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 connectionconfiguration:
•
1-2: EXTAL connected to 40 MHz cristal clock source
•
2-3: EXTAL connected to EXTAL EVB clock source
1-2 (XT1
pin2)
Figure 10. Overview of
SPC570SADPT100S mini module - top
B2
J15
XTAL connectionconfiguration:
•
1-2: XTAL connected to 40 MHz cristal clock source
•
2-3: XTAL connected to XTAL EVB clock source
1-2 (XT1
pin1)
Figure 10. Overview of
SPC570SADPT100S mini module - top
B2
J17
8 MHz oscillator enable jumper:
•
Open: 8 MHz oscillator not enabled
•
Closed: 8 MHz oscillator enabled
Open
Figure 10. Overview of
SPC570SADPT100S mini module - top
C1
J19
External clock source jumper selector:
•
1-2: from 8 MHz oscillator
•
2-3: from SMA connector
1-2
Figure 10. Overview of
SPC570SADPT100S mini module - top
B2
UM2868
System clock configuration
UM2868
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Rev 1
page 9/30
