PIC32MZ datasheet(17/30 Pages) MICROCHIP

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Hardware

 2015 Microchip Technology Inc.

DS70005230A-page 17

2.1.8

168-pin Modular Expansion Connector

The PIC32MZ Embedded Connectivity with Floating Point Unit (EF) Family Starter

Kit has been designed with a 168-pin modular expansion interface, which allows

the board to provide basic generic functionality and easy extendability to new

technologies as they become available.

2.1.9

Ethernet PHY

The Microchip LAN8740A PHY Daughter Board is populated with a low-power, small-

footprint, 10/100 Fast Ethernet LAN8740A PHY, which features Energy Efficient

Ethernet (IEEE 802.3az) and Wake-on-LAN functionality. This daughter board is

designed for easy development of RMII Ethernet control applications when it is

connected into a compatible PIC32 starter kit.

To use a different Ethernet PHY other than what is offered, visit the microchipDIRECT

website (www.microchipdirect.com) for the list of alternate options.

2.1.10

USB-to-UART/I2C Communication

To facilitate application debug and development, a MCP2221 USB-to-UART/I2C device

(U8) is available. The MCP2221 creates a virtual COM port on the personal computer

when a mini-USB cable is connected between J11 and the host personal computer. To

download the driver for the MCP2221, please visit the MCP2221 product page

(www.microchip.com/MCP2221).

Libraries are also available on the MCP2221 web site that allow the host PC to

communicate with the PIC32MZ EF device through the I2C bus. Pull-up resistors are

provided (R64 and R65).

If the features of the MCP2221 are not desired, disconnect the MCP2221 from the

PIC32MZ EF device by removing resistors R66, R67, R68, and R69.

Table 2-2 lists the MCP2221 UART and I2C pins that are connected to the PIC32MZ

EF device.

TABLE 2-2:

MCP2221 UART PIN CONNECTIONS

Three LEDs (D8, D9, and D11) are available to provide a visual indication of activity on

the MCP2221. D8 is a red LED, which indicates receive activity (data from the PIC32).

D9 is a green LED, which indicates transmit activity (data to the PIC32). D11 is a yellow

LED, which indicates activity on the I2C bus.

TABLE 2-1:

STARTER KIT CONNECTOR PART NUMBERS

Connector

HIROSE Electric PN

Starter Kit Connector

FX10A-168P-SV1(71)

Application Board Connector

FX10A-168S-SV

MCP2221

PIC32MZ EF Device

PIC32MZ Device

UART/I2C

Function

Pin #

Function

Pin #

Full Pin Name

AN9/RPB14/SCK3/RB14

U2TX

AN14/C1IND/RPG6/SCK2/RG6

U2RX

SCL

AN12/C2IND/RPG8/SCL4/RG8

SCL4

SDA

AN13/C1INC/RPG7/SDA4/RG7

SDA4

Note 1:

The CTS and RTS functions are not required, but are available if desired. The

MCP2221 configuration utility can be used to turn those functions on and off.

Note:

Since the MCP2221 receive (RX) line shares the same pin as SW3, SW3

cannot be used in an application where the MCP2221 is also used.

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