02/06/2014James Leaver Slink Transition Card

02/06/2014James Leaver Slink Transition Card Simple 6U board: –Provides interface between FED and Slink Transmitter –Provides access to FED Throttle signals Slink Transmitter Slink Transition Card Ethernet Connector FED Slink Data & Control Signals FED Throttle Signals VME Backplane 6U

02/06/2014James Leaver Features Board takes +5V from VME, generates +3.3V and +2.5V Slink data and control lines from FED are buffered to provide cleanest possible signals Differential Slink clock from FED converted to single-ended FED throttle signals converted to LVDS and output via Ethernet connector Status LEDs for voltage levels and the 2 spare BE FPGA signals (for debugging)

02/06/2014James Leaver Layout Power Supply Status LEDs LVDS Driver & Ethernet Connector S-Link Transmitter Card Mounting Buffers Clock Driver VME 64x Connector

02/06/2014James Leaver Production Costs DDi: –3 Boards = £ (10 days) –450 Boards = £13, (20 days) Express Circuits: –3 Boards = £ (10 days) –450 Boards = £9,694 (20 days) Have received PCB manufacture quotations from DDi and Express Circuits: (Ex. VAT)

02/06/2014James Leaver Production Costs Express Circuits significantly cheaper ( %) BUT: Have yet to obtain assembly quotations Currently unsure whether DDi or Express Circuits + Cemgraft will provide better manufacture & assembly package First three boards will be ordered from Express, and assembled in-house –Component cost for 3 boards: ~£250

02/06/2014James Leaver Transition Card Testing Simple board simple test requirements –Output test patterns from FED via Slink through Transition Card –Receive and verify test patterns –Errors on Transition Card should appear as incorrectly set bits in data transmission – easily traceable to specific contacts on board If prototype functions correctly, then further errors should be identified by manufacturer connectivity test

02/06/2014James Leaver Timeline A rough indication of the expected Transition Card progress over the coming weeks: Time (Days) Schematic complete, virtually all components obtained, layout progressing well Layout complete, order requested 3 Slink Transition Card PCBs received All Transition Cards populated All Transition Cards tested