FUSB303EVBUM
FUSB303 Evaluation Board
User's Manual
Introduction
The FUSB303 evaluation board and included software allows
customers a complete platform to evaluate the Type−Ct interface
detection solution the FUSB303 provides. The evaluation board is
designed for both stand−alone operation and connection to test
equipment for specific testing requirements. With a single connection
to a PC and using the FUSB303 GUI (Graphical User Interface), or
with just a power supply, the evaluation board can be configured and
function as a Source, Sink, or DRP device with Accessory detection
support.
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EVAL BOARD USER’S MANUAL
Description
The FUSB303 device is a fully autonomous USB Type−Ct
controller optimized for 15W or less applications. The FUSB303
offers CC logic detection for Source Port role, Sink Port role, DRP
Port role, and accessory detection support, as well as Dead Battery
support as defined in USB−C specifications. The FUSB303 features
configurable I2C address to support multiple ports per system or it can
operate autonomously configured by just pins. The FUSB303 features
ultra−low power during operation and an ultra−thin, 12 Lead QFN
package.
Features
• Fully Autonomous USB Type−Ct Port Controller
• Supports USB Type−Ct Specification Release 1.2
• Source, Sink, and DRP Port role Configuration with Optional
•
•
•
•
•
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•
Accessory Support
Try.SRC and Try.SNK modes for Preferring Source Role or Sink
Role Respectively
VDD Operating Range: 2.7 V – 5.5 V
Typical Low Power Operation: ICC < 10 mA
GPIO and I2C Configurable
Dead Battery Support (Sink Port role when No Power Applied)
4 kV HBM ESD Protection for Connector Pins
Small Packaging: 12 Lead QFN (1.6 mm x 1.6 mm x 0.375 mm)
© Semiconductor Components Industries, LLC, 2016
January, 2018 − Rev. 1
1
Publication Order Number:
EVBUM2519/D
FUSB303EVBUM
Test points
PC connector
Configuration jumpers
3.3 V regulator
Type Ct connector
Status LEDs
Figure 1. Evaluation Board Layout
APPLICATIONS INFORMATION
Type−C™ Signal Connections
The FUSB303 evaluation board allows different ways of
connecting to another Type−Ct device or controlling the
signals of the Type−Ct receptacle based on the type of
testing that is required.
Power Configuration
The FUSB303 evaluation board is designed to be powered
from just the PC connection or powered externally based on
testing requirements.
CC Pins
The Type−Ct CC1 and CC2 pins are directly connected
to the Type−Ct 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 FUSB303 evaluation board
contains the minimum cReceiver capacitance specified in
the USB PD specification for the CC pins which is 200pF.
This capacitance is C8 and C9 in the schematic.
Power Supplied From Board
The FUSB303 can fully operate from the VBUS input of
the micro−B USB receptacle J2. To operate the evaluation
board, the USB power should be provided to the board over
the micro−B USB connector. Then, the on−board regulator
generates VDD, which is 3.3V for the device supply. Once
valid USB power is provided, the indicator LED, “PWR”,
will be turned on.
VBUS
I2C Communication
VBUS is used differently based on the Type−Ct port
type. As a device/UFP port, VBUS is directly connected to
the Type−Ct receptacle, J1, and the VBUS test point
located near J1. As a host/DFP port, VBUS can be supplied
to the receptacle, J1, and controlled by the FUSB303 device.
When connected to a PC, VBUS is supplied from the
micro−B USB connection. The FUSB303 controls an
on−board load switch, the FPF2411 or U2, for enabling of
VBUS to the Type−Ct receptacle, J1.
Communication with the FUSB303, when in I2C mode, is
done through I2C accesses. The evaluation board allows for
different ways of connecting I2C masters to the FUSB303.
Direct I2C Connection
Customers that want to directly control their I2C masters
to the evaluation board can connect the I2C master signals
to the SCL, SDA, and INT_N test points. The evaluation
board has 10kΩ pull−ups to VDD, which is 3.3V, on each of
these signals.
VCONN
VCONN is not supplied nor managed on the evaluation
board.
PC I2C Connection
The evaluation board uses a PIC32MX250F128
microcontroller as an I2C master to control the FUSB303
when it is configured as an I2C slave. This is the
communication method used by the FUSB303 GUI. By
connecting the PC to the micro−B USB receptacle, J2, the
evaluation board automatically powers the microcontroller
and connects the I2C master to the FUSB303.
USB2.0 and SBU
The USB2.0 and SBU signals are left open in the
Type−Ct connector and no connections on the board.
