MIC7400_15 Datasheet, PDF (52/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with HyperLight Load® and I2C Control

Micrel, Inc.
MIC7400
Standby Register (03’h)
This register controls standby mode operation. Global stand-by mode can either be enabled by I²C or by changing the
logic state of the STBY input pin. Global stand-by is controlled by the STBY_MODEB bit. When STBY_MODEB [6] = 1
then the regulators output voltages are set to their normal-mode output voltage settings, (05’h – 0A’h) registers. When
STBY_MODEB [6] = 0 then regulators output voltages are set to the standby-mode output voltage settings, (0B’h – 10’h)
registers. If STBY [1-6] register is set to logic “0”, then the output is shut off in standby mode.
The global power good flag is asserted when an output is disabled unless the power good mask bit (PGOOD_MASK[x]) is
set to 1.
Table 8. Standby Register
Register Name
STBY_CTRL_REG
Address
Field
bit R/W Default
STBY1
0 R/W
1
STBY2
1 R/W
1
STBY3
2 R/W
1
STBY4
3 R/W
1
STBY5
4 R/W
1
STBY6
5 R/W
1
STBY_MODEB 6 R/W
1
Reserved
7 R/W
0
Standby Register
0x03’h
Description
Regulator 1 Standby Voltage Control
0 = OFF
Regulator 2 Standby Voltage Control
0 = OFF
Regulator 3 Standby Voltage Control
0 = OFF
Regulator 4 Standby Voltage Control
0 = OFF
Regulator 5 Standby Voltage Control
0 = OFF
Regulator 6 Standby Voltage Control
0 = OFF
Global Standby Control
0 = All regulators in Standby Mode
1 = All regulators in Normal Mode
Not Used
1 = ON
1 = ON
1 = ON
1 = ON
1 = ON
1 = ON
March 3, 2015
52
Revision 2.0