410-136 Digilent

1300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com PmodBB Reference Manual Revised May 24, 2016 This manual applies to the PmodBB rev. A Overview The Digilent PmodBB is handy prototyping platform that can plug directly into a Pmod header on your system board. It has a 1419 wire wrap surface as well as a 170 tie point solderless breadboard that can be snugly placed on top of the perfboard. Features include: 266 tie point wire wrap area 170 tie point solderless breadboard Jumper blocks to tie the power pins together Additional Pmod host port Small PCB size for flexible designs 3.5 1.5 (8.9 cm 3.8 cm) 12-pin connector, all signals pass through The PmodBB. 1 Functional Description 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 Interfacing with the Pmod 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. Copyright Digilent, Inc. All rights reserved. DOC : 502-136 Page 1 of 2 Other product and company names mentioned may be trademarks of their respective owners. PmodBB Reference Manual 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 VA and VB are tied 1 P1 Pin 1 1 P1 Pin 1 Loaded together 2 P2 Pin 2 2 P2 Pin 2 Jumper JP2 3 P3 Pin 3 3 P3 Pin 3 State Description GA and GB are tied 4 P4 Pin 4 4 P4 Pin 4 Loaded together Power Supply Power Supply 5 GA 5 GB Ground Ground Power Supply Power Supply 6 VA 6 VB (3.3V/5V) (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 Power Supply Power Supply 11 GA 5 GB Ground Ground Power Supply Power Supply 12 VA 6 VB (3.3V/5V) (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 Physical Dimensions 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. Copyright Digilent, Inc. All rights reserved. Page 2 of 2 Other product and company names mentioned may be trademarks of their respective owners.