STMicroelectronics FlexSPIN: SPI configurable stepper and DC multi motor driver evaluation board EVAL6460 EVAL6460 Fiche De Données
Codes de produits
EVAL6460
Start-up configurations
L6460
40/139
Doc ID 17713 Rev 1
8.2
Basic device mode
The basic device mode is selected by leaving the GPIO[0] pin floating. In this mode L6460
doesn’t use GPIO[3] and GPIO[4] as configuration pins, leaving them free for other uses.
doesn’t use GPIO[3] and GPIO[4] as configuration pins, leaving them free for other uses.
When in this mode the regulators included in the start up sequence (except V
SWmain
) are
considered as system regulators and they start in the following sequence:
1.
Auxiliary switching regulator1 (V
AUX1_SW
).
2.
Auxiliary switching regulator2 (V
AUX2_SW
).
3.
Main linear regulator (V
SWmain
).
4. Main
switching regulator (V
SWmain
) (Not system regulator).
Table 9.
Start-up correspondence
Pin state
(1)
1.
“X” means “don’t care”.
Major mode
Minor mode
(2)
2.
The description of these modes is in the following
GPIO[0]
GPIO[3]
GPIO[4]
Z
X
X
Basic
0
0
0
Single
Bridge
0
0
Z
Primary regulator
0
0
1
Regulators
0
Z
0
Simple regulator
0
Z
Z
Bridge + VEXT
(3)
3.
VEXT is the regulator output voltage obtained using the switching regulator controller with external FET.
0
Z
1
Secondary regulators
0
1
0
Master
Bridge
0
1
Z
Primary regulator
0
1
1
Regulators
1
0
0
Simple regulator
1
0
Z
Bridge + VEXT
1
0
1
Secondary regulators
1
Z
0
Slave
Bridge
1
Z
Z
Primary regulator
1
Z
1
Regulators
1
1
0
Simple regulator
1
1
Z
Bridge + VEXT
1
1
1
Secondary regulators.