Texas Instruments | TPS65911A for 66AK2G12 Processor (Rev. A) | User Guides | Texas Instruments TPS65911A for 66AK2G12 Processor (Rev. A) User guides

Texas Instruments TPS65911A for 66AK2G12 Processor (Rev. A) User guides
User's Guide
SWCU187A – August 2017 – Revised December 2017
TPS65911A User's Guide for 66AK2G12 Processor
This user's guide is a reference for integrating the TPS65911A power-management integrated circuit
(PMIC) into a system using the 66AK2G12 processor from Texas Instruments.
1
2
3
4
Contents
Introduction ................................................................................................................... 2
Platform Connection ......................................................................................................... 2
Power-Up Sequencing ...................................................................................................... 5
Getting Started With the TPS65911A Device .......................................................................... 10
List of Figures
1
Example Power Solution With TPS65911A .............................................................................. 2
2
Processor Connection With TPS65911A ................................................................................. 3
3
Power-Up Sequence for 66AK2G12 Processor ......................................................................... 5
4
Power Sequencing........................................................................................................... 7
List of Tables
1
EEPROM Power-Up Sequence of TPS65911A ......................................................................... 6
2
EEPROM Configuration for TPS65911A
.................................................................................
8
Trademarks
All trademarks are the property of their respective owners.
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1
Introduction
1
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Introduction
This user's guide is a reference for connectivity between the TPS65911A PMIC and the 66AK2G12
processor from Texas Instruments.
The TPS65911A EEPROM bit configuration and power-up sequence is also described. This user's guide
does not provide details about the power resources or the functionality of the device. For such information,
refer to the full specification document, TPS65911x Integrated Power Management Unit Top Specification.
2
Platform Connection
Figure 1 shows a high-level view of an example system-power solution proposal using the TPS65911A
device for the processor.
TPS65911A
12-V DC IN
TPS54620
TPS54429
5V
V5IN, VCCIO
VCC3, VCC4
VCC7
3.3 V
CVDD
DCDC CTRL
VCC1, VCC2
VCC5, VCC6
VDD1
66AK2G12
Multicore
SoC
CVDD1
1.35V
VDD2
VIO
LDOs
3.3V
1.8/3.3V
GPIO
LP2996A
SD
VTT
VDDQ/2
VREF
VDDQ/2
DDR3L
Copyright © 2017, Texas Instruments Incorporated
Figure 1. Example Power Solution With TPS65911A
Figure 2 shows the detailed connections between the processor and the TPS65911A device.
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Platform Connection
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TPS65911A
< 12 V
GNDC
VDDCtrl
66AK2G12
VBST
0.6±1.4 V, DVS
12.5-mV step,
default ON 1 V
DRVH
V5IN
SW
1 µF
CVDD
DRVL
VOUT
VREF
VFB
TRIP
100 nF
To V5IN
+5 V
SW1
REFGND
VCC1
VDD1
2000 mA
10 µF
2.2 µH
VFB1
VDD2
1200 mA
10 µF
VCCIO
CVDD1
10 µF
GND1
SW2 2.2 uH
VCC2
0.6-1.5 V, DVS
12.5-mV step,
default ON 1.35 V
VFB2
DVDD_DDR
10 µF
GND2
SWIO 2.2 uH
