S&T Kontron COMe-bTL6, User Manual, Page: 14 / 101

COMe-bTL6 - User Guide. Rev. 1.5
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1.3. COM Express® Documentation
The COM Express® specification defines the COM Express® module form factor, pinout and signals. For more COM
Express® specification information, visit the PCI Industrial Computer Manufacturers Group (PICMG®) website.
1.4. COM Express® Functionality
All Kontron COM Express® basic modules contain two 220-pin connectors, each of which has two rows called row
A & B on the primary connector and row C & D on the secondary connector. The COM Express® basic type 6 Computer-
On-Module (COM) features the following maximum amount of interfaces according to the PICMG module pinout type.
Table 1: Type 6 and COM-bTL6 Functionality
Feature Type 6 COM-bTL6
HD Audio 1x 1x
Gbit Ethernet 1x 1x up to 2.5 GbE
Serial ATA Gen3 4x 4x
PCI Express x 1 4x 8x PCIe 3.0
PCI Express x16 (PEG)
1x 1x x16 PCIe 4.0 on PEG Lanes [0-3]
USB Client - -
USB 4x USB 3.0/2.0
8x USB 2.0 4x USB 3.1 Gen 2
8x USB 2.0
VGA 1x 1x (option)
LVDS (eDP) 1x LVDS dual channel LVDS dual channel 18/24 bit (default) or
Up to 2x eDP (option)
DP++ 3x 3x
SPI 1x 1x SPI/GSPI
LPC
1x 1x (pin shared with eSPI)
External SMB
1x 1x
External I2C 1x 1x
SDIO shared with GPIO 1x option -
GPIO or SDIO 8x 8x GPIO (4x GPI/4x GPO)
UART (2-wire COM) 2x 2x UARTS (default: Chipset / option: Embedded Controller)
FAN PWM out 1x 1x
1.5. COM Express® Benefits
COM Express® defines a Computer-On-Module (COM), with all the components necessary for a bootable host
computer, packaged as a highly integrated computer. All Kontron COM Express® modules are very compact and
feature a standardized form factor and a standardized connector layout that carry a specified set of signals. Each
COM module is based on the COM Express® specification. This standardization allows designers to create a single-
system carrier board that can accept present and future COM Express® modules.
The carrier board designer can optimize exactly how each of these functions implements physically. Designers can
place connectors precisely where needed for the application, on a carrier board optimally designed to fit a system’s
packaging.
A single carrier board design can use a range of COM Express® modules with different sizes and pinouts. This
flexibility differentiates products at various price and performance points and provides a built-in upgrade path when
designing future-proof systems. The modularity of a COM Express® solution also ensures against obsolescence when
computer technology evolves. A properly designed COM Express® carrier board can work with several successive
generations of COM Express® modules.
A COM Express® carrier board design has many advantages of a customized computer-board design and, additionally,
delivers better obsolescence protection, heavily reduced engineering effort, and faster time to market.