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SWCS046C – MARCH 2010 – REVISED JUNE 2010
Bits
Field Name
Description
Type
Reset
7
Reserved
Reserved bit
RO
0
R returns
0s
6
RTC_PWDN
When 1, disable the RTC digital domain (clock gating and reset of RTC
RW
1
registers and logic).
This register bit is not reset in BACKUP state. (EEPROM bit)
5
CK32K_CTRL
Internal 32-kHz clock source control bit (EEPROM bit):
RW
0
when 0, the internal 32-kHz clock source is the crystal oscillator or an
external 32-kHz clock in case the crystal oscillator is used in bypass
mode
when 1, the internal 32-kHz clock source is the RC oscillator.
4
SR_CTL_I2C_SEL
Smartreflex registers access control bit:
RW
0
when 0: access to smartreflex registers by smartreflex I2C
when 1: access to smartreflex registers by control I2C The smartreflex
registers are: VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG and
VDD2_SR_REG.
3
DEV_OFF_RST
Write 1 will start an ACTIVE to OFF or SLEEP to OFF device state
RW
0
transition (switch-off event) and activate reset of the digital core.
2
DEV_ON
Write 1 will maintain the device on (ACTIVE or SLEEP device state) (if
RW
0
DEV_OFF = 0 and DEV_OFF_RST = 0).
1
DEV_SLP
Write 1 allows SLEEP device state (if DEV_OFF = 0 and
RW
0
DEV_OFF_RST = 0).
Write ‘0’ will start an SLEEP to ACTIVE device state transition (wake-up
event) (if DEV_OFF = 0 and DEV_OFF_RST = 0). This bit is cleared in
OFF state.
0
DEV_OFF
Write 1 will start an ACTIVE to OFF or SLEEP to OFF device state
RW
0
transition (switch-off event). This bit is cleared in OFF state.
Table 62. DEVCTRL2_REG
Address Offset
0x40
Physical Address
Instance
Description
Device control register
Type
RW
7
6
5
4
3
2
1
0
Reserved
TSLOT_LENGTH
IT_POL
PWON_LP_OFF
PWON_LP_RST
SLEEPSIG_POL
Bits
Field Name
Description
Type
Reset
7:6
Reserved
Reserved bit
RO
0x0
R returns
0s
5:4
TSLOT_LENGTH
Time slot duration programming (EEPROM bit):
RW
0x3
When 00 : 0 s
When 01 : 200 s
When 10 : 500 s
When 11 : 2 ms
3
SLEEPSIG_POL
When 1, SLEEP signal active high
RW
0
When 0, SLEEP signal active low
2
PWON_LP_OFF
When 1, allows device turn-off after a PWON Long Press (signal low).
RW
1
PWON_LP_RST
When 1, allows digital core reset when the device is OFF.
RW
0
IT_POL
INT1 interrupt pad polarity control signal (EEPROM bit):
RW
0
When 0, active low
When 1, active high
Copyright 2010, Texas Instruments Incorporated
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