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Last edited by Erik van der Bij Feb 04, 2020
Page history

Mini-WR

Introduction

By push the fibre-optic SFP connector to its carrier board, Mini-WR makes itself the SMALLEST White Rabbit Node implementation and gives flexibility for connector/panel arrangement on the carrier board.

As a plug&play module, Mini-WR requires no or little WR knowledge to operate and ease the integration of White Rabbit functionality on custom system.


Hardware

Mini-WR


Block Diagram

Block diagram of Mini-WR*


Features:

  • Spartan 6 (XC6SLX45T-4CSG324C)
  • 32MBit SPI FLASH (W25Q32JVZPIQ)
  • 64Kbit I2C EEPROM (24AA64T-I/MC)
  • 1-Wire temperature sensor (DS18B20)
  • WR tunable clock generate circuit
    • main PLL (DAC + TCVCXO + PLL)
    • DMTD offset clock (DAC + VCXO) Simplified DMTD circuit to reduce external components **
  • SMALL dimension :53.5mm * 25mm (Mini-WR-G) / 46mm * 25mm (Mini-WR)
  • metal shield cover on top (not shown on picture)
  • 3.3v power supply, 1.3A
  • flexible connect-options
    • FCI high-speed connector : 0.5mm pitch, 60 pos. on bottom side. Amphenol FCI Mezzostak connector.
    • Gold-finger edge connector : 1mm pitch, 40 pos. right edge, Mate with SAMTEC MEC1 connector
    • Castellated edge contacts : 2mm pitch, 22 Pos. on top/left/bottom edge respectively.

Project information

  • connect-options
  • Mini-WR-CB
  • Production documentation
  • Frequently Asked Questions

Releases

  • Firmware
  • Hardware

Users List

  • JUNO (Jiangmen Underground Neutrino Observatory)
  • KSW Tech

Contacts

Commercial producers

  • SyncTechnology - a spinoff company from THU

General question about project

  • Guanghua Gong - Tsinghua University, Beijing

Current status

Date Event
21-Nov-2017 First discussion
21-Dec-2017 Evaluation prototype layout done
16-Feb-2018 Evaluation prototype assembled
12-Mar-2018 Evaluation prototype tested
19-Mar-2018 Project started on ohwr

19 March 2018

Clone repository
  • Documents
  • Home
  • Mini wr cb
  • Connect options
  • Documents
    • Mini wr user manual (chinese)
    • Schematics of mini wr and mini wr g
    • Images
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