EVB-USB5734 Datasheet, PDF (23/37 Pages) Microchip Technology – EVB-USB5734 Evaluation Board User’s Guide

EVB-USB5734 Evaluation Board User’s Guide
FIGURE 3-4:
IO MODE 4 (NO DAUGHTER CARD)
3.1.5 Mode 5: Battery Charging LEDs Mode
The Mode 5 IO daughter card configures the USB5734 IO signals to indicate Battery
status, with three IO signals configured as GPIO signals. Once inserted onto the
EVB-USB5734, the “3V3” Power LED should turn on green. The GPIO4/GPIO5 head-
erJ28 can be used in this mode to access the digital RX and TX UART signals. When
accessing these signals, the J27 header must be left open and the J5 header must
have a shunt placed across pins 2 and 3.
There are seven LEDs on this daughter card. The first four LEDs labeled P1 to P4 indi-
cate the battery charge status of Ports 1 through 4. The LEDs “P1” - “P4” will turn on
green to indicate that battery charging is enabled on the corresponding USB port. If a
battery charging device is connected to a BC enabled port and BC1.2 negotiation is
successful, the corresponding LED will turn yellow. There are also three GPIO LEDs
on this daughter card that are labeled “PF5” - “PF7”. LEDs “PF5” and “PF6” are indi-
cators for when GPIO8 and GPIO10 are set as outputs using the USB to GPIO bridge
function. When these pins are driven high, the associated “PFx” LED(s) will turn on
green. When these pins are driven low, the associated “PFx” LED(s) will be OFF. The
“PF7” LED is provided to indicate the state of the PF7 Select switch (SW10) as
described below.
There is one slide switch on this daughter card. The PF7 Select switch (SW10) allows
the user to manually select whether the PROG_FUNC7 pin should be driven high or
low. The USB to GPIO bridge function is used to configure GPIO11 and sample the
state of SW10. The default setup is to slide this switch into the 0 or Low position which
will turn the “PF7” LED off. When the PF7 Select switch is in the 1 or High position, the
“PF7” LED will turn on green.
FIGURE 3-5:
IO MODE 5 DAUGHTER CARD
3.1.6 Mode 6: UART Mode
The Mode 6 IO daughter card configures the USB5734 into UART Mode. To insert this
daughter card onto the EVB-USB5734, mate its 2x10 connector on the bottom side with
the 2x10 IO connector on the EVB-USB5734, as done with the other IO cards. This
daughter card has an additional standoff that inserts between the daughter card and
the main EVB which provides extra support to the IO card.
DS50002350B-page 23
 2015 Microchip Technology Inc.