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TPS658620ZQZT датащи(PDF) 55 Page - Texas Instruments

номер детали TPS658620ZQZT
подробное описание детали  Advanced Power Management Unit
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3.54.3 DVM SUPPLIES - VOLTAGE TRANSITION CONTROL
TPS658620
Advanced Power Management Unit
www.ti.com
SLVS993 – OCTOBER 2009
Table 3-18. SM0-2, LDO0-9 Control (continued)
FORCE
ENABLE
TRANSITION
REBOOT
When 1
ON
ON
ENABLED
5ms
SET SLEEP
NORMAL
TO NORMAL
REQUEST
MODE
STATE
LDO5 and LDO9 will be turned on when LDO5_ON is 1 or LDO9_ON is 1, respectively. The RTC_OUT
LDO enable bits are located in the RTC control register, see real time clock section for details.
The supply enable defaults are unique for each device. See App Notes for device specific settings.
The output voltage for the DVM supplies can be set to one of the values programmed in the voltage
setting registers SM0V1, SM0V2, SM1V1, SM2V2, LDO2AV1, LDO2AV2, LDO2BV1, LDO2BV2, LDO4V1
and LDO4V2 in registers VCC1 and VCC2.
The voltage change for the DVM supplies is usually done with 2 I2C write commands:
1. The host writes the new voltage to the voltage setting register for the supply(s) that will have an output
voltage modification.
2. The voltage change starts by setting specific control bits in registers VCC1 and VCC2.
Bits VS in registers VCC1 and VCC2 select the next voltage for the DVM supplies. A voltage change is
started when ANY of the GO bits for the supply is set to 1. At the end of the voltage transition the GO bits
are cleared by the internal logic.
Table 3-19. DVM supply control
VCC1 [Addr 0x20]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
LDO4VS
LDO4GO
LDO2AVS2
LDO2AGO2
SM0VS1
SM0GO1
SM1VS1
SM1GO1
LDO4 VOLTAGE
Function
LDO2 VOLTAGE SELECTION
SM0 VOLTAGE SELECTION SM1 VOLTAGE SELECTION
SELECTION
SELECT
SELECT
SELECT
HOLD
HOLD
HOLD
HOLD
VOLTAGE
VOLTAGE
VOLTAGE
When 0
CURRENT
NOT USED
CURRENT
CURRENT
CURRENT
SET BY
SET BY
SET BY
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
LDO4V1
SM0V1
SM1V1
RAMP TO
SELECT
RAMP TO
SELECT
RAMP TO
SELECT
RAMP TO
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
When 1
NOT USED
SELECTED
SET BY
SELECTED
SET BY
SELECTED
SET BY
SELECTED
BY
LDO4V2
BY LDO4VS
SM0V2
BY SM0VS1
SM1V2
BY SM1VS1
LDO2BVS1
VCC2 [Addr 0x21]
Defaults in BOLD
Bit Number
B7
B6
B5
B4
B3
B2
B1
B0
Bit Name
LDO2BVS1
LDO2BGO1
LDO2AVS1
LDO2AGO1
SM0VS2
SM0GO2
SM1VS2
SM1GO2
LDO2 VOLTAGE
Function
LDO2 VOLTAGE SELECTION I SM0 VOLTAGE SELECTION SM1 VOLTAGE SELECTION
SELECTION
SELECT
SELECT
SELECT
HOLD
HOLD
HOLD
HOLD
VOLTAGE
VOLTAGE
VOLTAGE
When 0
CURRENT
NOT USED
CURRENT
CURRENT
CURRENT
SET BY
SET BY
SET BY
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
LDO2BV1
SM0V1
SM1V1
RAMP TO
RAMP TO
SELECT
SELECT
RAMP TO
SELECT
RAMP TO
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
VOLTAGE
When 1
SELECTED
NOT USED
SELECTED
SET BY
SET BY
SELECTED
SET BY
SELECTED
BY
BY
LDO2BV2
SM0V2
BY SM0VS2
SM1V2
BY SM1VS2
LDO2BVS1
LDO2BVS1
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