White Rabbit Switch supplied by OPNT
From now on the 18-port White Rabbit switch can also be ordered from
OPNT. This project page describes the changes / additions OPNT has
made.
The changes fall into two categories: replace existing components due to
obsolescence and making changes to allow easy installation of a
low-jitter-daughterboard.
SCB3.4.1
The image below shows the component layout of the
SCB3.4.1
Compared to the SCB3.4 J3 is always fitted and J5 & J6 are added. J6 is a u.FL connector to which the clock output of the Low-jitter-daughterboard can be connected. J5 is used to select between the existing oscillator or the Low-jitter-daughterboard.
A less visible change is the replacement of obsolete components. The biggest change is using a different NAND flash. Also the ethernet connector is soldered to the board so it cannot come lose.
Backplane (carrier board_ 3.3.1
The backplane has been modified so the fans are always on. This is safer because in case of a software failure the fans will still work. Also more sturdy SFP cages have been used.
Binaries
Regular firmware with support for SCB3.4.1
Main Features
In bold the features that are different from WRS-3.4
- Front Panel
- 5 SMA connectors ****
- 1-PPS input
- 1-PPS output
- 62.5 MHz output
- 10 MHz output (software configurable)
- 10 MHz input
- 18 cages for Gigabit SFP transceivers with EMI Shield (connected to Xilinx GTXs)
- 10/100 RJ45 Ethernet management port (connected to ARM CPU)
- 10/100 SFP Ethernet management port (converted from the USB of the ARM CPU)
- USB port (connected to ARM CPU)
- 2x USB-uart debugging port (connected to ARM CPU and FPGA I/O pins) (was on back panel on WRS-3.4)
- Power and Status LEDs
- Link and Act LEDs for each SFP cage through light guide pipe
- Power reboot button
- 5 SMA connectors ****
- Back Panel
-
2x USB-uart debugging port (connected to ARM CPU and FPGA I/O pins)move to front panel - power button
-
2x cooling fanremoved in WRS_FL -
2x microswitchremoved in WRS_FL - 1x grounding connector
-
- Xilinx Virtex-6 FPGA (XC6VLX240T as default, XC6VLX365T can be
mounted upon request)
-
18Mb QDRII memory (CY7C1314KV18)not mounted in WRS_v3.4, removed in WRS_FL -
256Mb parallel configuration memory (PC28F256)not mounted in WRS_v3.4, removed in WRS_FL
-
- Clocking resources
- Integrated Low-jitter WRS daughterboard for improved clock outputs
- VM53S3-25.00 as default Internal Oscillator
- T604-025.0M, IVT32000C,DOT050V-020.0M, CVHD-950-100.000 can be mounted for evaluation.
- refer to SCB_clock_tree
- ARM Atmel AT91 SAM9G45 CPU
- Memory:
- 64MB DDR2
- 256MB NAND
- 8MB boot flash
- Others:
- 1x FPGA JTAG connector
- 1x ARM JTAG connector
- 1x SYS_ADMIN header (orignial P10 on WRS_3.4, with manual reset signals)
- 1x UART & PWR_Mon header (original P2 on WRS_3.4, with additional USB-UART and Power signals)
- 2x QSS/QSH high speed connectors between SCB and backplane
- 4x Ultra Small Surface Mount Male Coaxial Connectors for clock circuit test
-
1x QSS-016 high speed SMI link connectornot mounted in WRS_v3.4, removed in WRS_FL -
1x gold-finger uTCA edge connectorremoved in WRS_FL
- Power supply 100-240VAC, 2.0A, 50-60Hz input, 12V DC, 6.66A, 80W output
- Box dimensions 482.8 x 42.34 x 222 mm
- Certification (TBD)
- IPC-610 Rev E Class 2
- ISO-9001
- ISO-14001
- CE
- RoHS
- CCC (China Compulsory Certification)
WRSwitch fan-less hardware consists of three elements:
- SCB_FL PCB - contains main electronics components, ARM processor, Xilinx FPGA chip, oscillators, memories, etc. - This is a redesigned board, different from the one used in the original WRS-3.4.
- backplane PCB - electrical connections to 18 SFP cages, debug USB-uart ports, LEDs, etc. - This board is redesigned for different panel arrangement.
- WR Switch Box - is a 19'' 1U case. There are no cooling fans in the back - This box is specifically designed for passive cooling. The panel arrangement is different from WRS-3.4.
for the fan-less, constructive heat dissipation plays an important role too.
Project information
- Production documentation
-
Gateware for WR Switch
- compatible to WRS-3.4
-
Software for WR Switch
- compatible to WRS-3.4
- Frequently Asked Questions
- Low jitter function, coming soon
- Gallery
Releases
Contacts
Commercial producers
General question about project
Status
Date | Event |
05-11-2018 | Device commercially available. |
14 November 2018