1 / 7

GCT Main Crate Status Hardware & Firmware

GCT Main Crate Status Hardware & Firmware. Hardware. Tested hardware 16 Leaf cards Fully tested 3 Concentrator cards Except Slink path (awaiting software) 3 Wheel cards Some may need JTAG fix Further 2 recently received from ElFab 2 GTI (Getty) cards Fully tested

monifa
Télécharger la présentation

GCT Main Crate Status Hardware & Firmware

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GCT Main Crate StatusHardware & Firmware GCT Status: Greg Iles

  2. Hardware • Tested hardware • 16 Leaf cards • Fully tested • 3 Concentrator cards • Except Slink path (awaiting software) • 3 Wheel cards • Some may need JTAG fix • Further 2 recently received from ElFab • 2 GTI (Getty) cards • Fully tested • 12 OGTI (Oogetty) cards • Artwork/Netlist to be sent to ElFab today • All major parts in hand • Will make 12 PCBs (cost the same for 2) • Need to get quote for assembly from Exception • Will use if not too expensive • Will request that GT group considfer moving GTLP signals onto motherboard • no change to OGTI GCT Status: Greg Iles

  3. Firmware • Firmware stable: • No new suprises when design resynthesised • Tweaking firmware • To do list: • Understand discrepancy between Data and BC0 observed at Concentrator • Add TotalEt, MissEt, TotalHt • Add status info to slink packet • e.g. number of operating links • Latency reduction • Change DDR regs between Wheel/Conc (1bx) • Reduce processing time in Wheel (1bx) • OGTI • Firmware being asembled (see separate slide) GCT Status: Greg Iles

  4. USC55 • Refurbish USC55 System • Swap Wheel for one with JTAG fix • Bolt Leaf Sharing Samtec Cables (one wheel) • Increase clearance on front panels • Improve safety of power supply • Protect power bin connectors • Crate power bin connectors are deep inside the rack • If you were very determined you might be able to short connectors out with something like a screwdriver • Highly unlikely scenario, but ought to protect power bin connectors • Not completely trivial because cannot use original power bin cover • Double insulate the ends of power cables. Single layer of heavy duty heatshrink between GND/+5V on power bin at present. • Just make this more robust. • Main Crate JTAG • Was to be done via VME • Xilinx ISE now allows you to program multiple FPGAs in one go. • Perhaps we should just use this? • Can save load config GCT Status: Greg Iles

  5. OGTI-Tx • Tx firmware • Unable to find ‘nice’ way to extend source card timing constraints to a large system • No nice way of tagging requirement in VHDL • Oversample incoming 80MHz data at up to 400MHz. • Choose optimum sampling point, if it exists, for each 100MHz clock • Advantages: • Bridges into 100MHz domain in < ½ bx • Automatically adjusts for phase of 80MHz data • No constraints in UCF • Disadvantage: • Need to run input clks quite quick • Not that generic • 2.4Gb/s link or 3.2Gb/s link would require slight tweak to firmware • Requires data valid type signal from conc card. • Assumes input data aligned to better than 1ns GCT Status: Greg Iles

  6. OGTI-Rx • Rx firmware • Want links to automatically align • Will not try to “reinvent wheel” • Use existing code from John or Magnus • Magnus’ code • Will probably be backwards compatible with current software • May split link config into setup/auto-align • find optimum latency position in receive fifo using software • then relatively trivial to have each link auto-align in firmware • Still being written…. • John’s code • All sorts of clever ideas ! • E.g. use of k-codes (albeit with small latency hit) • Perhaps more R&D • Also still being written… ? GCT Status: Greg Iles

  7. End GCT Status: Greg Iles

More Related