Reset Source; Table 2. 25 Mhz Crystal X1 Related Solder Bridges; Table 3. 32Khz Crystal X2 Related Solder Bridges - ST User Manual User Manual

Hardware layout and configuration
Jumper
SB27
SB28
T
Solder
Bridge
SB25
SB26
Note: About the jumper JP6 for Ethernet clock, refer to
5.4

Reset source

The reset signal of STM32746G-EVAL evaluation board is low active and the reset sources
include:
•
Reset button B1
•
Debugging Tools from JTAG/SWD connector CN15 and ETM trace connector CN12
•
Daughterboard from CN5
•
Embedded ST-LINK/V2-1
• RS232 connector CN7 for ISP
Note: The jumper JP3 has to be closed for RESET handled by the pin 8 of the RS232 connector
CN7 (CTS signal).
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Table 2. 25 MHz Crystal X1 related solder bridges

PH0 is connected to 25 MHz crystal when SB27 is open.
(Default setting)
PH0 is connected to extension connector CN5 when SB27 is closed. In such case
R19 must be removed to avoid disturbance due to the 25 MHz quartz.
PH1 is connected to 25MHz crystal when SB28 is open.
(Default setting)
PH1 is connected to extension connector CN5 when SB28 is closed. In such case
C23 and X1 must be removed to avoid disturbance due to the 25 MHz quartz.

Table 3. 32KHz Crystal X2 related solder bridges

PC14 is connected to 32 KHz crystal when SB25 is open.
(Default setting)
PC14 is connected to extension connector CN6 when SB25 is closed. In such case
R18 must be removed to avoid disturbance due to the 32 Khz quartz.
PC15 is connected to 32 KHz crystal when SB26 is open.
(Default setting)
PC15 is connected to extension connector CN6 when SB26 is closed. In such case
R17 must be removed to avoid disturbance due to the 32 Khz quartz.
DocID027916 Rev 2
Description
Description
Section 5.13: Ethernet.
UM1902