FUSB302GEVB
2
connects the I
2
C master to the FUSB302. The EVB
automatically generates a regulated 1.8 V supply, U6, which
is used by an external I
2
C translator to set the I
2
C levels used
with the FUSB302.
Regulator
for 1.8V IO
PC
Connector
Test Points
PIC programming
Port
Status
LEDs
Type
−
C
™
Connector
3.3V Regulator
Figure 1. EVB Layout
TYPE
−
C SIGNAL CONNECTIONS
The FUSB302 EVB allows different ways of connecting
to another Type
−
C device or controlling the signals of the
Type
−
C receptacle based on the type of testing that is
required.
CC Pins
The Type
−
C CC1 and CC2 pins are directly connected to
the Type
−
C receptacle J1 on the board. There is also a test
point for each pin that can be used to connect the CC pins
externally. Note that the FUSB302 EVB contains the
minimum cReceiver capacitance specified in the USB PD
specification for the CC pins which is 200pF. This
capacitance is C6 and C7 in the schematic.
VBUS
VBUS is used differently based on the Type
−
C port type.
As a sink port, VBUS is directly connected to the Type
−
C
receptacle J1 and the VBUS test point located near J1. As a
source port, VBUS can be supplied to the receptacle J1 and
controlled by the FUSB302 GUI. When controlled by the
FUSB302 software, VBUS is supplied from the PC micro
−
B
USB connection. The FUSB302 software uses an on board
load switch to control the enabling of VBUS to the Type
−
C
receptacle.
VCONN
VCONN is supplied to the FUSB302 from the VBUS pin
of the PC connection. To supply VCONN externally,
remove R6 and apply the external VCONN to the VCON test
point. Note that the EVB has 10
µ
F on VCONN input of the
FUSB302 which is the minimum bulk capacitance specified
in the Type
−
C specification. This capacitance is C4.
USB2.0 and SBU
They are left open in the Type
−
C connector and no
connections in the board.
STATUS LEDs
The following status LEDs are provided on the EVB.
Table 1. STATUS LEDs
LED
Status
D1
VDD is Supplied to FUSB302
D2
VCONN is Supplied to FUSB302
