Datasheet

DocID023278 Rev 4 55/75
L6480 Programming manual
75
The OSC_SEL and EXT_CLK bits set the system clock source:
The SW_MODE bit sets the external switch to act as HardStop interrupt or not:
Table 32. Oscillator management
EXT_CLK OSC_SEL[2…0] Clock source OSCIN OSCOUT
0 000
Internal oscillator: 16 MHz Unused Unused
0 001
0 010
0 011
1 0 0 0 Internal oscillator: 16 MHz Unused
Supplies a 2-MHz
clock
1 0 0 1 Internal oscillator: 16 MHz Unused
Supplies a 4-MHz
clock
1 0 1 0 Internal oscillator: 16 MHz Unused
Supplies an 8-MHz
clock
1 0 1 1 Internal oscillator: 16 MHz Unused
Supplies a 16-MHz
clock
0 100
External crystal or resonator:
8 MHz
Crystal/resonator
driving
Crystal/resonator
driving
0 101
External crystal or resonator:
16 MHz
Crystal/resonator
driving
Crystal/resonator
driving
0 110
External crystal or resonator:
24 MHz
Crystal/resonator
driving
Crystal/resonator
driving
0 111
External crystal or resonator:
32 MHz
Crystal/resonator
driving
Crystal/resonator
driving
1 100
Ext. clock source: 8 MHz
(crystal/resonator driver
disabled)
Clock source
Supplies inverted
OSCIN signal
1 101
Ext. clock source: 16 MHz
(crystal/resonator driver
disabled)
Clock source
Supplies inverted
OSCIN signal
1 110
Ext. clock source: 24 MHz
(crystal/resonator driver
disabled)
Clock source
Supplies inverted
OSCIN signal
1 111
Ext. clock source: 32 MHz
(crystal/resonator driver
disabled)
Clock source
Supplies inverted
OSCIN signal
Table 33. External switch hard stop interrupt mode
SW_MODE Switch mode
0 HardStop interrupt
1 User disposal