10 µF
VIO
1500 mA
VCC3
default ON 3.3 V
VFBIO
VDDIO connected to system
1.8/3.3 V IO supply
VDDIO
VCC4
4.7 µF
VCC6
LDO1
320 mA
1.1±3.3 V, 50-mV step
default ON 1.8 V
2.2 µF
VCC5
LDO2
320 mA
4.7 µF
DVDD33
10 µF
GNDIO
4.7 µF
DVDD18
AVDDA_XPLL
1.1±3.3 V, 50-mV step
default ON 1.8 V
2.2 µF
VCC6
2.7V < Vin < 3.6V
If LDO1 or LDO2
used
0.6±1.5 V, DVS
12.5-mV step,
default ON 1 V
1.1±3.3 V, 100-mV step
4.7 µF
VCC5
LDO3
200 mA
default ON 1.8 V
2.2 µF
VCC7
1.1±3.3 V, 50-mV step
LDO4
50 mA
4.7 µF
default ON 1.8 V
2.2 µF
VCCS
VCC4
VBACKUP
1.1±3.3 V, 100-mV step
LDO5
300 mA
default ON 3.3 V
2.2 µF
5±2000 mF
1.1±3.3 V, 100m-V step
12 pF
OSC32KIN
(crystal is optional, PMU will
boot with internal RC osc)
12 pF
VCC3
LDO6
300 mA
default ON 3.3 V
2.2 µF
1.1±3.3 V, 100-mV step
OSC32KOUT
LDO7
300 mA
BOOT1
default ON 3.3 V
2.2 µF
1.1±3.3 V, 100-mV step
VRTC
LDO8
300 mA
GPIO1/3/4/5/8
(leave GPIO floating if not used)
5V
VCC7
10K
VRTC
20 mA
default ON 3.3 V
2.2 µF
VRTC
Always-ON 1.8 V
VDDIO
2.2 µF
1 K2
PWRON
1 K2
SDA_SDI
I2CSDA
SCL_SCK
PWRDN
I2CSCL
INT1
(If not used, connect to VRTC)
GPIO
HDRST
EN2 (leave floating)
(leave floating if not used)
EN1 (leave floating)
SLEEP
EN
(leave floating)
TRAN
(leave floating)
PGOOD
(leave floating)
TESTV
(leave floating)
GPIO
PWRHOLD (leave floating)
NRESPWRON2
PORZ
CLK32KOUT
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Figure 2. Processor Connection With TPS65911A
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3
Platform Connection
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Notes for the connection diagram and operation defined by the EEPROM:
• The TPS65911A transitions from NO SUPPLY to OFF to ACTIVE states when a supply is inserted into
VCC7 (VMBHI_IT_MSK = 0 in EEPROM).
• The VMBCH threshold of the TPS65911A is programmed as 3.1 V so VCCS must be greater than
3.1 V for an OFF-to-ACTIVE transition.
• The voltage level of the main control signals (I2C, INT2, NRESPWRON, EN1, and EN2) is defined by
the VDDIO connection.
• The PWRHOLD pin is programmed as a GPI; therefore, the DEV_ON control bit is set to 1 after a
power-on event, and the PWRHOLD signal is not required to keep the PMIC active.
• To keep the PMIC in OFF mode, clear the DEV_ON bit before sending shutdown instructions;
otherwise, the PMIC turns back on.
• The internal RC oscillator is used for boot. After boot, software can switch to using a crystal oscillator if
it has been connected.
• If backup battery is not used, VBACKUP should be connected to VCC7.
• GPIO0 is a push-pull output at the VCC7 level.
• GPIO2, GPIO6, and GPIO7 are open drain-outputs and require an external pullup. These GPIOs can
actively pull down after 4 ms from the time the VCC7 supply is valid.
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Power-Up Sequencing
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3
Power-Up Sequencing
3.1
Power-Up Sequence for Processor
POWER‐UP SEQUENCE
BOOT‐UP PROCESS
ACTIVE MODE
Note 1
DVDD33
(3.3 V)
DVDD18
(1.8 V)
Internal LDO
(0.85 V)
DVDD_DDR
(1.35 V)
DDR3_VREFSSTL
Note 7
Note 6
CVDD, CVDD1
(1 V)
PORn
(3.3 V)
Note 2
Note 3
SYSOSC_IN/OUT
SYSCLK_P/N
...
Note 4
BOOTMODE
RESETSTATn
BOOTCOMPLETE
(1)
Power up begins by powering up DVDD33 first.
(2)
PORn is asserted until all supplies are within operating range.
(3)
Oscillator power-up time (approximately 1 to 2 ms).
(4)
BOOTMODE pins are latched at rising edge of PORn (synchronously using SYSOSC_IN / OUT or
SYSCLK_P / N).
