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Note
The GBE0_LINK# output is only active during a 100Mbit or 1Gbit connection. It is not active during a 10Mbit connection. This is a limitation
of Ethernet controller since it only has 3 LED outputs, ACT#, LINK100# and LINK1000#. The GBE0_LINK# signal is a logic AND of the
GBE0_LINK100# and GBE0_LINK1000# signals on the conga-TS87 module.
The Intel i218 device driver offers a new feature called ULP (Ultra Low Power) mode. In this mode, the Intel i218 driver sets the LED outputs
of the controller to tri-state mode. As a result, the ethernet link and activity LEDs may lit when no ethernet cable is connected. This issue is
common with older driver versions because the ULP feature is enabled by default and cannot be disabled. In newer driver version, this feature
can be disabled.
To have the correct LED status, congatec recommends that you use the latest i218 device driver provided on the website and additionally
disable the ULP mode.
6.1.5
LPC Bus
conga-TS87 offers the LPC (Low Pin Count) bus through the Intel
®
QM87 PCH. There are many devices available for this Intel
®
defined bus. The
LPC bus corresponds approximately to a serialized ISA bus yet with a significantly reduced number of signals. Due to the software compatibility
to the ISA bus, I/O extensions such as additional serial ports can be easily implemented on an application specific baseboard using this bus.
See section
10.2.1
for more information about the LPC Bus.
6.1.6
I²C Bus Fast Mode
The I²C bus is implemented through the congatec board controller (STMicroelectronics STM32) and accessed through the congatec CGOS
driver and API. The controller provides a Fast Mode multi-master I²C Bus that has maximum I²C bandwidth.
6.1.7
PCI Express™
The conga-TS87 offers 8 PCI Express™ lanes via the Intel
®
QM87 PCH. Seven of these lanes are offered externally on the AB and CD connectors.
The remaining lane is used by the onboard Gigabit Ethernet interface. The lanes are Gen 2 compliant and offer support for full 5 Gb/s
bandwidth in each direction per x1 link.
The conga-TS87 offers 6 lanes on the AB connector and 1 lane on the CD connector. Default configuration for the lanes on the AB connector is
6x1 link. A 1x4 and 2x1 link configuration is also possible but requires a special/customized BIOS firmware. Contact congatec technical support
for more information about this subject.
The PCI Express interface is based on the PCI Express Specification 2.0 with Gen 1 (2.5Gb/s) and Gen 2 (5 Gb/s) speed.
