EVB-USB5734 Datasheet, PDF (20/37 Pages) Microchip Technology – EVB-USB5734 Evaluation Board User’s Guide

EVB-USB5734
EVALUATION BOARD
USER’S GUIDE
Chapter 3. Configurable IO Modes
The Microchip EVB-USB5734 is designed for flexible configuration solutions. Five IO
daughter cards are included in the EVB-USB5734 kit. Each IO daughter card has a
2x10 connector on the bottom side of the board that has pin 3 keyed and has pin 1
clearly marked with a triangle on the silkscreen. In order to use the desired IO daughter
card, insert its keyed 2x10 header onto the keyed 2x10 IO connector J7 that is on the
EVB-USB5734. The pin one triangle indicator on the EVB-USB5734 should line up with
the pin one triangle indicator on the IO daughter card that is inserted. The sections
below describe the mode functions of each IO daughter card.
Note:
When configuring the USB5734 for IO Modes 1, 2, 3, 5, or 6, the jumper
placed across pins 19 and 20 of the J7 IO connector must be removed from
the EVB-USB5734. This jumper is only to be placed when configuring the
USB5734 into IO Mode 4: Custom GPIO Mode.
3.1 CONFIGURATION IO DAUGHTER CARDS
The USB5734 can be configured for different IO modes depending on the pull-up or
pull-down resistor chosen on the CFG_STRAP pin on the DUT. The table below shows
the different resistor values required for the different IO mode settings. These resistor
settings are populated by default on each IO daughter card.
TABLE 3-1:
MODE
1
2
3
4
5
6
CONFIG STRAP RESISTOR SETTINGS
Configuration
SIGNAL
CFG_STRAP Resistor
Suspend Mode
Flex Mode
USB Speed LEDs
Mode
C1_CONFIG
C2_CONFIG
C3_CONFIG
200kΩ
200kΩ
10kΩ
GPIO Mode
(default)
Battery Charging
Mode
CFG_STRAP 10kΩ
C5_CONFIG 10Ω
UART Mode
C6_CONFIG 10Ω
PU/PD STATUS
PD to GND
PU to 3V3
PD to GND
PU to 3V3
PD to GND
PU to 3V3
3.1.1 Mode 1: Suspend Mode
The Mode 1 IO daughter card configures the USB5734 into Suspend Indicator Mode.
Once inserted onto the EVB-USB5734, the “3V3” Power LED should turn on green.
An SMBus header J13 is provided as well for accessing the SMDAT and SMCLK sig-
nals of the USB5734 while in Suspend Mode. Additionally, 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.
LED indicators “PF1”and “PF2” are provided for when accessing the PROG_FUNC1
and PROG_FUNC2 signals on the USB5734. When these function pins are driven
high, their associated LED will turn on green. When these function pins are driven low,
their associated LED will be OFF. The “PF3” LED is provided to indicate the state of
 2015 Microchip Technology Inc.
DS50002350B-page 20