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FUSB303EVBUM
Table 1. STATUS LEDS
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LED ID
LED Name
D1
PWR
VDD is supplied to FUSB303 and microcontroller
Description
D5
DFP
FUSB303 is Source Port role
Table 2. CONFIGURATION JUMPERS
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Jumper ID
Jumper Name
JP1
VBUS_MC
Description
Connects VBUS to FPF2411 load switch
JP2
BYPASS
JP3
VDD/V3P3
Bypasses the FPF2411 load switch
JP4 (Note 1)
EN_N
JP5 (Note 1)
PRT/DBG_N
Configures the FUSB303 PORT/DEBUG_N input
When JP6 = HI or LO (I2C mode)
• PRT/DBG_N is ignored
When JP6 = float (GPIO mode)
• Float = port type is DRP
• HI = port type is SRC only
• LO = port type is SNK only
JP6 (Note 1)
ADDR/ORNT
Configures the FUSB303 ADDR/ORIENT input
When JP6 = HI or LO (I2C mode)
• LO = I2C 7−bit address is 21h (42h >> 1)
• HI = I2C 7−bit address is 31h (62 >> 1)
When JP6 = float (GPIO mode)
• GPIO mode; no I2C access
Connects V3P3 supply to VDD rail (for FUSB303 VDD, I2C pull−ups, and GPIO pull−ups)
Configures FUSB303 EN_N Input
when JP6 = HI or LO (I2C mode)
• EN_N must be LO
when JP6 = float (GPIO mode)
• Float or HI = FUSB303 disabled
• LO = FUSB303 enabled
1. Refer to FUSB303 datasheet for more details on these signals
Figure 2. FUSB303 Evaluation Board FM170403A Schematic (1/2)
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FUSB303EVBUM
Figure 3. FUSB303 Evaluation Board FM170403A Schematic (2/2)
Device status
I2C Scan function
Tabs for device
control
USB connect
status
Device Connect status
Figure 4. FUSB303 GUI Layout
GUI Installation
USB port of your PC. Plug the micro−B end of the USB
cable into the GUI interface, J2, on the evaluation board.
The “PWR” LED will illuminate if properly connected.
Wait for the USB port to connect with a message in the lower
left hand corner of the GUI that states “USB Device: VID:
0x0779 PID: 0x1118” highlighted in green. If the message
background remains red and states “Disconnected”, then
there is a connection problem.
The FUSB303 GUI requires no special installation
procedure. After requesting and receiving the download
link for the GUI, download the archived GUI. Then extract
the GUI file to an installation location on the PC.
GUI Startup
Double−click on the FUSB303 GUI executable to run the
program. Plug the STD−A end of the USB cable into the
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FUSB303EVBUM
Automatic FUSB303 EVB I2C Address Detection
Register Map Tab
Before connecting the FUSB303 EVB to the GUI, the
GUI will display a message in the lower right hand corner
that states “No Device” highlighted in red. When the
FUSB303 EVB is connected to the PC, the GUI will scan the
FUSB303 EVB for its I2C address. Then the GUI will
change the message in the lower right hand corner to state
“Device Connected: v1.0.0” highlighted in green (possibly
a different version number if the EVB firmware gets updated
in the future). If the EVB is not detected, try clicking the
“Scan I2C” button in the top, middle of the GUI (Figure 4)
to see if this resolves the I2C address and connects.
This tab allows you to read or write any value to any
register in the FUSB303. When performing a register write,
the selected register/registers is/are read back again to
confirm the write action. So the write button actually
performs a write then read function.
Script Tab
This tab enables the use of scripts to configure the
FUSB303. Scripts can be added through the GUI using the
editing window on the left of the tab. This edit window
allows for normal copying and pasting to or from any text
file if you want to save or copy your scripts from external
files. Each line of the script should be formatted as follows:
Command, port, I 2C addr, # bytes, register addr, data1,
…, dataN, optional comment
The Command is: “r” or “w”
The port is always 0
The I 2C addr is either 0x42, 0x4A, 0x62, or 0x6A
The # bytes is the number of bytes to read or write
The register addr is the starting register address
The data1 through dataN are for writing values to
registers
And optional comment is just informational
Each field can be separated with a space (“ ”), a comma
(“,”), or a semicolon (“;”).
An example of reading from 3 consecutive registers:
r 0 0x42 3 0x04 ; read 3 bytes starting at CONTROL
(register address 0x04)
An example of writing to 2 consecutive registers:
w 0 0x42 2 0x0E 0x22 0x55 ; write 2 bytes starting at
MASK (register address 0x0E)
The Execute button will run all the lines of the script.
The Step button will execute the highlighted line.
The Loop feature will loop the entire script up to 99 times.
Setting Loop count to 0 will loop indefinitely.
Results of the executed script are shown in the box on the
right side of the tab. These results can be copied and pasted
to an external file.
GUI Dropdown Menus
• File
♦
Click “Exit” to quit
• Preferences
Click “Auto Poll” to have the GUI constantly poll
the FUSB302 EVB status
Help
♦ Click “About” to see the version of the GUI
♦
•
FUSB303 EVB Status
When in “Auto Poll” mode, the FUSB303 GUI will
constantly poll the FUSB303 EVB for various status and
information. This information is displayed in the Type−C
Status, Device ID, Status, and Interrupt sections across the
top of the GUI.
General USB Tab
This tab allows you to read the current configuration of the
FUSB303 with the Read Config button. It also allows you
to change the configuration of the FUSB303 with the Write
Config button. And the I2C Reset button allows you to reset
the FUSB303 to its default configuration. Each section of
the General tab correlates to a register of the FUSB303 and
is described in the Register Definitions section of the
FUSB303 datasheet.
Table 3. REVISION HISTORY
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Rev.
Date
1.0
October 2017
Description
Initial release
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