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6.1.3
I2C and Watchdog
The conga-PA3 offers I2C and watchdog signals via the feature connector X33. The pinout is described below:
Table 30 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: 1.25 mm Pitch, 8 x1 pin PicoBlade header
Possible Mating Connector: Molex 51021-0800
Note
The signals are 3.3 V compatible.
The fuse limits the power budget of connector X15 and X33 by 350 mA 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 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.
Feature Connector X33
