d d i i g g i i l l e e n n t t v v m m o o d d b b r r e e a a d d b b o o a a r r d d r r e e f f e e r r e e n n c c e e m m a a n n u u a a l l revision: december 15, 2010 1300 ne henley court, suite 3 pullman, wa 99163 (509) 334 6306 voice | (509) 334 6300 fax doc: 502-184 page 1 of 3 copyright digilent, inc. all rights reserved. other product and company names mentioned may be tradema rks of their respective owners. overview the digilent vmod breadboard (vmodbb) offers a ready-made solution for prototyping breadboarded or wire-wrapped circuits as accessories to digilent system boards. the vmodbb provides connectors suitable for direct connection of various digilent system boards. the vmodbb is available in a wire-wrap version or a solderless breadboard version. features include: ? vhdci connector for connection to digilent system boards ? two 32 pin breadboards with 16 pins each, connected directly to signals from the system board ? two power and one ground bus around ? prototype connections on every signal ? ships with two 300 tie point breadboards separated by a 100 tie point bus strip. functional description the digilent vmod breadboard (vmodbb) is used to connect a breadboard to the vhdci connector and implement up to 28 io signals to or from digilent system boards. power connection the vmodbb provides two power busses and a ground bus. the two power busses are labeled vu and vcc and are powered through the vhdci connector. these two busses are made available at each connector position on the board. there is also a ground plane that connects the ground pins from all connectors together. figure 1 digilent vmod breadboard the usual digilent convention is to power the vcc bus at 3.3v and the vu bus at 5.0v. however depending on the system board connected, other voltages may be present. 68 pin, vhdci connector vhdci connector j1 is provided on one side of the board for connection to digilent system boards like the genesys that contain a vhdci style connector. the digilent vhdci connector signal convention provides for 40 general- purpose i/o signals. 28 of the 40 general-purpose i/o signals from the vhdci connector are brought out to connectors bb1 and bb2. these signals are labeled io1-io28. see table 1 and table 2 for a description of the relationship between vhdci connector pins and signal names on bb1 and bb2.
vmodbb reference manual digilent, inc. rev: december 10, 2010 www.digilentinc.com page 2 of 3 table 1: vhdci signals and connector pinout j1 1 io1 35 io15 2 gnd 36 gnd 3 io2 37 io16 4 io3 38 io17 5 gnd 39 gnd 6 io4 40 io18 7 io5 41 io19 8 gnd 42 gnd 9 io6 43 io20 10 io7 44 io21 11 gnd 45 gnd 12 io8 46 io22 13 io9 47 io23 14 gnd 48 gnd 15 io10 49 io24 16 vcc 50 vcc 17 vu 51 vu 18 vu 52 vu 19 vcc 53 vcc 20 io11 54 io25 21 gnd 55 gnd 22 io12 56 io26 23 io13 57 io27 24 gnd 58 gnd 25 io14 59 io28 26 io29- 60 io35- 27 gnd 61 gnd 28 io30- 62 io36- 29 io31- 63 io37- 30 gnd 64 gnd 31 io32- 65 io38- 32 io33- 66 io39- 33 gnd 67 gnd 34 io34- 68 io40- s1 shield s2 shield note: signal names appended with ?-? are not used
vmodbb reference manual digilent, inc. rev: december 10, 2010 www.digilentinc.com page 3 of 3 table 2: bb1 and bb2 signals bb1 bb2 1 vcc 1 vu 2 gnd 2 gnd 3 io1 3 io15 4 io2 4 io16 5 io3 5 io17 6 io4 6 io18 7 io5 7 io19 8 io6 8 io20 9 io7 9 io21 10 io8 10 io22 11 io9 11 io23 12 io10 12 io24 13 io11 13 io25 14 io12 14 io26 15 io13 15 io27 16 io14 16 io28
|
