NAT-MCH-SCIx84

The NAT-MCH-SCIx84 is a pre-configured MCH package aiming for the special demands of physics applications with high-speed Ethernet connections as well as broad FatPipe bandwidth and RTM support.

The package comprises of

• NAT-MCH-S4 Carrier Hub (the double-width variant of the NAT-MCH-G4)
• NAT-MCH-G4-CLKP clock mezzanine and
• NAT-MCH-G4-HUB-Px84 Hub module

The MCH base board features 1G / 2.5G / 10G FabricA connections to each AMC, as well as a two 1GbE available at two RJ45 interfaces at the front panel. As an assembly option the RJ45 interfaces could be replaced by SFP fibre uplinks.

Two low-jitter clock multiplexers route CLK1 and CLK2 (MLVDS signalling standard). CLK3 is executed as PCIe Reference Clock (100MHz Spread Spectrum Clock, HCSL). A precision timing option consisting of a GPS input and an onboard OCXO is available as seperately orderable assembly option.

By the 84 lanes of its PCIe switch, the NAT-MCH-SCIx84 offers PCIe Gen5 x4 to all 12 AMCs. If supported by the backplane, it even features x8 links for up to six AMCs in the system. Moreover, a PCIe Gen5 x16 (or two x8) uplink(s) is available via two QSFP-DD interfaces at the front (depending on transceiver type).

The NAT-MCH-SCIx84 provides a PCIe Gen5 x16 link to an optional RTM and offers mounting space for NVME/SSD memory devices.

NAT-MCH-S4 Base Board Features

• Double-width, full-size MCH
• IPMI
• Console via USB and web interface
• 16 LEDs reflecting AMC / CU / PM status
• Firmware update via HPM
• Graphical system and FRU status
• Front Uplink (assembly options):
  • 1-10G Base Ethernet via RJ45 or
  • 1-25G optical Base Ethernet via SFP-28-DD
• Backplane: up to 12x 1GbE / 2.5GbE / 10GbE
• RTM support and mounting space for NVME /SSD memory devices

NAT-MCH-G4-CLKP Features

• CLK1 / CLK2 (MLVDS): 2x low-jitter cross-point mux
• CLK3: PCIe Ref CLK (HCSL)
• PLL synthesizer
• CLK IN / OUT via SMA
• Optional precision timing support

NAT-MCH-G4-HUB-Px84 Features

• Microchip PFX PCIe x84 Gen5 Switch
• Front panel uplink via 2x QSFP-DD (PCIe Gen5 x8 – depending on transceiver)
• 12x PCIe Gen5 x4 / 6x PCIe Gen5 x8 (depending on backplane)
• PCIe Gen5 x16 to RTM via NAT-MCH-S4