I/O
Hardware
Setting
Configuration
PA12
R140
ON
PA12 connected in parallel to extension connector CN9
USB interface can be disturbed.
1. The default configuration is in bold.
7.13.4
UCPD
USB Type-C
®
introduces the USB Power Delivery feature. STM32U575I-EV Evaluation board supports the dead
battery, the SINK mode, and the SOURCE mode. The fast role swap (FRS) is optional.
In addition to the DP/DM I/Os directly connected to the USB Type-C
®
connector, some I/Os are also
used for UCPD configuration: Configuration Channel (CCx), VBUS-SENSE, IBUS_SENSE, I
2
C interface, and
UCPD_FAULT (FLT) feature.
To protect STM32U575I-EV from USB over-voltage, a USB Type-C
®
PPS-compliant port protection IC is used,
compliant with IEC6100-4-2 level 4.
•
Configuration Channel I/O: UCPD_CCx: These signals are connected to the associated CCx line of the
USB Type-C
®
connector through the TCPP03-M20 STM USB port protection. These lines are used for the
configuration channel lines (CCx) to select the USB Type-C
®
current mode. STM32U575I-EV supports SINK
and source current modes.
•
Dead Battery: UCPD_DBn: The Dead Battery function and its associated resistors links to the UCPD feature
are managed internally by the port protection. No I/O or external resistors are necessary for this function.
•
V
BUS
fault detection: UCPD_FLT: This signal is provided by the STM USB port protection. It is used as fault
reporting to MCU after a bad V
BUS
level detection. By design, the STM32U575I-EV V
BUS
protection is set by
RSENSE to 6 V maximum.
•
The port protection component is driven by an I
2
C bus. The base I
2
C-bus address is
0x68
(
0b0110100x
).
describes the hardware configuration for the UCPD interface.
Table 25.
Hardware I/O configuration for the UCPD feature
I/O
Hardware
Setting
Configuration
PA15
SB19
ON
PA15 is used as UCPD_CC1 and connected to the USB Type-C
®
port
protection and cannot be used as JTAG.
OFF
PA15 is not connected to the USB Type-C
®
port protection and can be used
for JTAG (T_JTDI)
PB15
SB52
ON
PB15 is used as UCPD_CC2 and connected to the USB Type-C
®
port
protection and cannot be used as UCPD_CC2.
OFF
PB15 is not connected to the USB Type-C
®
port protection.
No other muxing
PA5
SB75
ON
PA5 is used as VBUS_SENSE.
OFF
PA5 is not used for UCPD and can be used on STMod+.
PB8
JP14
ON
IO UCPD_FLT is connected to the USB Type-C
®
port protection and used
as overvoltage fault reporting to MCU.
OFF
PB8 is not used for UCPD_FLT and can be used as FDCAN or to external
MEMS
PA0
SB72
ON
ADC on PA0 is used for IBUS_SENSE.
OFF
PA0 is not used for IBUS_SENSE and can be used for OPAMP, STMod+, or
motor control.
PG8
SB11
ON
Port protection supplied by PG8 I/O
OFF
Port protection supplied by VDD through SB10
PB10
SB46
ON
PB10 is used as I2C_SCL to interface the port protection and is
shared with MFX, touch panel, Ext_I2C, EEPROM, 3D accelerometer, 3D
gyroscope, camera, and STMod+.
STM32U575I-EV
USB Type-C® FS port
UM2854
-
Rev 1
page 40/105