Getting to Know the Hardware
KT34FS6407-34FS6408UG User’s Guide Rev. 1.0 8/2015
20
Freescale Semiconductor, Inc.
4.9
Switch Definitions
Table 9. Switches
Switch Number
Position
Function
Description
SW1
Power supply select
1-2
Supply from J7 selected
2-3
Power jack on J3 selected
SW2
V
CCA
/V
AUX
switch
Only one choice is possible at the same time
1
3.3 V / 3.3 V
2
5.0 V / 5.0 V
3
3.3 V / 5.0 V
This setting is not allowed if V
AUX
is not used - option
V
CCA
only (selected by J19)
4
5.0 V / 3.3 V
SW3
LEDs - indicators for power supplies
1
V
PRE
Enables LED indicator for pre-regulator
2
V
AUX
Enables LED indicator for auxiliary power supply
3
V
CCA
Enables LED indicator for V
CCA
regulator
4
CAN_5 V
Enables LED indicator for CAN regulator
SW4
Ignition switch
1-2
IO_0 connected to V
BAT
(ignition key active)
2-3
No voltage on the IO_0