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Welcome to the SPEC_A7 wiki!
The SPEC-A7 is versatile low cost White Rabbit node. It can operate in following scenarios:
- stand alone unit enclosed in aluminium box with basic functionality (just PPS, 10MHz and trigger outputs) - low cost version
- stand alone unit enclosed in aluminium box with extended functionality (additional 10MHz-6GHz RF output, Grand Master functionality)
- stand alone unit enclosed in aluminium box with management interface (via RJ45 and SFP; embedded Linux)
- as a network card with PTM support; SPEC-A7 works as standard Linux Network Interface Controller (NIC)
- as a mezzanine for Sinara reference clock card (Wenzel_ref)
Module features:
- dual SFP - WR node, WR Grand Master, WR switch mode
- PPS, 10MHz/TRIG outputs in default configuration
- PPS, 10MHz inputs in extended configuration
- programmable 10MHz-6GHz RF output
- PPS and TRIG outputs with low jitter option - FPGA output is re-synced to main VCXO and external delay line is used for fine tuning
- Time of a Day (TOD) IN/OUT available using mmcx to SMA pigtails
- Linux NIC with Precision Time Measurement (PTM) support over PCI Express
- firmware compatible with CUTE-A7 (full pin-to-pin compatibility) - no NIC support
- dedicated firmware written using Litex with NIC and PTM functionality
- power supply - via PCI Express connector and DC Jack barrel connector - 6..12V DC
- passive cooling
- 64Mbit PSRAM
- USB-C interface providing access to JTAG, serial console, I2C
Management mezzanine features:
- Linux SOM (imx93) running services line VPN, routing between WR and external RJ45/SFP interfaces, SNMP
- Management interfaces via RJ45 (10/100/1000) and SFP(100/1000)
- remote board management and monitoring
NIC version
Stand-alone version with management module
Rack-mount quad SPEC-A7
