cBC)
The conga-PA3 is equipped with a Texas Instruments Tiva™ TM4E1231H6ZRBI microcontroller. This onboard microcontroller plays an important
role for most of the congatec BIOS features. The cBC fully isolates some of the embedded features such as system monitoring, I²C bus from
the x86 core architecture. This improves performance and reliability, even during low power mode.
6.2.1
Fan Control
The congatec Board Controller on the conga-PA3 controls the power supplied to the fan with the PWM signal. Additionally, there is an input
signal called FAN_TACHOIN that provides the ability to monitor the system’s fan RPMs (revolutions per minute). This signal must receive two
pulses per revolution in order to produce an accurate reading. For this reason, a two pulse per revolution fan is recommended.
Feature Connector X33
