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6.1.9
I²C Bus
The I²C bus is implemented through the congatec board controller (Texas Instruments Tiva™ TM4E1231H6ZRB) and accessed through the
congatec CGOS driver and API. The controller provides a fast-mode multi-master I²C bus that has the maximum I²C bandwidth.
6.1.10
ExpressCard™
The conga-TS175 supports the implementation of ExpressCards, which requires the dedication of one USB 2.0 port or a x1 PCI Express link for
each ExpressCard used.
6.1.11
General Purpose Serial Interface
The conga-TS175 offers two UART interfaces via the congatec Board Controller. These interfaces support up to 1 Mb/s and can operate in low-
speed, full-speed and high-speed modes. The UART interfaces are routed to the A–B connector. They do not support hardware handshake
and flow control.
The UART interfaces require congatec device driver to function.
6.1.12
GPIOs
The conga-TS175 offers General Purpose Input/Output signals on the A–B connector. The GPIO signals are controlled by the congatec Board
controller.
6.1.13
Power Control
PWR_OK
Power OK from main power supply or carrier board voltage regulator circuitry. A high value indicates that the power is good and the module
can start its onboard power sequencing.
Carrier board hardware must drive this signal low until all power rails and clocks are stable. Releasing PWR_OK too early or not driving it low
at all can cause numerous boot up problems. It is a good design practice to delay the PWR_OK signal a little (typically 100ms) after all carrier
board power rails are up, to ensure a stable system.
A sample screenshot is shown below:
