L6460 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6460' PDF : 139 Pages View PDF
Start-up configurations
L6460
Table 9.
GPIO[0]
Start-up correspondence
Pin state(1)
GPIO[3] GPIO[4]
Major mode
Minor mode(2)
Z
X
X
Basic
0
0
0
0
0
Z
0
0
1
Single
0
Z
0
0
Z
Z
0
Z
1
0
1
0
0
1
Z
0
1
1
Master
1
0
0
1
0
Z
1
0
1
1
Z
0
1
Z
Z
1
Z
1
Slave
1
1
0
1
1
Z
1
1
1
Bridge
Primary regulator
Regulators
Simple regulator
Bridge + VEXT (3)
Secondary regulators
Bridge
Primary regulator
Regulators
Simple regulator
Bridge + VEXT (3)
Secondary regulators
Bridge
Primary regulator
Regulators
Simple regulator
Bridge + VEXT (3)
Secondary regulators.
1. “X” means “don’t care”.
2. The description of these modes is in the following Chapter 8.6
3. VEXT is the regulator output voltage obtained using the switching regulator controller with external FET.
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.
When in this mode the regulators included in the start up sequence (except VSWmain) are
considered as system regulators and they start in the following sequence:
1. Auxiliary switching regulator1 (VAUX1_SW).
2. Auxiliary switching regulator2 (VAUX2_SW).
3. Main linear regulator (VSWmain).
4. Main switching regulator (VSWmain) (Not system regulator).
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Doc ID 17713 Rev 1
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