Copyright
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2014
congatec
AG
TS87m13
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6.2
Secondary Connector Rows C and D
The following subsystems can be found on the secondary connector rows C and D.
6.2.1
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 1 lane on the CD connector and 6 lanes on the AB connector. 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.
6.2.2
PCI Express Graphics (PEG)
PCI Express Graphics (PEG) is supported on conga-TS87 variants. The PEG lanes are same as PCI Express lanes 16-31 and are designed to be
compliant with the PCI Express Specification 3.0, with support for 8.0 Gb/s speed.
The x16 PEG interface is by default configured as a 1x16 link. It is however possible to optionally configure the x16 PEG interface to support
graphics and/or non-graphic PCI Express devices. This configuration increases the available PCI Express lanes on top of those explained
in section 6.1.7 and section 6.2.1. It also enables the use of the PEG lanes for supporting x1, x2, x4 or x8 PCI Express devices. The possible
configurations are 1x16 link (default), 2x8 links or 1x8 + 2x4 links as shown in the diagram below:
PEG
LANE
0
Single Link (1x16 Link)
Link 1
Link 1
Link 1
Link 2
Link 3
Link 2
Double Links (2x8 Links)
Triple Links (1x8 + 2x4 Links)
PEG
LANE
1
PEG
LANE
2
PEG
LANE
3
PEG
LANE
4
PEG
LANE
5
PEG
LANE
6
PEG
LANE
7
PEG
LANE
8
PEG
LANE
9
PEG
LANE
10
PEG
LANE
11
PEG
LANE
12
PEG
LANE
13
PEG
LANE
14
PEG
LANE
15
