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NAT-MCH-CLK
NAT-MCH-CLK
Clock module for telecom and non-telecom applications
  • Support for AMC clocks CLK1, CLK2, and CLK3 for up to 12 AMCs, Update clock for 2nd NAT-MCH
  • Variable switching and distribution of clocks by on-board FPGA
  • Stratum 3 type PLL clock source for telecom applications
  • Reference for Stratum 3 PLL can be either CLK1 or CLK2 from any AMC, or sourced from the front panel reference clock I/O
  • PCI Express compliant clock signal can be distributed via CLK3 to all 12 AMCs

NAT-MCH-CLK

Clock module for telecom and non-telecom applications

  • Support for AMC clocks CLK1, CLK2, and CLK3 for up to 12 AMCs, Update clock for 2nd NAT-MCH
  • Variable switching and distribution of clocks by on-board FPGA
  • Stratum 3 type PLL clock source for telecom applications
  • Reference for Stratum 3 PLL can be either CLK1 or CLK2 from any AMC, or sourced from the front panel reference clock I/O
  • PCI Express compliant clock signal can be distributed via CLK3 to all 12 AMCs

Description

The NAT-MCH-CLK mezzanine is a clock distribution module available in several variants. It features an onboard FPGA with PLL and/or a PCIe reference clock. Two SMA connectors at the front panel can be either reference clock input or output. So they can provide the internal clock to external devices or vice versa.

Choose your variant depending on the field of application and according to the installed HUB-Module:

CLK123 Option (M-LVDS)

The CLK123 option distributes CLK1, CLK2, and CLK3 to all AMCs in an MTCA system. The combination of an onboard FPGA and a Stratum-3 PLL allows for flexible clock manipulation and distribution as defined in MTCA.0.

The PLL functions as clock source for telecom applications. Clock reference can either be CLK1/CLK2 from any of the 12 AMCs, or the front panel input. Moreover, the clock module supports an Update Clock to a second NAT-MCH in the system.

CLK00F Option (HCSL)

This option offers a 100MHz PCIe reference clock via CLK3; CLK1 and CLK2 are not supported.

In conjunction with a PCIe HUB-Module, the NAT-MCH-CLK provides a PCIe compliant fabric clock (FCLKA) to all AMC slots. This can be either a 100MHz fixed or 100MHz Spread Spectrum clock (SSC) at HCSL signaling level.

This variant does not support an Update Clock for another NAT-MCH.

CLK12F Option (M-LVDS / HCSL)

The CLK12F variant is a combination of both other options. For telecom applications, the NAT-MCH-CLK mezzanine distributes CLK1 and CLK2, whereas CLK3 is dedicated to the PCIe reference clock. A NAT-MCH update clock is available.

Key Features

  • Support for AMC clocks CLK1, CLK2, and CLK3 for up to 12 AMCs
  • Update clock for a second NAT-MCH in a redundant system
  • Two reference Clock I/O on front panel
  • Stratum 3 type PLL clock source for telecom applications with various output frequencies
  • Telecom CLK signals can be distributed over all Backplane clock connections and the front panel interface
  • Variable switching and distribution of clocks by on-board FPGA
  • CLK1, CLK2, and CLK3 from all 12 AMCs, the update clocks from a second NAT-MCH, or a signal from the front panel interface can be used as reference for the Stratum 3 PLL
  • A PCIe compliant clock signal can be distributed via CLK3 to all 12 AMCs
  • Support of M-LVDS or HCSL compliant driver and termination for CLK3 (assembly option)

Related Products

Order Codes

NAT-MCH-[Option]

-CLK123  

Telecom Clock Module (Stratum 3) supporting CLKs 1,2 and 3.
CLK2 of one of the 12 AMC modules or the front panel clock input can be selected as reference clock input for CLK1/3

-CLK12F  

Telecom Clock Module (Stratum 3) combining Telecom CLKs 1 and 2 with a PCIe spread spectrum or 100MHz fixed mean clock at CLK3 (HCSL) to all AMCs.
CLK2 of one of the 12 AMC modules or the front panel clock input can be selected as reference clock input for CLK1.

-CLK00F  

PCIe Spread Spectrum Clock Module supporting a PCIe spread spectrum or 100MHz fixed mean clock at CLK3 (HCSL) to all AMCs.

Solutions / Applications

Any MTCA.0 application with high demands on clocking options