Arduino/Chipkit Shield Connector - Xilinx Arty A7 Reference Manual

22.8.2018
switching speeds. The signals are paired to the adjacent signals in the same row: pins 1 and 2, pins 3 and 4, pins 7 and 8, and pins 9 and
10.
Traces are routed 100 ohm (+/- 10%) differential.
These connectors should be used only when high speed differential signaling is required or the other Pmods are all occupied. If used as
single-ended, coupled pairs may have significant crosstalk. In applications where this is a concern, the standard Pmod connector shall be
used. Another option would be to ground one of the signals (drive it low from the FPGA) and use its pair for the signal-ended signal.
Since the High-Speed Pmods have 0-ohm shunts instead of protection resistors, the operator must take precaution to ensure that they do
not cause any shorts.

11 Arduino/chipKIT Shield Connector

The Arty A7 can be connected to standard Arduino and chipKIT shields to add extended functionality. Special care was taken while
designing the Arty to make sure it is compatible with the majority of Arduino and chipKIT shields on the market. The shield connector
has 49 pins connected to the FPGA for general purpose Digital I/O. Due to the flexibility of FPGAs, it is possible to use these pins for
just about anything including digital read/write, SPI connections, UART connections, I2C connections, and PWM. Six of these pins
(labeled AN0-AN5) can also be used as single-ended analog inputs with an input range of 0V-3.3V, and another six (labeled AN6-11) can
be used as differential analog inputs.
Note: The Arty A7 is not compatible with shields that output 5V digital or analog signals. Driving pins on the shield
connector above 5V may cause damage to the FPGA.
Figure 11.1 diagrams the pins found on the shield connector of the Arty A7.
(https://reference.digilentinc.com/_media/arty/arty_shield_pins.png)
Figure 11.1 Arty A7 Shield Connector Pin Diagram
Pin Name Shield Function
IO0-IO13, General purpose
IO26-IO41, A I/O pins
(IO42)
https://reference.digilentinc.com/reference/programmable-logic/arty-a7/reference-manual
Arty A7 Reference Manual [Reference.Digilentinc]
Arty A7 Connection
See Section titled "Shield Digital I/O"
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