High Level Specification; Pcie Gen4 Link Ntb Product Variants; Pcie Gen3 Link Ntb Product Variants; Detailed Specifications - Dolphin MXH94 Series User Manual

High Level Specification

The MXH94x and MXH95x are a family of low profile, half-length PCIe adapters utilizing the Samtec FireFly™ optical transceivers. It
is available in several variants to support various use cases and configurations. All boards are using a Gen4 PCIe switch from
Microchip. The MXH94x boards are equipped with Samtec FireFly™ PCIe Gen4 optical transceivers. The MXH95x boards are
equipped with the Samtec FireFly™ PCIe Gen3 optical transceivers.
Some of these variants come with NTB enabled firmware and are bundled with Dolphins eXpressWare. Please reference the tables
below for details. This manual covers all NTB enabled variants. Please reference the Dolphin
MXH94x / MXH95x Transparent Adapter Users Guide if you have one of the Transparent only variants.
The cards operate at the highest common speed shared between the slot and the card (Gen4) and the widest common link-width
(x16).

PCIe Gen4 Link NTB Product variants

The variants in the table below utilize Gen4 FireFly™ modules, support NTB configurations and come with a full eXpressWare
software license. Each Model has different FireFly™ optical engines mounted depending on your use case and requirements:
SKU / Model #FireFly™
MXH940 2 x8
MXH941 1 x8
MXH943 2 x4
MXH944 1 x4
MXH949 4 x4
NOTE: Please note that cards utilizing 24 fiber MPO cannot be connected to cards utilizing 12 fiber MPO.

PCIe Gen3 Link NTB Product variants

The variants in the table below utilize the Gen3 FireFly™ modules, support NTB configurations and come with a full eXpressWare
software license. Each Model has different FireFly™ optical engines mounted depending on your use case and requirements:
SKU / Model #FireFly™
MXH950 2 x8
MXH951 1 x8
MXH953 2 x4
MXH954 1 x4
MXH959 4 x4
NOTE: Please note that cards utilizing 24 fiber MPO cannot be connected to cards utilizing 12 fiber MPO.

Detailed specifications

•
PCI Express Base Specification, Rev. 4.0.
•
PCI Express CEM Specification, Rev. 4.0.
•
PCI Express Gen4 16.0 GT/s per lane signaling – 256 GT/s total signaling. Variants utilizing Gen3 FireFly™ modules
are limited to PCIe Gen3 8 GT/S signaling rate on the optical link.
•
PCI Express Gen4 x16 edge connector. The card installs in any PCI Express slot that has a physical x16 connector.
•
Compliant with PCI Express Gen1 through Gen4 computers and IO systems, auto detection.
•
Cable port configurations (depends on SKU number)
o
One x16 NTB port
o
Two x8 NTB ports
o
Four x4 NTB ports
o
One x8 NTB port
o
Two x4 NTB ports
o
One x4 NTB port
•
MPO cable connector
•
Microchip / Microsemi Switchtec™ PM40036B PFX PCI Express Gen4 chipset. (PM40052B used in Rev A and B cads)
MXH94x / MXH95x NTB Adapter User's Guide – Dolphin Interconnect Solutions
Config
NTB x16 / NTB 2 x8
NTB x8
NTB x8 / NTB 2 x4
NTB x4
NTB x16, NTB 2 x8, NTB 4x 4
Config
NTB x16 / NTB 2 x8
NTB x8
NTB x8 / NTB 2 x4
NTB x4
NTB x16, NTB 2 x8, NTB 4x 4
Required Fiber cable
2 units 24 fiber MPO
1 unit 24 fiber MPO
2 units 12 fiber MPO
1 unit 12 fiber MPO
4 units 12 fiber MPO
Required Fiber cable
2 units 24 fiber MPO
1 unit 24 fiber MPO
2 units 12 fiber MPO
1 unit 12 fiber MPO
4 units 12 fiber MPO
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