Power, Reset, and Clock Management
www.ti.com
A set of modular, re-usable FSM blocks to be assembled into the full clock and power management
mechanism. A register set and associated programming model. Functional sub-block definitions for clock
management, power management, system clock source generation, and master clock generation.
The device supports an enhanced power management scheme based on four functional power domains:
Generic Domains
• WAKEUP
• MPU
• PER
• RTC
The PRCM provides the following functional features:
• Software configurable for direct, automatic, or a combination thereof, functional power domain state
transition control
• Device power-up sequence control
• Device sleep / wake-up sequence control
• Centralized reset generation and management
• Centralized clock generation and management
The PRCM modules implement these general functional interfaces:
• OCP configuration ports
• Direct interface to device boundary
• Power switch control signals
• Device control signals
• Clocks control signals
• Resets signals
• A set of power management protocol signals for each module to control and monitor standby, idle and
wake-up modes (CM and PRM)
• Emulation signals
8.1.5.1 Interface Descriptions
This section lists and shortly describes the different interfaces that allow PRCM to communicate with other
modules or external devices.
8.1.5.1.1 OCP Interfaces
The PRCM has 1 target OCP interfaces, compliant with respect to the OCP/IP2 standard. The OCP port,
for the PRCM module is used to control power, reset and wake-up Management.
8.1.5.1.2 OCP Slave Interfaces
PRCM implements a 32-bit OCP target interface compliant to the OCP/IP2.0 standard.
8.1.5.1.3 Power Control Interface
The Device does has power domain switches over the device, this interface provides PRCM control over
power domain switches and receives responses from the power domains which indicate the switch status.
It also controls the isolation signals. The control for power domain switches will be latched in PRCM
Status Registers
8.1.5.1.4 Device Control Interface
This interface provides PRM management of several device-level features which are not specific to any
single power domain. This PRM interface controls signals to/from the device for global control:
518
Power, Reset, and Clock Management (PRCM) SPRUH73H–October 2011–Revised April 2013
Submit Documentation Feedback
Copyright © 2011–2013, Texas Instruments Incorporated
To Next Page
Loading...
Need help?
General
