EKF - Short Profile
EKF - Short Profile


CompactPCI® Serial • XMC Module Carrier Card PCIe® x 8

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Ordered List
Product Information
Block Diagram
General Information
CPCI Serial Concept

XMC Mezzanine Modules

DB4 | DC2 | DN1 | DN3 | DS1 | DU1 | DU2 | DV1 | DX2 | DX4 | DX5

Alternate XMC Module Carrier

SK2 | SK4 | CK2

SK3-MEDLEY • CPCI Serial XMC Module Carrier
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Photo Gallery
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XMC Mezzanine Modules
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XMC vs. XMC 2.0 Connector Styles
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CompactPCI® Serial • XMC Module Carrier
PCI Express® 1 to 8 Lane Support

The SK3-MEDLEY is a peripheral slot board for PICMG® CompactPCI® Serial systems and acts as carrier card for an XMC-style mezzanine module. XMC modules are specified by ANSI/VITA 42/61, as an advanced replacement for PMC modules. While using a similar form factor as PMC cards, XMC modules are provided with a PCI Express® interface.

The SK3-MEDLEY is equipped with a bidirectional 8-lane PCI Express® Gen3 redriver, for optimum 8GT/s high speed signal integrity, and should be installed into a fat pipe peripheral slot of a CompactPCI® Serial backplane. The SK3-MEDLEY can be used with 74x139mm2 shortened length XMC mezzanine cards only (for 149mm length consider the SK2-SESSION).



The SK3-MEDLEY requires at least a single PCI Express® lane from the backplane, passed over across the connector P1 to a PCIe redriver circuit. Up to eight PCI Express® lanes are supported, when the SK3-MEDLEY is installed into a CompactPCI® Serial fat pipe peripheral slot (P1/P2 backplane connectors in use). With a total link bandwidth of 64Gbps, even very demanding applications can be realized, such as a 10/40GBps Ethernet or USB 3.1 XMC mezzanine module e.g.

The on-board 8-lane bidirectional redriver is suitable up to 8.0Gbps (PCIe 3.0) data transfer rate per lane, and ensures optimum signal integrity (wider opening with respect to the eye diagrams). The XMC module connector J15 is directly tied to the redriver circuit. In addition, a zero delay PCIe Gen3 clock buffer is provided on-board. Due to space restrictions on the SK3-MEDLEY imposed by the backplane connector P2, only 139mm length XMC mezzanine modules can be populated.

Feature Summary

  • PICMG® CompactPCI® Serial standard (CPCI-S.0) peripheral slot card
  • Single size Eurocard 3U 4HP 100x160mm2
  • CPCI-S backplane connectors P1 & P2 (fat pipe slot up to PCIe® x 8)

XMC Mezzanine I/F
  • Suitable for 74x139mm2 XMC modules (shortened length according to VITA 42 figure 3-4)
  • XMC Module Connector J15 (originally defined by VITA 42 as PCIe Gen1 interface)
  • Option XMC 2.0 Module Connector J15 (VITA 61) recommended for PCIe Gen2/Gen3
  • 8 x PCI Express® lanes Gen1 (2.5GT/s), Gen2 (5.0GT/s) or Gen3 (8GT/s)
  • 8-Lane bidirectional PCIe Gen3 redriver/repeater for optimum signal integrity
  • PCI Express® Gen3 clock buffer for optimum signal integrity
  • +12V XMC VPWR
  • -12V regulator option (J15 Pin F8)

Regulatory, Environment
  • Designed & manufactured in Germany
  • ISO 9001 certified quality management system
  • Long term availability
  • Coating, sealing, underfilling on request
  • RoHS compliant 2011/65/EC
  • Operating temperature -40°C to +85°C (industrial temperature range)
  • Storage temperature -40°C to +85°C, max. gradient 5°C/min
  • Humidity 5% ... 95% RH non condensing
  • Altitude -300m ... +3000m
  • Shock 15g 0.33ms, 6g 6ms
  • Vibration 1g 5-2000Hz
  • MTBF 111.1 years
  • EC Regulatory EN55022, EN55024, EN60950-1 (UL60950-1/IEC60950-1)

SK3-MEDLEY - Simplified Block Diagram

SK3-MEDLEY - Simplified Block Diagram

SK3-MEDLEY w. XMC Module (Exploded View)

SK3-MEDLEY w. XMC Module (Exploded View)

Ordering Information
Please refer to List 21 for popular SKU
EKF is an ISO-9001 certified company
EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Phone +49 (0)2381/6890-0 • Fax +49 (0)2381/6890-90 • E-Mail