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.

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Hardware

Mini-WR

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Block Diagram

Block diagram of Mini-WR*

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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.

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Project information

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

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Releases

• Firmware
• Hardware

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Users List

• JUNO (Jiangmen Underground Neutrino Observatory)
• KSW Tech

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Contacts

Commercial producers

• SyncTechnology - a spinoff company from THU

General question about project

• Guanghua Gong - Tsinghua University, Beijing

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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

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19 March 2018