Register Description; Emu_Ctrl - Control Register - Silicon Laboratories EFR32xG14 Wireless Gecko Reference Manual

10.5 Register Description

10.5.1 EMU_CTRL - Control Register

Offset
0x000
Reset
Access
Name
Bit Name
31:18 Reserved
17:16 EM4HVSCALE
Set EM4H voltage. Entry to EM4H will trigger voltage scaling to this voltage if voltage scale level in EM4HVSCALE is less
than that of VSCALE
Value
0
2
3
15:10 Reserved
9:8 EM23VSCALE
Set EM23 voltage. Entry to EM2/3 will trigger voltage scaling to this voltage if voltage scale level in EM23VSCALE is lesser
than that of VSCALE
Value
0
2
3
7:5 Reserved
4 EM23VSCALEAU-
TOWSEN
With voltage scaling on EM2/3 entry, wakeup to EM0/1 will be at the same voltage as EM2. When this bit is set the RAM,
Flash wait states, and CMU clock frequency are automatically configured to safe value without needing software to config-
ure it prior to EM2/3 entry.
silabs.com | Building a more connected world.
Reset Access Description
To ensure compatibility with future devices, always write bits to 0. More information in
tions
0x0 RW EM4H Voltage Scale
Mode Description
VSCALE2 Voltage Scale Level 2
VSCALE0 Voltage Scale Level 0
RESV RESV
To ensure compatibility with future devices, always write bits to 0. More information in
tions
0x0 RW EM23 Voltage Scale
Mode Description
VSCALE2 Voltage Scale Level 2
VSCALE0 Voltage Scale Level 0
RESV RESV
To ensure compatibility with future devices, always write bits to 0. More information in
tions
0 RW Automatically Configures Flash, Ram and Frequency to Wakeup
From EM2 or EM3 at Low Voltage
Bit Position
Reference Manual
EMU - Energy Management Unit
1.2 Conven-
1.2 Conven-
1.2 Conven-
Rev. 1.1 | 238