(5)
RESETSTATn and BOOTCOMPLETE are outputs for informational purposes.
(6)
Oscillator stabilization time (approximately 2 ms).
(7)
If externally sourced, must be present prior to POR.
Figure 3. Power-Up Sequence for 66AK2G12 Processor
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Power-Up Sequencing
3.2
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TPS65911A EEPROM Power-Up Sequence
When the BOOT pin is set high, the TPS65911A powers up with the sequence required by the processor,
see Table 1. The correct power-up sequence is configured in the EEPROM (factory programmable only).
Apart from the main power rails required for the processor, several LDO rails are also powered up at initial
power up to support system peripherals.
Table 1 lists the power-up sequence for the TPS65911A device.
Table 1. EEPROM Power-Up Sequence of TPS65911A
TPS65911A Power Rail
Supply insertion to VCC7, VCCS
TPS65911A Sequence Number
(1)
–
VIO, LDO5, LDO6, LDO7, LDO8, GPIO2
2
3
LDO1, LDO2, LDO3, LDO4, GPIO7
4
VDD2, GPIO0
5
VDDCTRL, GPIO6
6
VDD1, CLK32KOUT
7
8
9
NRESPWRON
10
11
12
14
(1)
Supply insertion is the start-on event.
Figure 4 shows the power-up sequence timing.
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Power-Up Sequencing
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5-V input for TPS65911x
VRTC
1.8 V
PMIC_VIO
3.3 V
3.3-V LDOs
3.3 V
PMIC_GPIO2
3.3 V
3.3 V
3V3_DCIN
3.3 V
3V3_CONN
1.8 V
1.8-V LDOs
1.35 V
PMIC_VDD2
1.8 V
GPIO0
1V
PMIC_VDD_CTRL
1V
PMIC_VDD1
3.3 V
nRESPWRON2
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Time slot (2 ms between slots)
Figure 4. Power Sequencing
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Power-Up Sequencing
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Table 2 lists the EEPROM values for the TPS65911A device.
Table 2. EEPROM Configuration for TPS65911A
Register
Bit
SEL
VDD1 voltage level selection for boot
VDD1_REG
VGAIN_SEL
VDD1 gain selection, ×1 or ×2
EEPROM
VDD1 time slot selection
DCDCCTRL_REG
VDD1_PSKIP
VDD1 pulse skip mode enable
VDD2_OP_REG/
VDD2_SR_REG
SEL
VDD2 voltage level selection for boot
VDD2_REG
VGAIN_SEL
VDD2 gain selection, ×1 or ×3
EEPROM
VDD2 time slot selection
DCDCCTRL_REG
VDD2_PSKIP
VDD2 pulse skip mode enable
VIO_REG
SEL[3:9]
VIO voltage selection
EEPROM
VIO time slot selection
DCDCCTRL_REG
VIO_PSKIP
VIO pulse skip mode enable
VDDCtrl_OP_REG/
VDDCtrl_SR_REG
SEL
VDDCtrl voltage level selection for boot
EEPROM
LDO1_REG
VDDCtrl time slot
SEL[7:2]
EEPROM
LDO2_REG
SEL[7:2]
LDO3_REG
LDO4_REG
SEL[6:2]
SEL[7:2]
EEPROM
LDO6_REG
LDO7_REG
SEL[6:2]
SEL[6:2]
1.35 V
×1
5
Enable Skip
3.3 V
2
Enable Skip
1.0 V
1.8 V
1.8 V
1.8 V
1.8 V
4
LDO5 voltage selection
3.3 V
2
LDO6 voltage selection
3.3 V
2
LDO7 voltage selection
LDO7 time slot
SEL[6:2]
7
Enable Skip
4
LDO4 voltage selection
LDO6 time slot
EEPROM
LDO8_REG
LDO3 voltage selection
LDO5 time slot
EEPROM
×1
4
LDO4 time slot
SEL[6:2]
1.0 V
4
LDO2 voltage selection
LDO3 time slot
EEPROM
LDO5_REG
LDO1 voltage selection
LDO2 time slot
EEPROM
Option Selected
6
LDO1 time slot
EEPROM
8
Description
VDD1_OP_REG/
VDD1_SR_REG
3.3 V
2
LDO8 voltage selection
3.3 V
EEPROM
LDO8 time slot
2
CLK32KOUT pin
CLK32KOUT time slot
7
NRESPWRON, NRESPWRON2
pin
NRESPWRON time slot
10
GPIO0 pin
GPIO0 time slot
5
GPIO2 pin
GPIO2 time slot
2
GPIO6 pin
GPIO6 time slot
6
GPIO7 pin
GPIO7 time slot
4
VRTC_REG
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.
