Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
2
SLEEP
RW1S
RW1C
0
SW sets this field to '1' to direct HW to sleep mode.
HW transits from Normal to Sleep upon SLEEP=1 and
both TX and RX is idle. HW sets this field to '0' when it
is in Sleep mode.
Note that, SW needs to manage the entry to sleep
mode by checking the conditions are met before
initiating sleep mode e.g. all slave nodes supports
sleep and on transmitting sleep frames to indicate
sleep to all slave nodes.SW shall not program
SLEEP=1 when HW is executing
TX_WAKEUP_PULSE command. If SW programs
SLEEP=1 during HW executing TX_WAKEUP_PULSE
command, it will cause HW to abruptly stop
transmitting wakeup pulse as below:
1. HW not clearing TX_WAKEUP_PULSE
2. HW not setting TX_WAKEUP_DONE
3. HW outputting TX_OUT=0.
3
WAKE_TO_STANDBY
RW
RW1C
0
SW sets this field to '1' to direct HW to wake up from
Sleep mode to Standby mode. SW clears this field to
'0' from '1' when it wants to direct HW from Standby to
Normal mode. HW clears this field to '0' when it is in
Normal mode or back to Sleep mode from Standby
mode.
For the case of CXPI master mode, HW will move its
power mode from Sleep->Standby when this field is
set to '1'. When SW clears this field is from '1' to '0' in
Standby mode, HW will move to Normal mode while
HW starts transmitting clock. To transmit wake pulse,
SW need to program TX_WAKE_PULSE accordingly
in Standby mode before entering Normal.
For the case of CXPI slave mode and PWM mode, HW
will move power mode from Sleep->Standby when this
field is set to '1'. HW will wait for detection of clock
before moving from Standby->Normal. SW clearing
this field to '0' will have no effect.
For the case of CXPI slave mode and NRZ mode, HW
will move power mode from Sleep->Standby when this
field is set to '1'. HW needs to be directed by SW by
clearing this field to '0' to move from Standby->Normal
after SW has detected clock through another IP (e.g.
MXTCPWM).
4
TX_WAKE_PULSE
RW
RW1C
0
SW sets this field to '1' to direct HW to send wake up
pulse. HW will transmit wake up pulse in Standby state
only. HW will ignore this field when it's not in Standby
state.
'1' - HW will drive CXPI bus to low for period dictated
by T_WAKEUP_LENGTH.
'0:'- No wake up pulse
HW clears this field to '0' after it transmit the pulse per
T_WAKEUP_LENGTH.
For the case where more than 1 wake pulses are
required, SW is expected to set this field to '1' again
(after this field is cleared to '0') per the number of times
the wake pulse is required.
777
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers