Digilent 410-211P-KIT - Manual (Page 3)

chipKIT™ Network Shield™ Board Reference Manual
Copyright Digilent, Inc. All rights reserved.
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Page 3 of 10
8. Digital Signal Connector
This connector provides most of the signals used by the Ethernet and USB interfaces from the Max32
board to the Network Shield. The remaining signals are passed through the Network Shield.
9. J7: I
2
C #1 Daisy Chain Connector
This is a 2x4 pin header connector that provides access to the I
2
C signals SDA and SCL as well as
power from the 3.3V power bus and ground. This can be used to extend the I
2
C bus off the board and
to power an external I
2
C device. Digilent has cables and a selection of I
2
C peripheral modules that can
be accessed using this connector.
10. J6: I
2
C #2 Daisy Chain Connector
This is a 2x4 pin header connector that provides access to the I 2 C signals SDA and SCL as well as
power from the 3.3V power bus and ground. This can be used to extend the I 2 C bus off the board and
to power an external I
2
C device. The jumpers for disabling the on-board pull-ups are adjacent to this
connector.
11. Digital Signal Connectors
Some of the signals used by the Network Shield are provided on these connectors. The rest of the
signals are passed through the Network Shield.
12. J19: I 2 C
Dedicated I
2
C signals. These signals are connected directly to I
2
C1 on the microcontroller and are
shared with pins 20 and 21 on connector J4.
2 chipKIT Network Shield Hardware Description
2.1 Introduction
The following describes the hardware on the Network Shield and how to use it. Appendices at the end show pin-
out and connection tables.
The Network Shield is designed to be used with the chipKIT Max32 board. When used together, the two boards
have the necessary supporting hardware and connectors to use all the advanced communications and networking
features of the PIC32MX795F512L microcontroller on the Max32.
2.2 Ethernet Interface
The Network Shield can interface with 10Mbps or 100Mbps Ethernet networks. The PIC32MX795 microcontroller
on the chipKIT Max32 board contains a 10/100 Ethernet Medium Access Controller (MAC). The Network Shield
provides an SMSC LAN8720 Ethernet Physical Layer Transceiver (PHY). Together, the MAC and PHY provide a
complete 10/100 Ethernet interface.
The RJ45 connector J1 provides the physical connection to an Ethernet network using a standard Ethernet cable.