Datasheet

192
42023E–SAM–07/2013
ATSAM4L8/L4/L2
12.7.17 Bandgap Status Register
Name: BGSR
Access Type: Read Only
Reset Value: 0x00000000
• VREF: Voltage Reference Used by the System
0: Both the Bandgap voltage reference and the Low Power Bandgap voltage reference are currently used by the system.
1: The Bandgap voltage reference is currently used by the system.
2: The Low Power Bandgap voltage reference is currently used by the system.
3: Neither the Bandgap voltage reference nor the Low Power Bandgap voltage reference are used by the system.
• LPBGRDY: Low Power Bandgap Voltage Reference Ready
0: The Low Power Bandgap voltage reference is not ready, therefore all modules using it as a source will not be able to operate
correctly.
1: The Low Power Bandgap voltage reference is ready.
• BGRDY: Bandgap Voltage Reference Ready
0: The Bandgap voltage reference is not ready, therefore all modules using it as a source will not be able to operate correctly.
1: The Bandgap voltage reference is ready.
• BGBUFRDY: Bandgap Buffer Ready
0: The corresponding Bandgap Buffer is not ready, therefore all modules using it as a source will not be able to operate correctly.
1: The corresponding Bandgap Buffer is ready. Refer to the “Bandgap Buffer Mapping” table in the SCIF Module Configuration
section for details.
31 30 29 28 27 26 25 24
--------
23 22 21 20 19 18 17 16
- - - - VREF LPBGRDY BGRDY
15 14 13 12 11 10 9 8
--------
76543210
BGBUFRDY[7:0]