Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
17
REFV_OK
R
RW
0
Indicates that the normal mode of the voltage
reference is ready.
20
REFVBUF_DIS
RW
A
0
Disable the voltage reference buffer. Firmware should
only disable the buffer when there is no connected
circuit that is using it. SRSS circuits that require it are
the PLL and ECO. A particular product may have
circuits outside the SRSS that use the buffer. This
register is only reset by XRES, HIBERNATE wakeup,
or supply supervision reset.
21
REFVBUF_OK
R
RW
0
Indicates that the voltage reference buffer is ready.
Due to synchronization delays, it may take two IMO
clock cycles for hardware to clear this bit after
asserting REFVBUF_DIS=1.
22
REFVBUF_LPMODE
RW
A
0
Control the power mode of the 800mV voltage
reference buffer. The value in this register is ignored
and normal mode is used until LPM_READY==1.
0: Voltage Reference Buffer operates in normal mode.
They work for vddd ramp rates of 100mV/us or less.
This register is only reset by XRES, HIBERNATE
wakeup, or supply supervision reset.
1: Voltage Reference Buffer operates in low power
mode. Power supply rejection is reduced to save
current, and they work for vddd ramp rates of 10mV/us
or less.
24
REFI_DIS
RW
A
0
Reserved. Write zero.
25
REFI_OK
R
RW
0
Indicates that the current reference is ready. Due to
synchronization delays, it may take two IMO clock
cycles for hardware to clear this bit after asserting
REFI_DIS=1.
26
REFI_LPMODE
RW
A
0
Control the power mode of the reference current
generator. The value in this register is ignored and
normal mode is used until LPM_READY==1. This
register is only reset by XRES, HIBERNATE wakeup,
or supply supervision reset.
0: Current reference generator operates in normal
mode. It works for vddd ramp rates of 100mV/us or
less.
1: Current reference generator operates in low power
mode. Response time is reduced to save current, and
it works for vddd ramp rates of 10mV/us or less.
27
PORBOD_LPMODE
RW
A
0
Control the power mode of the POR/BOD circuits. The
value in this register is ignored and normal mode is
used until LPM_READY==1. This register is only reset
by XRES, HIBERNATE wakeup, or supply supervision
reset.
0: POR/BOD circuits operate in normal mode. They
work for vddd ramp rates of 100mV/us or less.
1: POR/BOD circuits operate in low power mode.
Response time is reduced to save current, and they
work for vddd ramp rates of 10mV/us or less.
28
BGREF_LPMODE
RW
A
0
Control the circuit-level power mode of the Bandgap
Reference circuits.
0: Bandgap Reference circuits operate in higher
current mode.
1: Bandgap Reference circuits operate in low power.
Refer to documentation for restrictions.
1645
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers