Digilent PmodBB User manual

1300HenleyCourt
Pullman,WA99163
509.334.6306
www.digilentinc.com
PmodBB™ ReferenceManual
RevisedFebruary13,2015
ThismanualappliestothePmodBBrev.A
DOC#: 502-136
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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Overview
The Digilent PmodBB is handy prototyping platform that can plug directly into a Pmod header on your system
board. It has a 14×19 wire wrap surface as well as a 170 tie point solderless breadboard that can be snugly placed
on top of the perfboard.
1 FunctionalDescription
The PmodBB is able to act as an intermediary module between the system board and external circuitry. This is
useful if you need a small area to add a filter to process the incoming signals or a visual indicator showing the
status or strength of the signals.
2 InterfacingwiththePmod
The PmodBB is connected to the system board so that all of pins are pass through. Any specific protocol would be
dependent on the circuitry placed on the module. The two jumper blocks, JP1 and JP2, tie the positive power and
ground lines of both ends of the module together, respectively. Headers J2 and J3 are directly tied to the Pmod
headers J1 and J4, respectively, for easy prototyping access.
The PmodBB.
Two 2×6 headers to connect the PmodBB
from the system board to another module
Optional jumper blocks to tie the power
pins on both sides of the Pmod together
14×19 perfboard with power and ground
rails
170 tie point solderless breadboard
Features include:

PmodBB™ Reference Manual
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 2of 2
The first and last column of 14 holes on the wire wrap surface each have two sets of seven holes to create mini-
buses for the the positive power supply and ground power supply of both ends of the PmodBB.
A pinout table of the headers on the PmodBB is provided below:
Headers J1 and J2
Headers J3 and J4
Jumper JP1
Pin
Signal
Description
Pin
Signal
Description
State
Description
1
P1
Pin 1
1
P1
Pin 1
Loaded
VA and VB are tied
together
2
P2
Pin 2
2
P2
Pin 2
Jumper JP2
3
P3
Pin 3
3
P3
Pin 3
State
Description
4
P4
Pin 4
4
P4
Pin 4
Loaded
GA and GB are tied
together
5
GA
Power Supply
Ground
5
GB
Power Supply
Ground
6
VA
Power Supply
(3.3V/5V)
6
VB
Power Supply
(3.3V/5V)
7
P7
Pin 7
7
P7
Pin 7
8
P8
Pin 8
8
P8
Pin 8
9
P9
Pin 9
9
P9
Pin 9
10
P10
Pin 10
10
P10
Pin 10
11
GA
Power Supply
Ground
5
GB
Power Supply
Ground
12
VA
Power Supply
(3.3V/5V)
6
VB
Power Supply
(3.3V/5V)
Table 1. Connector J1: Pin descriptions as labeled on the Pmod.
Any external power applied to the PmodBB must be safe operating limits of the any on-board or external circuitry
attached to it. Typically, this means that PmodBB must be operated at 3.3V or 5V.
3 PhysicalDimensions
The pins on the pin header are spaced 100 mil apart. The PCB is 3.5 inches long on the sides parallel to the pins on
the pin header and 1.5 inches long on the sides perpendicular to the pin header.