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8.4
IcePick Emulation Support in the PSC
The PSC supports IcePick commands that allow IcePick emulation tools to have some control over the
state of power domains and modules. This IcePick support only applies to the following module:
•
ARM [MDCTL14]
In particular,
Table 8-4
Power On and
Enable Features
Inhibit Sleep
Force Power
Force Active
NOTE: When emulation tools remove the above commands, the PSC immediately executes a state
transition based on the current values in the NEXT bit in PDCTL0 and the NEXT bit in
MDCTLn, as set by software.
8.5
PSC Interrupts
The PSC has an interrupt that is tied to the core interrupt controller. This interrupt is named PSCINT in the
interrupt map. The PSC interrupt is generated when certain IcePick emulation events occur.
8.5.1 Interrupt Events
The PSC interrupt is generated when any of the following events occur:
•
Power Domain Emulation Event (applies to pseudo/RAM power domain only)
•
Module State Emulation event
•
Module Local Reset Emulation event
These interrupt events are summarized in
Interrupt Enable Bits
Control Register
PDCTLn
MDCTLn
MDCTLn
The PSC interrupt events only apply when IcePick emulation alters the state of the module from the
user-programmed state in the NEXT bit in the MDCTL/PDCTL registers. IcePick support only applies to
the modules listed in
listed.
SPRUGX5A – May 2011
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shows IcePick emulation commands recognized by the PSC.
Table 8-4. IcePick Emulation Commands
Power On and Enable Descriptions
Allows emulation to prevent software from
transitioning the module out of the enable state.
Allows emulation to force the power domain into
an on state. Not applicable as AlwaysOn power
domain is always on.
Allows emulation to force the module into the
enable state.
Table 8-5
Table 8-5. PSC Interrupt Events
Enable Bit
Interrupt Condition
EMUIHBIE
Interrupt occurs when the emulation alters the power domain state
EMUIHBIE
Interrupt occurs when the emulation alters the module state
EMURSTIE
Interrupt occurs when the emulation tries to alter the module's local reset
Section
8.4; therefore, the PSC interrupt conditions only apply to those modules
Copyright © 2011, Texas Instruments Incorporated
IcePick Emulation Support in the PSC
Reset Features
Assert Reset
Wait Reset
Block Reset
and described in more detail in this section.
Power and Sleep Controller (PSC)
Reset Descriptions
Allows emulation to assert the
module's local reset.
Allows emulation to keep local
reset asserted for an extended
period of time after software
initiates local reset de-assert.
Allows emulation to block
software initiated local and
module resets.
111
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