Hardware layout and configuration
UM2198
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DocID030511 Rev 1
The LED LD9 lights up when the STM32H743I-EVAL Evaluation board is powered by the
5 V correctly.
Note:
To avoid the impact of USB PHY, Ethernet PHY and get precise results about current
consumption on JP9, take into account the following cautions:
1) Remove JP5 to avoid Ethernet PHY influence
2) Configure USB HS PHY into low-power mode (Register Address=04, bit 6 in USB PHY)
8.5 Clock
source
Two clock sources (X1 and X2) are available on the STM32H743I-EVAL Evaluation board
for the STM32H743XI and RTC embedded. Other clock sources (X3 and X4) are used for
their peripherals:
•
X1, 25-MHz crystal for STM32H743XI, it can be disconnected by removing R15 and
R16 when internal RC clock is used
•
X2, 32-KHz crystal for embedded RTC
•
X3, 25-MHz crystal for Ethernet PHY
•
X4, 24-MHz crystal for USB OTG2 HS PHY
JP10
To supply the STM32H743I-EVAL board through the USB OTG2 HS (CN14), set
JP10 as shown to the right:
To supply the STM32H743I-EVAL board and the daughterboard connected on CN6
and CN7 through the
power supply jack
(CN10), set JP10 as shown to the right
(
daughterboard must not have its power supply connected
)
JP11
V
BAT
is connected to +3.3 V when JP11 is set as shown to the right: (Default setting)
V
BAT
is connected to the battery when JP11 is set as shown to the right:
Table 3. Power related jumpers (continued)
Jumper
Description
+6
)6
)6
'9
368
67ON
069
+6
)6
)6
'9
368
67ON
069
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