FPGA Test Board

TODO

layout

• connect spartan-6 to papilio (FTDI, Flash memory, clk, power)
• 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 resistor-map to make simple DA converter
• add location for oven-controlled crystal
• add LED's (many)

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
  • Spartan 3 (datasheet)
    • XC3S100E-4VQG100C digikey 122-1479-ND, EUR 8.56
    • XC3S500E-4FTG256C digikey 122-1485-ND, EUR 24.74
  • Spartan 6 (spartan 6 family overview, Spartan 6 DC switching)
    • XC6SLX16-2FTG256C digikey, EUR 19.43
    • XC6SLX9-2TQG144C digikey 122-1745-ND, 13 EUR

• Scope functionality:
  • ADC
    • TI, ADC08200CIMT, 8BIT 200MSPS ADC, 500MHz Bandwidth, Farnell 8206805, EUR 10.9
    • TI TVP7002PZP - IC, VIDEO DIGITZR 10/8 bit, 110/165MHz, 3 ch, 350MHz Bandwith, Farnell 1755604, 6.4EUR
    • LowFreq: MAX11060GUU+-ND, 3MHz, 16 bit, 4 ch, digikey MAX11060GUU+-ND, 11.8 EUR
  • 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

• 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
  • LAN7500, Farnell 2292572, EUR 7.18, Digikey, EUR 4.07
• 16 pin header
• ?? 96-pin harting connector?
• 25MHz/50MHz clock for instance
  • FOX ELECTRONICS - FXO-HC536R-25: 25MHz, 3.3V, 25ppm,farnell 1641039 (EUR 1.79),
  • FOX ELECTRONICS - FXO-HC536R-50: 50MHz, 3.3V, 25ppm, farnell 1641047 (EUR 1.79)

• 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:
    • TI DC/DC CONV, STEP DOWN, 1.6V, SOT23-5, 300mA, Farnell 1461064, EUR 0.127
    • LT, BUCK CONV, 1.5MHZ, 700MA, 16QFN 0.5--5V -> 1.5--5V farnell 1715228
    • TPS62110, farnell 1180173

• FTDI2232, FTDI - FT2232D/TR - USB-UART Farnell 1615843, EUR 8.44, digkey 768-1010-1-ND

• 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?

See Also

• FPGA
• Papilio