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SWCS046C – MARCH 2010 – REVISED JUNE 2010
Table 70. EN2_SMPS_ASS_REG
Address Offset
0x48
Physical Address
Instance
Description
Configuration Register setting the SMPS Supplies driven by the multiplexed SDASR_EN2 signal.
When control bit = 1, SMPS Supply state and voltage is driven by the SDASR_EN2 control signal and is
also defined though SLEEP_KEEP_RES_ON register setting.
When control bit = 0 no effect: SMPS Supply state is driven though registers programming and the
device state
Any control bit of this register set to 1 will disable the I2C SR Interface functionality
Type
RW
7
6
5
4
3
2
1
0
RSVD
SPARE_EN2
VDD3_EN2
VDD2_EN2
VDD1_EN2
VIO_EN2
Bits
Field Name
Description
Type
Reset
7:5
RSVD
Reserved bit
RO
0x0
R returns
0s
4
SPARE_EN2
Spare bit
RW
0
3
VDD3_EN2
When 1:
RW
0
When SDASR_EN2 is high the supply is on.
When SDASR_EN2 is low and SLEEP_KEEP_RES_ON = 0 the supply
voltage is off.
When SDASR_EN2 is low and SLEEP_KEEP_RES_ON = 1 the SMPS
is working in low power mode.
When control bit = 0 no effect: supply state is driven though registers
programming and the device state
2
VDD2_EN2
When control bit = 1:
RW
0
When SDASR_EN2 is high the supply voltage is programmed though
VDD2_OP_REG register, and it can also be programmed off.
When SDASR_EN2 is low the supply voltage is programmed though
VDD2_SR_REG register, and it can also be programmed off.
When SDASR_EN2 is low and and VDD2_KEEPON = 1 the SMPS is
working in low power mode, if not tuned off though VDD2_SR_REG
register.
When control bit = 0 no effect: supply state is driven though registers
programming and the device state
1
VDD1_EN2
When control bit = 1:
RW
0
When SDASR_EN2 is high the supply voltage is programmed though
VDD1_OP_REG register, and it can also be programmed off.
When SDASR_EN2 is low the supply voltage is programmed though
VDD1_SR_REG register, and it can also be programmed off.
When SDASR_EN2 is low and and VDD1_KEEPON = 1 the SMPS is
working in low power mode, if not tuned off though VDD1_SR_REG
register.
When control bit = 0 no effect: supply state is driven though registers
programming and the device state
0
VIO_EN2
When control bit = 1,
RW
0
supply state is driven by the SCLSR_EN2 control signal and is also
defined though SLEEP_KEEP_RES_ON register setting:
When SDASR _EN2 is high the supply is on,
When SDASR _EN2 is low :
- the supply is off (default) or the SMPS is working in low power mode if
VIO_KEEPON = 1
When control bit = 0 no effect: SMPS state is driven though registers
programming and the device state
Copyright 2010, Texas Instruments Incorporated
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