0
DEVCTRL_REG
CK32K_CTRL
0 = Clock source is crystal or external clock.
1 = Clock source is internal RC oscillator.
1
DEVCTRL_REG
DEV_ON
0 = No impact
1 = Will maintain device on, in ACTIVE or
SLEEP state
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Power-Up Sequencing
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Table 2. EEPROM Configuration for TPS65911A (continued)
Register
Bit
Description
Option Selected
DEVCTRL2_REG
TSLOT_LENGTH
Boot sequence time slot duration:
0 = 0.5 ms
1 = 2 ms
DEVCTRL2_REG
PWON_LP_OFF
0 = Turnoff after PWRON long press not
allowed.
1 = Turnoff after PWRON long press.
1
DEVCTRL2_REG
PWON_LP_RST
0 = No impact
1 = Reset digital core when device is OFF.
0
DEVCTRL2_REG
IT_POL
0 = INT1 signal will be active low.
1 = INT1 signal will be active high.
0
VMBHI_IT_MSK
0 = Device automatically switches on at NO
SUPPLY-to-OFF or BACKUP-to-OFF
transition.
1 = Start-up is reason required before switchon.
0
GPIO5_F_IT_MSK
0 = GPIO5 falling edge detection interrupt not
masked.
1 = GPIO5 falling edge detection interrupt
masked.
1
GPIO5_R_IT_MSK
0 = GPIO5 rising edge detection interrupt not
masked.
1 = GPIO5 rising edge detection interrupt
masked.
1
GPIO4_F_IT_MSK
0 = GPIO4 falling edge detection interrupt not
masked.
1 = GPIO4 falling edge detection interrupt
masked.
1
INT_MSK3_REG
GPIO4_R_IT_MSK
0 = GPIO4 rising edge detection interrupt not
masked.
1 = GPIO4 rising edge detection interrupt
masked.
1
GPIO0_REG
GPIO_ODEN
0 = GPIO0 configured as push-pull output.
1 = GPIO0 configured as open-drain output.
0
WATCHDOG_REG
WATCHDOG_EN
0 = Watchdog disabled
1 = Watchdog enabled, periodic operation with
100 s
0
VMBCH_REG
VMBBUF_BYPASS
0 = Enable input buffer for external resistive
divider.
1 = In single-cell system, disable buffer for
lower power consumption.
1
VMBCH_REG
VMBCH_SEL[5:1]
Select threshold for boot gating comparator
COMP1, 2.5–3.5 V.
3.1 V
EEPROM
AUTODEV_ON
0 = PWRHOLD pin is used as PWRHOLD
feature.
1 = PWRHOLD pin is GPI. After power-on,
DEV_ON is set high internally, no processor
action required to maintain supplies.
1
EEPROM
PWRDN_POL
0 = PWRDN signal is active low.
1 = PWRDN signal is active high.
1
INT_MSK_REG
INT_MSK3_REG
INT_MSK3_REG
INT_MSK3_REG
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Getting Started With the TPS65911A Device
4
Getting Started With the TPS65911A Device
4.1
First Initialization
4.1.1
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Power-Down Sequence Configuration
To meet processor power-down sequence requirements, select the reverse sequence by setting the
PWR_OFF_SEQ bit to 1 in the DEVCTRL_REG register.
