Getting Started With Tps65910 And Omapl-137, Omapl-138, And Tms320C6742/6/8 Processors; First Initialization - Texas Instruments TPS65910 User Manual

Getting Started With TPS65910 and OMAPL-137, OMAPL-138, and TMS320C6742/6/8 Processors

Register
VPLL_REG
EEPROM
VAUX1_REG
EEPROM
VMMC_REG
EEPROM
VAUX33_REG
EEPROM
VAUX2_REG
EEPROM
CLK32KOUT pin
NRESPWRON pin
VRTC_REG
DEVCTRL_REG
DEVCTRL_REG
DEVCTRL2_REG
DEVCTRL2_REG
INT_MSK_REG
VMBCH_REG
4 Getting Started With TPS65910 and OMAPL-137, OMAPL-138, and TMS320C6742/6/8
Processors
4.1

First Initialization

4.1.1 I/O Polarity/Muxing Configuration
Program DEVCTRL2_REG.SLEEPSIG_POL according to the GPIO from the processor. This can be set to
active low or active high for SLEEP transition. Software configuration allows specific power resources to
enter low consumption state.
Set DEVCTRL_REG.DEV_SLP = 1 to allow SLEEP transition when requested.
Update the GPIO0 configuration (GPIO0_REG) based on your needs.
4.1.2 Define Wake-Up/Interrupt Event (SLEEP or OFF)
Select the appropriate bits in the INT_MSK_REG and INT_MSK2_REG registers to activate an interrupt to
the processor on the INT1 line.
10
TPS65910 User Guide For OMAPL-137, OMAPL-138, and TMS320C674x
Family of Processors
Table 4. EEPROM Configuration for TPS65910 (continued)
Bit
SEL LDO voltage selection
LDO time slot
SEL LDO voltage selection
LDO time slot
SEL LDO voltage selection
LDO time slot
SEL LDO voltage selection
LDO time slot
SEL LDO voltage selection
LDO time slot
CLK32KOUT time slot
NRESPWRON time slot
VRTC_OFFMASK 0 = VRTC LDO will be in low-power mode during
OFF state.
1 = VRC LDO will be in full-power mode during
OFF state.
RTC_PWDN 0 = RTC in normal power mode
1 = Clock gating of RTC register and logic, low-
power mode
CK32K_CTRL 0 = Clock source is crystal/external clock.
1 = Clock source is internal RC oscillator.
TSLOT_LENGTH Boot sequence time slot duration:
0 = 0.5 ms
1 = 2 ms
IT_POL 0 = INT1 signal will be active low.
1 = INT1 signal will be active high.
VMBHI_IT_MSK 0 = Device automatically switches on at NO
SUPPLY-to-OFF or BACKUP-to-OFF transition.
1 = Start-up reason is required before switch-on.
VMBCH_SEL[1:0] Select threshold for main battery comparator
threshold VMBCH.
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Description
SWCU071B – December 2010 – Revised October 2015
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Option Selected
1.8 V
7
1.8 V
6
3.3 V
5
3.3 V
5
3.3 V
6
7
7 + 1
Low-power mode
1
Crystal
2 ms
1
0 = Automatic switch on
from supply insertion
3 V