Difference between revisions of "FPGA Test Board"
From Tech
Jump to navigationJump to search (→layout) |
(→layout) |
||
| Line 1: | Line 1: | ||
=TODO= |
=TODO= |
||
==layout== |
==layout== |
||
| − | * connect spartan-6 to papilio (FTDI, Flash memory, clk, power) |
||
* make all resistors on papilio 402, check capacitors |
* make all resistors on papilio 402, check capacitors |
||
* add header pins to FLASH SPI, to allow direct programming by raspberry (to work around possible problems in FTDI connections) |
* add header pins to FLASH SPI, to allow direct programming by raspberry (to work around possible problems in FTDI connections) |
||
| − | * add resistor-map to make simple DA converter |
||
* add location for oven-controlled crystal |
* add location for oven-controlled crystal |
||
* add LED's (many) |
* add LED's (many) |
||
| − | * |
+ | * Check layout 25MHz crystal (same as 32MHz papilio?) |
| + | * Power connector? |
||
==questions== |
==questions== |
||
Revision as of 03:29, 11 December 2013
TODO
layout
- make all resistors on papilio 402, check capacitors
- add header pins to FLASH SPI, to allow direct programming by raspberry (to work around possible problems in FTDI connections)
- add location for oven-controlled crystal
- add LED's (many)
- Check layout 25MHz crystal (same as 32MHz papilio?)
- Power connector?
questions
- polarity of CCR on Display Port cable? (wiki has pin 7 as +lane_2, wim pin 7 as -CCR) -- Oh, that's because the sink-side has the pinning reversed -- but then the polarity of MR is wrong
Components
- FPGA: vq100, FPBG (1mm) footprints
- Scope functionality:
- ADC
- Analog switches, farnell 1755412RL, TEXAS INSTRUMENTS - TS5A4594DBVR - IC, ANALOG SWITCH 5V SOT23-5: 1 ch, On resistance 4-7 Ohm, Seperation @ 100MHz: -34 dB
- opamp:
- 2112569, ANALOG DEVICES OPAMP, RRO, 300MHZ, 650V/µS, 8SOIC
- Video farnell 1495449, FHP3450IMTC14X FAIRCHILD, QUAD VIDEO, SMD, TSSOP14, large 1/f noise, but 4 ch, > 100MHz
- opamp:
- AWG functionality:
- AD9764 (14 bit, v02), F9425640 (EUR 14.96)
- Niet op voorraad: TEXAS INSTRUMENTS - DAC5662IPFB. - IC, DAC 12BIT 200MSPS DUAL 48TQFP, Farnell 1754791, EUR 1.40
- Dual 16 bit, 200MHZ DAC: MAX5875, digikey 28EUR
- 1000BaseT ethernet chip + connector
- 16 pin header
- ?? 96-pin harting connector?
- 25MHz/50MHz clock for instance
- POWER(1.2V, 2.5, 3.3?),
- LDO's farnell search for 1.2, 2.5, 3.3 V LDO's in SOT223
- 3.3V: farnell 2072301, EUR 0.34, SOT223
- 2.5V: farnell 7208340, EUR 0.21 SOT223
- 1.2V: farnell 2316819, EUR 0.24 SOT 223
- Switching:
- LDO's farnell search for 1.2, 2.5, 3.3 V LDO's in SOT223
- DisplayPort connector MULTICOMP RECEPTACLE, DISPLAY PORT, SMT, farnell 1686453, EUR 0.76 (with of plug: 20.0mm)
- CCR: pin 9/7, MR: pin 10/12; ML_Lane 0: pin 1/3, ML_Lane 1: pin 4/6
- Differential Cable Driver CLC001
- USB connector:
- farnell 2293752 € 0,60 Micro B connector, SMD; different layout than Papilio
- LEDs farnell 2001788,'bright yellow', 0402.
Xilinx PCB design guides
- Four and six layour PCB Design for Spartan-3E FT258 BGA
- Xilinx Spartan-6 FPGA PCB Design guide Lots of info about traces, capacitance, etc.
Other stuff
- SMD291 - FLUX farnell 1850216, digikey, or 5cc
- Differential impedance calculator eeweb
Todo/tocheck
- make papilio output +/- 71MHz differential signal, at several differential voltages.
- add footprints to eagle
- can spartan-differential easily be made compatible with rs484?
