Functional Overview

The PXIe-8881 is a modular PC in a PXI Express 3U-size form factor. The following figure is a functional block diagram of the PXIe-8881. Following the diagram is a description of each logic block shown.

The PXIe-8881 consists of the following logic blocks on three circuit card assemblies (CCAs):

• The processor is an Intel^® Xeon^® W available with different core count and base frequency.
• The SO-DIMM block consists of four SO-DIMM sockets that can hold up to 64 GB of DDR4-2666 MHz PC4-21300 ECC memory.
• The processor provides the PCI Express interface to the PXI Express backplane.
• The Platform Controller Hub (PCH) provides the USB, PCI Express x1, and LPC interfaces that connect to the peripherals on the PXIe-8881.
• The DisplayPort 1.2 block consists of a 1.2 compatible DisplayPort connector.
• The USB block consists of four Hi-Speed USB 2.0 connectors and two SuperSpeed USB 3.2 Gen 1 connectors.
• The Ethernet Port 0 block consists of an Intel® I219 Gigabit Ethernet Connection.
• The Ethernet Port 1 block consists of an Intel® I210 Gigabit Ethernet Controller.
• The UART block connects to one serial port.
• The SMB Front Panel Trigger provides a routable connection of the PXI triggers to/from the SMB on the front panel.
• The Watchdog block consists of a watchdog timer that can reset the controller or generate triggers.
• The PXI Express Connectors connect the PXIe-8881 to the PXI Express/CompactPCI Express backplane.
• The GPIB block contains the GPIB interface.
• The Thunderbolt 3 block contains the Thunderbolt 3 interface and connects to two USB-C connectors.