Power And Sleep Controller (Psc); System Control Module - Texas Instruments TMS320DM355 Instruction

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3.7 Power and Sleep Controller (PSC)

In the DM355 system, the Power and Sleep Controller (PSC) is responsible for managing transitions of
system power on/off, clock on/off, and reset. A block diagram of the PSC is shown in
the operations of the PSC are transparent to software, such as power-on-reset operations. However, the
PSC provides you with an interface to control several important clock and reset operations.
The PSC includes the following features:
Manages chip power-on/off, clock on/off, and resets
Provides a software interface to:
– Control module clock ON/OFF
– Control module resets
Supports IcePick emulation features: power, clock, and reset
For more information on the PSC, see the ARM Subsystem User's Guide.
Emulation
RESETN
VDD

3.8 System Control Module

The DM355's system control module is a system-level module containing status and top-level control logic
required by the device. The system control module consists of a miscellaneous set of status and control
registers, accessible by the ARM and supporting all of the following system features and operations:
Device identification
Device configuration
– Pin multiplexing control
– Device boot configuration status
ARM interrupt and EDMA event multiplexing control
Special peripheral status and control
– Timer64+
– USB PHY control
– VPSS clock and video DAC control and status
– DDR VTP control
– Clockout circuitry
– GIO de-bounce control
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PLLC
clks
Always on
domain
Figure 3-5. DM355 Power and Sleep Controller (PSC)
Digital Media System-on-Chip (DMSoC)
SPRS463A – SEPTEMBER 2007 – REVISED SEPTEMBER 2007
arm_clock
arm_mreset
PSC
arm_power
Interrupt AINTC
module_clock
module_mreset
module_power
TMS320DM355
Figure 3-5. Many of
DMSoC
ARM
MODx
Detailed Device Description 77