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TPS658620ZQZT датащи(PDF) 49 Page - Texas Instruments

номер детали TPS658620ZQZT
подробное описание детали  Advanced Power Management Unit
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производитель  TI [Texas Instruments]
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TPS658620ZQZT датащи(HTML) 49 Page - Texas Instruments

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NORMAL MODE
SLEEP MODE
NORMAL MODE
RESUMEPIN
TPS6586x
MODE
ENTER/EXIT
SLEEP
T
RESUME(H)
T
RESUME(L)
T
RESUME(H)
SET SLEEP
EXIT SLEEP
TPS658620
Advanced Power Management Unit
www.ti.com
SLVS993 – OCTOBER 2009
Table 3-15. Sequencer Control, LDO5/LDO9 Enable
SUPPLYENE [Addr 0x14]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
LDO9_ON
LDO5_ON
SYSINEN
HOTDLY
SLEEP MODE
SETNORMAL
EXITSLREQ
SOFT RST
SYS_IN LOW
SET
SLEEP
SET
SOFTWARE
LDO9 ON/OFF
LDO5 ON/OFF
VOLTAGE
HOT RESET
TPS658620 IN
REQUEST
Function
TPS658620 IN
RESET
CONTROL
CONTROL
SETS SLEEP
DEGLITCH
NORMAL
EXIT
SLEEP MODE
CONTROL
MODE
MODE
CONTROL
NORMAL
5
µsec min,
GO TO SLEEP
When 0
OFF
OFF
DISABLED
NOT ACTIVE
MODE NOT
NOT ACTIVE
16
µsec max
at T>Twait
SET
FORCE
ENABLE
TRANSITION
REBOOT
When 1
ON
ON
ENABLED
5ms
SET SLEEP
NORMAL
TO NORMAL
REQUEST
MODE
STATE
SLEEP STATE: When the SLEEP state is set all supplies are set to OFF mode (with exception of
RTC_LDO) and the NOPOWER output is pulled low. A few internal blocks are still active, enabling
detection of system status changes that trigger the SLEEP state exit.
All I2C engines are reset and all RAM registers are reset to their default condition when the SLEEP state
is set. The RAM bits that have a default set via the non-volatile memory will keep the value they had
before the SLEEP state was set.
The SLEEP state ends when one of the following sequences is executed:
1. If SLEEP was set by thermal fault: The SLEEP state will end only when all external input supplies and
battery pack are removed and an UVLO condition is detected by the TPS658620, setting the POWER
UP state.
2. If SLEEP was not set by thermal fault: The SLEEP state will end when a hardware sleep exit request is
detected at RESUME pin
EXITING THE SLEEP STATE: The figure below shows the timing relationship needed on the RESUME
pin to exit the sleep mode. This applies for all cases where the sleep mode entry was triggered by any
event other than a thermal fault. Note that only the RESUME pin can be used to exit the SLEEP state.
Figure 3-12. Entering and Exiting Sleep Mode Resume
REBOOT REQUEST: The REBOOT REQUEST state is entered from the NORMAL state. It can be set via
software (SOFT_RST set to 1, register 0x14 Bit B0) or by a VIL level detection at HOTRST pin. When the
reboot request state is set an internal timer TWAIT (10ms typ) is started, and the NOPOWER pin is pulled
to ground. The reboot request ends when t > TWAIT. The REBOOT REQUEST will transition the device
state machine to the HARD REBOOT state. The REBOOT REQUEST is set if the HOTRST low pulse
width is greater than 10
µsec (typ).
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DETAILED DESCRIPTION
49


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