WARPLab Reference Design Hardware Config: WARP v3

Radio Interface

• In the 2 RF Node configuration (ie only RF A and RF B are populated), you should only use the 2RF bitstream in the download.
• In the 4 RF Node configuration (ie all RF interfaces are populated), you should only use the 4RF bitstream in the download.

Dip Switches

• In WARPLab 7.1 and later, the dip switch value of 0xF (ie all switches set to '1'), is reserved for dynamic node configuration.

Debug Header

Updated for WARPLab 7.5

The debug header is configured by default to map to the following pins:

These pins are not 3.3v compatible! You must use external level shifting to interface with non-2.5v signals.

NOTE: The Debug Header is defined in the system.ucf and the connections are defined in the system.mhs

• The Trigger output and Trigger input pins above are used with the Trigger Manager
• The CM-PLL Clock Module shares FPGA I/O between boards as well as a clock reference. This allows easy node synchronization with a single cable. In WARPLab 7.5, the 4 trigger outputs are duplicated and sent to both the CM-PLL board as well as the debug header. The 4 trigger inputs are digitally ORed from pins connecting both the CM-PLL board as well as the debug header.

Clock Configuration

Updated for WARPLab 7.5

The WARPLab reference design does not require any external clock connections. By default the reference design will use the oscillators on the WARP v3 board for all system and RF clocking. The reference design does support both sourcing and sinking external clocks for synchronization of multiple nodes. There are two hardware options for this synchronization: the CM-MMCX Clock Module and the CM-PLL Clock Module

CM-MMCX Clock Module:

The CM-MMCX is capable of sourcing and/or sinking RF and sampling clocks. This clock module can be used in a daisy chain configuration, where a single primary node shares its internal clocks with a chain of secondary nodes that adopt and forward the clocks. The role of each node is configured via the 2-position SIP switch on the CM-MMCX, according to the figure below.

• Detailed information on the WARP v3 Clocking configuration can be found here.
• To adjust the functionality, please use the following SIP switch settings:

CM-PLL Clock Module:

The CM-MMCX is capable of sourcing and/or sinking a clock referenced used to discipline a PLL on each node. This clock module can be used in a daisy chain configuration, where a single primary node shares its clock reference with a chain of secondary nodes that adopt and forward the clock reference. The role of each node is configured via the 6-position SIP switch on the CM-PLL, according to the figure below.

• Detailed information on the WARP v3 Clocking configuration can be found here.
• To adjust the functionality, please use the following SIP switch settings:

Ethernet

• By default, only Ethernet connection A (Eth A) is used.