Digilent 240-009P User Manual

DDiiggiilleenntt FFXX22 BBrreeaaddbbooaarrdd RReeffeerreennccee MMaannuuaal
Revision: September 26, 2006 215 E Main Suite D | Pullman, WA 99163
l
www.digilentinc.com
(509) 334 6306 Voice and Fax
Overview
The Digilent FX2 Breadboard (FX2BB) offers a ready-made solution for prototyping breadboarded or wire-wrapped circuits as accessories to Digilent system boards. The FX2BB provides connectors suitable for direct connection of various Digilent system boards and Digilent Pmod
The FX2BB is available in a wire-wrap version or a solderless breadboard version.
Features include:
two 630 tie point breadboards separated by 100 tie point bus strip (solderless breadboard version)
32x65 hole wire-wrap area (wire-wrap version)
four 6-pin male header
four 6-pin female header
FX2 connector
prototype/wire-wrap connections on
every signal
two power buses and one ground plane.
Functional Description
Power Connections
The FX2BB provides two power busses and a ground bus. The two power busses are labeled VU and VCC. 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.
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 and the power supply used, other
TM
peripheral modules.
Figure 1
Digilent FX2 Breadboard
FX2 Connecter
J12 J13
Solderless
Breadboard or
W ire-wrap
J9 J10
J5-8J1-4
Male Pmod
Block Diagram
Female Pmod
Figure 2
voltages may be present. But observe caution before using any voltage other than 3.3V on the VCC bus. Most Digilent system boards will be damaged if the voltage on the VCC bus is greater than 3.3V.
®
Doc: 502-011 page 1 of 4
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
FX2BB Reference Manual
Digilent, Inc.
Banana jacks J14-J16 provide connection points for connecting external, bench power supplies to the board to power the busses.
Alternatively, the power busses can be powered from the FX2 connector or any of the Pmod connectors. When configuring power jumpers and powering the board, it is important that each power supply bus be powered from a single power source. Damage can occur if the same bus is powered by more than one source.
Hirose, 100 Pin, FX2 Connector
FX2 connector J11 is provided on one side of the board for connection to Digilent system boards like the Nexys that contain an FX2 style connector. The Digilent FX2 connector signal convention provides for forty general-purpose I/O signals, three clock signals, JTAG signals, and power busses.
The forty general-purpose I/O signals from the FX2 connector are brought out to connector J12. These signals are labeled IO1-IO40. See Table 1 for a description of the relationship between FX2 connector pins and signal names on J12. The remaining signals from the FX2 connector are brought out to connector J13. See Table 1 for a description of the relationship between FX2 connector pins and connector J13 signal names.
In addition to the FX2 connector signals, connector J13 also provides access to the power and ground busses.
Jumper blocks JP9 and JP10 are used to connect or disconnect the VU and VCC busses of the system board and the VU and VCC busses on the FX2BB. Shorting blocks are placed on JP9 and/or JP10 to connect the busses, or removed to disconnect the busses.
Pmod Connectors
Digilent Pmod peripheral modules provide various peripheral functions. These can be as simple as buttons or switches for inputs and LEDs for outputs, to as complex as graphical
LCD display panels, accelerometers and keypads.
All Digilent Pmod modules use a six-wire interface for connection to a system board. The interface provides four I/O signals, power and ground. The signal definitions for the four signals as well as the voltage requirements for the power supply depend on the specific module.
The system board connection is through a 6­pin male connector. In addition to the system board connection, many Pmods, such as A/D and D/A converters, provide interfaces to outside signals. These connections are made through a 6-pin female connector.
The FX2BB provides two sets of four 6-pin connectors for connection of Pmods. Connectors J1-J4 are male connectors for connection to the external signal side of Pmods like A/D or D/A converters. Connectors J5-J8 are female connectors for connection to the system board side of Pmods.
The signals for Pmod connectors J1-J4 are brought out to connector J9. These signals are labeled; J1, 1-4; J2, 1-4, etc. Similarly, the signals for Pmod connectors J5-J8 are brought out to connector J10 and labeled; J5, 1-4, etc.
Each Pmod connector has an associated power select jumper. The power select jumper for J1 is JP1 and so on. These jumpers are used to select one of the two power busses on the FX2BB to provide power to the power supply pin on a Pmod plugged into that connector position. Placing a shorting block in the VCC position provides VCC power to the Pmod. Placing a shorting block in the VU position provides VU power to the Pmod. Place a shorting block so that it hangs off of the center pin only, disconnects power to the Pmod.
Rev: July 18, 2006 www.digilentinc.com Page 2 of 4
FX2BB Reference Manual
Table 1: FX2 Signals and Connector Pinout
A
1 VCC 1 SHLD 2 VCC 2 GND 3 TMS 3 TDI (from host to peripheral) 4 JTSEL 4 TCK 5 TDO (From peripheral to host) 5 GND 6 IO1 6 GND 7 IO2 7 GND 8 IO3 8 GND
9 IO4 9 GND 10 IO5 10 GND 11 IO6 11 GND 12 IO7 12 GND 13 IO8 13 GND 14 IO9 14 GND 15 IO10 15 GND 16 IO11 16 GND 17 IO12 17 GND 18 IO13 18 GND 19 IO14 19 GND 20 IO15 20 GND 21 IO16 21 GND 22 IO17 22 GND 23 IO18 23 GND 24 IO19 24 GND 25 IO20 25 GND 26 IO21 26 GND 27 IO22 27 GND 28 IO23 28 GND 29 IO24 29 GND 30 IO25 30 GND 31 IO26 31 GND 32 IO27 32 GND 33 IO28 33 GND 34 IO29 34 GND 35 IO30 35 GND 36 IO31 36 GND 37 IO32 37 GND 38 IO33 38 GND 39 IO34 39 GND 40 IO35 40 GND 41 IO36 41 GND 42 IO37 42 GND 43 IO38 43 GND 44 IO39 44 GND
B
Digilent, Inc.
Rev: July 18, 2006 www.digilentinc.com Page 3 of 4
FX2BB Reference Manual
45 IO40 45 GND 46 GND 46 CLKIN (from peripheral to host) 47 CLKOUT (from host to peripheral) 47 GND 48 GND 48 CLKIO (from host to peripheral) 49 VU 49 VU 50 VU 50 SHLD
Digilent, Inc.
Rev: July 18, 2006 www.digilentinc.com Page 4 of 4
Loading...