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ACT8931A Datasheet(PDF) 26 Page - Active-Semi, Inc

Part # ACT8931A
Description  Advanced PMU for Rockchip RK2928/RK2926 Processors
PDF  42 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT8931A Datasheet(HTML) 26 Page - Active-Semi, Inc

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ACT8931A
Rev 3, 29-Nov-12
Copyright © 2012 Active-Semi, Inc.
Innovative Power
TM
ActivePMU
TM and ActivePathTM are trademarks of Active-Semi.
I
2CTM is a trademark of NXP.
- 26 -
www.active-semi.com
SYSTEM CONTROL INFORMATION
The ACT8931A is optimized for use in applications
using the Rockchip RK2928/RK2926 processors,
supporting both the power domains as well as the
signal interface for these processors.
While the ACT8931A supports many possible
configurations for powering a processor, one of the
most common configurations is detailed in this
datasheet. In general, this document refers to the
ACT8931A pin names and functions. However, in
cases where the description of interconnections
between these devices benefits by doing so, both
the ACT8931A pin names and the Rockchip
RK2928/RK2926
processors
pin
names
are
provided. When this is done, the Rockchip
RK2928/RK2926 pin names are located after the
ACT8931A pin names, and are italicized and
located inside parentheses. For example, OUT1
(IO) refers to ACT8931A's OUT1 pin, identifying
that
it
is
connected
to
the
Rockchip
RK2928/RK2926’s IO power domain.
Interfacing with the Rockchip RK2928/RK2926 Processors
Table 3:
ACT8931A and Rockchip RK2928/RK2926 Power Modes
Table 2:
ACT8931A and Rockchip RK2928/RK2926 Power Domains
POWER DOMAIN
ACT8931A CHANNEL TYPE
DEFAULT VOLTAGE CURRENT CAPABILITY
IO, GSensor, NandFlash, USB_Host11,
TP VCC, CODEC_3.0V, Camera IO
etc.
REG1
DC/DC
3.3V
1100mA
DDR3
REG2
DC/DC
1.5V
1100mA
Core
REG3
DC/DC
1.2V
1200mA
VDD28_CIF
REG4
LDO
2.8V
320mA
VCC_SD
REG6
LDO
3.0V
320mA
LCD_VCC
REG7
LDO
3.0V
320mA
Camera_1.8V
REG5
LDO
1.8V
320mA
POWER
MODE
CONTROL STATE
POWER DOMAIN STATE
QUIESCENT
CURRENT
NORMAL
PWRHLD is asserted
REG1, REG2, REG3, REG4, REG5,
REG6 and REG7 are on.
420µA
SYSTEM
OFF
PWRHLD is de-asserted.
REG1, REG2, REG3, REG4, REG5,
REG6 and REG7 are all off.
<18µA
Table 4:
ACT8931A and RK2928/RK2926 Signal Interface
ACT8931A
DIRECTION
RK2928/RK2926
SCL
I2C3_SCL
SDA
I2C3_SDA
VSEL
GPIO4_D0
nRSTO
NPOR
nIRQ
BAT_LOW
nPBSTAT
Power_KEY
PWRHLD
Power_ON



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