Hardware layout and configuration UM2407
32/48 UM2407 Rev 1
SB75
(PA0)
ON PA0 is connected to ST Zio connector (Pin 29 of CN10).
OFF PA0 is not connected to ST Zio connector (Pin 29 of CN10).
RMII Signals
SB57 (PA1), SB64
(PC1),
SB72 (PA2), SB36
(PC4),
SB29 (PC5), SB30
(PG13), SB27 (PG11),
SB31 (PA7), JP6
(PB13)
ON
These pins are used as RMII signals and connected to
Ethernet PHY.
(SB7 must be removed)
These pins must not be used on ST morpho or ST Zio
connectors.
OFF
These pins can be used as GPIOs on ST morpho connectors.
PB13 can be used as I2S_A_CK on ST Zio (Pin 5 of CN7) if
not used on ST morpho.
SB74 (Ethernet nRST)
RMII Signal
ON NRST of STM32H7 is connected to Ethernet PHY (U15).
OFF NRST of STM32H7 is not connected to Ethernet PHY (U15).
SB76 (PG7)
ON USB overcurrent alarm is connected.
OFF
USB overcurrent alarm is not connected. PG7 is used as
GPIO on ST morpho connector (CN12).
SB77 (PD10)
ON
PD10 is connected to Enable for Power switch (U18) to
control V
BUS
.
OFF PD10 is used as GPIO on ST morpho connector (CN12).
SB23 (PA9)
ON PA9 is connected to USB V
BUS
.
OFF
PA9 is not connected to USB V
BUS
.
PA9 is used as GPIO on ST morpho connector (CN12).
SB24 (PA10)
ON PA10 is connected to USB ID.
OFF
PA10 is not connected to USB ID.
PA10 is used as GPIO on ST morpho connector (CN12).
SB21 (PA11), SB22
(PA12)
ON
These pins are used as D- and D+ on USB connector CN13.
(SB16 and SB17 must be OFF).
OFF These pins are used as GPIOs on ST morpho connectors.
SB13
ON VDD33_USB_1 is connected to 3V3_VDD.
OFF VDD33_USB_1 is not supplied.
SB25
ON VDD_MMC_1 is connected to VDD_MCU.
OFF VDD_MMC_1 is not supplied.
SB59 (PG6)
ON PG6 is connected to QSPI_CS (SB61 must be OFF).
OFF PG6 is used as GPIO on ST morpho connector (CN12).
SB63 (PB2)
ON PB2 is connected to QSPI_CLK. (SB69 must be OFF)
OFF
PB2 is not connected to QSPI_CLK and can be used as
COMP1_INP (SB69 ON) or used as GPIO on ST morpho
connector CN12. (SB69 OFF)
Table 14. Solder bridge and jumper configuration (continued)
Bridge State
(1)
Description
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