EVB-USB5734 datasheet(21/37 Pages) MICROCHIP

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EVB-USB5734 Evaluation Board User’s Guide

DS50002350B-page 21

 2015 Microchip Technology Inc.

the PF3 Select switch (SW12) as described below. A “USB 2.0 Susp” LED is also pro-

vided to indicate when USB 2.0 on the USB5734 is in suspend or active mode. When

in suspend mode, this LED will turn on yellow. When in active mode, this LED will turn

on green.

There are two slide switches provided on this daughter card. The PF3 Select switch

(SW12) allows the user to manually select whether PROG_FUNC3 will be driven high

or low. The default position is to slide this switch into the 0 or Low position. With this

switch in the low position, as mentioned above, the associated “PF3” LED will be OFF.

When the PF3 Select switch is switched into the 1 or High position, the associated

“PF3” LED will turn on green. The second slide switch is the Flex_CMD Select switch

(SW9). This switch allows the user to manually set the USB5734 into Flex mode. The

default setup is to slide the Flex_CMD Select switch into the 0 or Low position which

will turn the “FLEXCMD” LED OFF. When the Flex_CMD Select switch is in the 1 or

High position, the “FLEXCMD” LED will turn on orange and the “USB 2.0 Susp” LED

will turn on yellow to indicate that the USB5734 is in Flex mode.

FIGURE 3-1:

IO MODE 1 DAUGHTER CARD

3.1.2

Mode 2: Flex Mode

The Mode 2 IO daughter card configures the USB5734 into Flex Mode. Once inserted

onto the EVB-USB5734, the “3V3” Power LED should turn on green. An SMBus

header J16 is provided as well for accessing the SMDAT and SMCLK signals of the

USB5734 while in Flex Mode. Additionally, the GPIO4/GPIO5 headerJ28 can be used

in this mode to access the digital RX and TX UART signals. When accessing these sig-

nals, the J27 header must be left open and the J5 header must have a shunt placed

across pins 2 and 3.

LEDs “Port0” and “Port1” are indicators for the USB Host bus speed. During Flex

mode either Port 0 or Port 1 can be the USB host, and only the corresponding USB

host LED will turn on. The LED color will indicate the USB host bus speed: yellow indi-

cates USB 2.0 and blue indicates USB 3.0.

There is one slide switch provided on this daughter card. The Flex_CMD Select switch

(SW11) allows the user to manually set the USB5734 into Flex mode. The default setup

is to slide the Flex_CMD Select switch into the 0 or Low position which will turn the

“FLEXCMD” and “Flexed” LEDs OFF. When the Flex_CMD Select switch is in the 1

or High position, the “FLEXCMD” and “Flexed” LEDs will turn on orange to indicate

that the USB5734 is in Flex mode.

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