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TPS658620ZQZT датащи(PDF) 46 Page - Texas Instruments

номер детали TPS658620ZQZT
подробное описание детали  Advanced Power Management Unit
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

TPS658620ZQZT датащи(HTML) 46 Page - Texas Instruments

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3.42 TPS658620 OPERATING MODES
3.43 STATE MACHINE DIAGRAM
SLEEP STATE
nNOPOWER=LO
SUPPLIESOFF
RTCREGISTERSRESET IFRTC_OUT <
V
EEPROM-LOADABLEREGISTERS
NOT RESET,KEEP VALUES
ALL OTHERREGISTERSRESET TODEFAULT
NOI2CCOMMUNICATION
UVLO_RTC
ALL
SUPPLIES
OFF
TPS6586X
INUVLO
MODE
ANY
STATE
V(AC)>V
OR
V(USB)>V
OR
V(BAT)>V
UVLO
UVLO
UVLO
V(2V2)<V
UVLO
NOPOWER
V(SYS)>V
ANDt>T
LOWSYS
POR
POWERGOODCHECK
(B)
FORCERTC_OUT LDOON
NOPGOODFAULT
REBOOT SET VIA I2COR
nHOTRST PINLOPULSE
DETECTED
RTC
(B)
ALL SUPPLIESOFF
FORCERTC_OUT LDOOFF
NNOPOWER=LO
RESET/START T
TIMER
CHECK
HARDREBOOT
ALL SYNCSUPPLIESOFF
nNOPOWER=LO
RESET/START T
TIMER
WAIT
[RESUMEPINHIDETECTED ]OR
[PGOODFAULT ANDNORMAL MODESET]OR
SLEEP MODESET VIA I2C
OR
[HOTPLUG TIMEREXPIRED AND
V(SYS)<
V
FOR5mSEC AND
SLEEP BY LOWSYS
ENABLEDVIA I2C]
LOW_SYS
t> T
WAIT1
SUPPLY
SEQUENCING
COMPLETE
AND
SUPPLYSEQ
(B)
FORCERTC_OUT LDOON
RTCREGISTERSNOT RESET,KEEP VALUES
ALL OTHERREGISTERSRESET TODEFAULT
RESET/START TIMERS: T
, T
, T
EXECUTESUPPLY SEQUENCING
RESET/START TIMER T
WHEN
NORTC
HOTPLUG
BOOT
SYNCEND
t>T
WAIT
NO THERMAL FAULT
AND
SLEEP EXIT SET VIA I2C
V(RTC_OUT)>V
OR
t> T
RTCLOW
MAX
POWERUP
(B)
ALL REGISTERSRESET TO
DEFAULT
ENABLEPOWERPATH
OPERATION
nNOPOWER=LO
t> T
-
WAIT
T
WAIT1
nNOPOWER=LO
BOOT TIMEREXPIRES
OR
[HOTPLUG TIMEREXPIRES AND
V(SYS)<V
FOR5mSEC AND
SLEEP BY LOWSYSENABLED]
LOW_SYS
THERMAL FAULT
ANY
STATE
RTC_ON
(B)
ALL SUPPLIESOFF
FORCERTC_OUT LDOON
ENABLEnNOPOWER TIMER
RESET/START T
TIMER
MAX
V(SYS)>V
ANDt> T
AND
(CYCLEMODEENABLED AND
CYCLE=POWER-UP DONE)]
LOW_SYS
CHECK
WHEN ANY OF THEBOOT PHASE
STATES ARESET:
(B)
1-WRITE TODVMREGISTERSISDISABLED
2-SM0EN,SM1EN,SYNCEN,LDO4ENPULL-DOWNRESISTORSON/
OFF
3-SUPPLY OUTPUT DISCHARGERESISTORSON
BOOT TIMEREXPIRES
OR
[HOTPLUG TIMEREXPIRES AND
V(SYS)<V
FOR5mSEC AND
SLEEP BY LOWSYSENABLED]
LOW_SYS
CYCLE=POWER
UP DONE
[DRESUME=HIDETECTED]
AND
SLEEP NOT SET BY THERMAL
FAULT]
AND
CYCLEMODESET
CYCLE=
INITIAL POWERUP
NORMAL MODE
ENABLEWRITE TODVMREGISTERS
RTCREGISTERSRESET IFRTC_OUT <V
TURNOFFENABLEPINPULL-DOWNREGISTERS
ENABLESUPPLY OUTPUT DISCHARGE
RESISTORS
UVLO_RTC
REBOOT
REQUEST
RESET/START
T
TIMER
nNOPOWER=LO
WAIT
SLEEP REQUEST
RESET/START
T
TIMER
WAIT
WAIT
(B)
FORCERTC_OUT LDOON
NNOPWER=LO
ALL SUPPLIESOFF
ALL REGISTERSRESET TODEFAULT
RESET/START TIMERS: T
,
T
, T
NORTC
HOTPLUG
BOOT
CYCLE=INITIAL POWERUP AND
CYCLEMODEENABLED AND
V(SYS)>V
AND
t> T
LOW_SYS
CHECK
t> T
AND
REBOOT REQUEST
TOHARDREBOOT
ENABLED
WAIT
TPS658620
Advanced Power Management Unit
SLVS993 – OCTOBER 2009
www.ti.com
The TPS658620 has an internal state machine that sets the operating modes based on the system status
and host commands. The state machine directly controls the state of the integrated supplies during
power-up sequences and normal operation. It also can change the on/off state of all integrated power
supplies and peripherals to implement protection functions or execute external hardware control or host
software commands.
Figure 3-11. TPS658620 Operation Mode State Machine
DETAILED DESCRIPTION
46
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