Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
4
DPSLP_REG_DIS
RW
A
0
Explicity disable the DeepSleep regulator, including
circuits shared with the Active Regulator. This register
must not be set except as part of a Cypress-provided
sequence or API, such as the PMIC case described
below. This register is only reset by XRES,
HIBERNATE wakeup, or supply supervision reset. If
the DeepSleep regulator is disabled, it is not supported
to enable it again later by clearing this bit.
0: DeepSleep Regulator is not explicitly disabled. This
is the normal setting, and hardware automatically
controls the DeepSleep regulator for most sequences,
including for HIBERNATE and XRES low power
modes. This setting must be used if the Active Linear
Regulator is used, because some circuitry is shared.
1: DeepSleep Regulator is explicitly disabled. Only use
this for special cases when another source supplies
vccdpslp during DEEPSLEEP mode and there is no
future intention to use the Active Regulator for
ACTIVE/SLEEP modes. For example, this setting is
used as part of a Cypress-provided handover
sequence to a PMIC that operates in ACTIVE, SLEEP,
and DEEPSLEEP and disables both the Active Linear
Regulator and DeepSleep Regulator.
8
RET_REG_DIS
RW
A
0
Explicitly disable the Retention regulator. This register
is only reset by XRES, HIBERNATE wakeup, or supply
supervision reset.
0: Retention Regulator is not explicitly disabled.
Hardware disables it automatically for internal
sequences, including for HIBERNATE and XRES low
power modes. Hardware keeps the Retention
Regulator enabled during ACTIVE/SLEEP modes, so it
is ready to enter DEEPSLEEP at any time.
1: Retention Regulator is explicitly disabled. Only use
this for special cases when another source supplies
vccret during DEEPSLEEP mode. This setting is only
legal when another source supplies vccret, but there is
no special hardware protection for this case.
12
NWELL_REG_DIS
RW
A
0
Explicitly disable the Nwell regulator. This register is
only reset by XRES, HIBERNATE wakeup, or supply
supervision reset.
0: Nwell Regulator is on. Hardware disables it
automatically for internal sequences, including for
HIBERNATE and XRES low power modes. Hardware
keeps the Nwell Regulator enabled during
ACTIVE/SLEEP modes, so it is ready to enter
DEEPSLEEP at any time.
1: Nwell Regulator is explicitly disabled. Only use this
for special cases when another source supplies vnwell
during DEEPSLEEP mode. This setting is only legal
when another source supplies vnwell, but there is no
special hardware protection for this case.
16
REFV_DIS
RW
A
0
Disables the voltage reference.
PSoC products: This disables the Active voltage
reference. Firmware must ensure that
LPM_READY==1 and BGREF_LPMODE==1 for at
least 1us before disabling the Active Reference. When
enabling the Active Reference, use REFV_OK
indicator to know when it is ready. This register is only
reset by XRES, HIBERNATE wakeup, or supply
supervision reset.
Traveo II products: Reserved. Write zero.
1644
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers