User manual

Basys MX3™ Board Reference Manual
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Other product and company names mentioned may be trademarks of their respective owners.
Page 45 of 56
Although ESD protection is provided between the connector pins and the microcontroller pins, ESD safe handling
procedures should be followed when handling the circuit board. The pins on the microcontroller and other circuits
on the board are exposed and can be damaged through ESD when handling the board.
Digilent Pmods can either be plugged directly into the connectors on the Basys MX3 or attached via cables.
Digilent has a variety of Pmod cables available.
You can read more details about the Digilent Pmod Interface Specification from the most recent specification
document, available on the Digilent Pmod Wiki.
21 Analog Discovery Debug Header
The Basys MX3 board provides a 2x15 Debug Header, exposing some pins that allow key onboard peripheral
signals to be visualized with an oscilloscope or logic analyzer.
Figure 21.1. Debug header schematic diagram.
The connector is designed to match the Analog Discovery and OpenScope connectors, but the pins can be used
with other tools as well.
Table 21.1 below shows the signals exposed by this connector.
Pin #
Silk Screen
Name
Type
Connected to / Module
Analog Discovery pin
1
SPI_SI
RPF2/RF2
SPI_SI / Flash memory
Digital IO 7
2
BIN2
AN5/C1INA/RPB5/RB5
BIN2 / Motor driver
Digital IO 15
3
SPI_CE
RPF8/RF8
SPI_CE / Flash memory
Digital IO 6
4
BIN1
RPE9/RE9
BIN1 / Motor driver
Digital IO 14
5
SPI_SO
RPF7/RF7
SPI_SO / Flash memory
Digital IO 5
6
AIN2
RPE8/RE8
AIN2 / Motor driver
Digital IO 13
7
SPI_SCK
RPF6/SCK1/INT0/RF6
SPI_SCK / Flash memory
Digital IO 4
8
AIN1
PGED3/AN3/C2INA/RPB3/RB3
AIN1 / Motor driver
Digital IO 12
9
D_RS
AN15/RPB15/PMA0/CTED6/RB15
DISP_RS / LCD module
Digital IO 3
10
IRRX
PGEC2/AN6/RPB6/RB6
IR_RX / IrDA module
Digital IO 11