ST SPC572LADPT100S, Руководство пользователя

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Jumper Description Default Position
• Closed: PA[7] connected to QSH
JP12
PA[8] connection to QSH connectors configuration:
•
Open: PA[8] not connected to QSH connectors (motherboard)
• Closed: PA[8] connected to QSH
Open B2
(1)
1. Refer to the Figure 10. SPC572LADPT100S mini module - top
2. Refer to the Figure 11. SPC572LADPT100S mini module - bottom
5.3 System clock configuration
The mini module supports the usage of crystal clock sources as well as external clock source:
Table 3. System clock related jumpers
Jumper Description Default Position
J13
EXTAL connection configuration:
•
1-2: EXTAL connected to 40 MHz crystal clock source
• 2-3: EXTAL connected to EXTAL EVB clock source
1-2 (XT1 pin2)
C3
(1)
J15
XTAL connection configuration:
•
1-2: XTAL connected to 40 MHz crystal clock source
• 2-3: XTAL connected to XTAL EVB clock source
1-2 (XT1 pin1)
C3
(1)
J17
8 MHz oscillator enable jumper:
•
Open: 8 MHz oscillator not enabled
• Closed: 8 MHz oscillator enabled
Open
D3
(1)
J19
Jumper selector of external clock source:
•
1-2: from 8 MHz oscillator
• 2-3: from SMA connector
1-2 C3
(1)
1. Refer to the Figure 10. SPC572LADPT100S mini module - top
UM3063
System clock configuration
UM3063 - Rev 1
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