DEFAULT PROGRAM
The factory-default program on DC2654A is based on
the CYPD3125-40LQXI_notebook example project that
comes with the EZ-PD CCG3 SDK. The main differences
are the addition of variable sink power profile and the
operation of the on-board LED. The LED (D1) operates
as shown in Table 1.
Table 1. LED (D1) Operation
LED STATE
BOARD STATUS
Off
Power Switches Off, Load Has No Power
On
Power Switches On, Load Has at Least 5V
Blinking
SMBAlert Is Asserted Low
SOURCE MOSFETs
Components M5, M6, R8, and R9 are left unpopulated
by default, making DC2654A operate as a sink-only
device. In order to operate as a source, these compo-
nents can be purchased separately and installed to the
relevant footprints. Table 2 shows the part numbers for
these components.
Table 2. Part Number for Source Components
COMPONENT MANUFACTURER
PART NUMBER
M5, M6
Toshiba
SSM6K513NU, LF
R8, R9
Any 10MΩ 0402
Resistor
USE WITH CUSTOM DESIGNS
While in the early design phase, it may be helpful to simply
use DC2654A as a simple breakout board for the EZ-PD
CCG3. The banana plug outputs have an industry-stan-
dard spacing which can serve as an input to many boards
with banana jacks. This may serve as a simple way to con-
nect any board to a wall outlet using any USB-C adapter.
This spacing as well as spacing for the header that mates
with J3, can be copied from gerbers for any demo boards
compatible with DC2654A (such as DC2038A).
Software to interface with specific demo boards can be
found on the DC2654A product page. Follow any instruc-
tions within those software downloads to program the
DC2654A with application-specific firmware examples.
The generic software, which just passes a USB-C adapt-
er’s highest available voltage to a sink, is also available
from the DC2654A product page.
MiniProg3 PROGRAMMER/DEBUGGER
To program DC2654A, you will need a MiniProg3 Pro-
grammer/Debugger. This can be used for uploading a
hex file as well as programming and debugging your
own project. The MiniProg3 can be purchased through
Cypress Semiconductor’s website or third-party distribu-
tors. The 5-pin header on the MiniProg3 connects to J2
on DC2654A as shown below. The CCG3 can be repro-
grammed in-circuit with or without USB power applied.
EZ-PD SOFTWARE DEVELOPMENT KIT
After acquiring a MiniProg3 debugger, download the
EZ-PD SDK for CCG3. Be sure to consult the instructions
in the firmware download for the demo board that you will
be interfacing with to determine the version of the SDK
that should be used.
3
Rev. 0
Figure 4. MiniProg3 Connected to DC2654A for Programming and Debugging
BOARD OPERATION
PROGRAMMING INSTRUCTIONS