4.1.2
I/O Polarity/Muxing Configuration
Voltage scaling for VDD1, VDD2, and VDDCtrl can be done through the main I2C interface. EN1/EN2
interface is not supported by the 66AK2G12 processor.
SLEEP mode is not supported by 66AK2G12 processor.
Update the GPIOx configuration (GPIOx_REG) based on application requirements.
4.1.3
Define Wake Up/Interrupt Event (SLEEP or OFF)
Select the appropriate bits in the INT_MSK_REG, INT_MSK2_REG, and INT_MSK3_REG registers to
enable an interrupt to the processor on the INT1 line.
4.1.4
Backup Battery Configuration
If the system has a backup battery, set the BBCHEN bit to 1 in the BBCH_REG register to enable backup
battery charging. The maximum voltage can be set based on backup battery specifications by using the
BBSEL bits in the BBCH_REG register.
4.1.5
DC-DC Maximum Current Capability
In VIO_REG, VDD1_REG, and VDD2_REG registers, set ILMAX according to required maximum current.
4.1.6
Sleep Platform Configuration
Configure the state of the LDOs when the SLEEP signal is used. By default in sleep mode, all resources
maintain their output voltage and load capability but response to transients (load change) is reduced.
Resources that must provide full load capability must be set in the SLEEP_KEEP_LDO_ON_REG and
SLEEP_KEEP_RES_ON_REG registers.
Resources that can be set off in the SLEEP state to optimize power consumption must be set in the
SLEEP_SET_LDO_OFF_REG and SLEEP_SET_RES_OFF_REG registers.
4.2
4.2.1
Event Management Through Interrupts
INT_STS_REG.VMBHI_IT
INT_STS_REG.VMBHI_IT indicates that a supply has been connected (PMIC leaving the BACKUP or NO
SUPPLY state) and the system must be initialized (see Section 4.1, First Initialization).
4.2.2
INT_STS_REG.PWRON_IT
INT_STS_REG.PWRON_IT is triggered by pressing the PWRON button. If the device is in the OFF or
SLEEP state, then this acts as a wake-up event and resources are reinitialized.
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4.2.3
INT_STS_REG.PWRON_LP_IT
INT_STS_REG.PWRON_LP_IT is the PWRON long-press interrupt. This interrupt is generated when the
PWRON button is pressed for 4 seconds. The application processor can make a decision to acknowledge
the interrupt. If this interrupt is not acknowledged in the next 1 second, the device interprets this as a
power-down event.
4.2.4
INT_STS_REG.HOTDIE_IT
INT_STS_REG.HOTDIE_IT indicates that the temperature of the die is reaching the limit. The software
must take action to decrease the power consumption before automatic shutdown.
4.2.5
INT_STS_REG.PWRHOLD_R/F_IT
INT_STS_REG.PWRHOLD_R/F_IT indicates a GPI interrupt event.
4.2.6
INT_STS_REG.RTC_ALARM_IT
INT_STS_REG.RTC_ALARM_IT is triggered when the RTC alarm set time is reached.
4.2.7
INT_STS2(3)_REG.GPIO_R/F_IT
INT_STS2_REG.GPIO_R/F_IT indicates a GPIO interrupt event. It can be used to wake up the device
from the SLEEP state. This can be an interrupt coming from any peripheral device or alike.
4.2.8
INT_STS_REG3.PWRDN_IT
INT_STS_REG.PWRDN_IT is triggered when PWRDN reset is detected.
4.2.9
INT_STS_REG3.VMBCH2_H/L_IT
INT_STS_REG.VMBCH2_H/L_IT is triggered when comparator2 input (VCCS) is above or below the
threshold.
4.2.10
INT_STS_REG3.WATCHDG_IT
INT_STS_REG.WATCHDOG_IT is triggered from the watchdog (periodic or interrupt mode).
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Revision History
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Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from I Revision (August 2017) to A Revision .................................................................................................. Page
•
12
Changed TPS65911AA to TPS65911A ................................................................................................ 2
Revision History
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