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PRCM Basic Programming Model
3.6.5.2.7 PRM_VC_BYPASS_VAL (Voltage Controller Bypass Command Register)
This register is used to address directly the power IC device through the I
2
C interface. It has the following
bit fields:
•
SLAVEADDR: Slave address value of the I
2
C interface of the power IC device (similar to
)
•
REGADDR: Address of the command or voltage value register of the power IC device (similar to
or
•
DATA: Data to be written to the command or voltage value register
•
VALID: Voltage command transaction enable and acknowledge bit
3.6.5.3
Voltage Processor Registers
Two identical sets of registers allow controlling both voltage processor modules.
The register sets are composed of the following registers:
•
PRM_VPn_CONFIG:
and
•
PRM_VPn_VSTEPMIN:
and
•
PRM_VPn_VSTEPMAX:
and
•
PRM_VPn_VLIMITTO:
and
•
PRM_VPn_VOLTAGE:
and
•
PRM_VPn_STATUS:
and
3.6.5.3.1 PRM_VP_CONFIG (Voltage Processor Configuration Register)
This register allows the configuration of the voltage processor module. It controls the following features of
the voltage processor:
•
Enable/disable the voltage processor
•
Force a voltage update into the power IC device
•
Initialize the power IC device initial VDD value into the voltage processor
•
Enable/disable the time-out capability of the voltage processor
•
Set the power IC initial VDD value
•
Set the error to voltage controller gain value
•
Set the error to voltage controller error offset
The device has the following voltage processor configuration registers:
•
•
3.6.5.3.2 PRM_VP_VSTEPMIN (Voltage Processor Minimum Voltage Step)
This register allows controlling the following features:
•
The minimum value of a voltage step between two updates
•
The slew rate for negative voltage step (in the number of cycles per step)
The device has the following voltage processor configuration registers:
•
•
3.6.5.3.3 PRM_VP_VSTEPMAX (Voltage Processor Maximum Voltage Step)
This register allows setting the following:
•
The maximum value of a voltage step between two updates
•
The slew rate for positive voltage step (in the number of cycles per step)
The device has the following voltage processor configuration registers:
423
SWPU177N – December 2009 – Revised November 2010
Power, Reset, and Clock Management
Copyright © 2009–2010, Texas Instruments Incorporated