Microchip Technology MA300015 Data Sheet
© 2011 Microchip Technology Inc.
DS70150E-page 163
dsPIC30F6010A/6015
21.7
Peripheral Module Disable (PMD)
Registers
Registers
The Peripheral Module Disable (PMD) registers pro-
vide a method to disable a peripheral module by stop-
ping all clock sources supplied to that module. When a
peripheral is disabled via the appropriate PMD control
bit, the peripheral is in a minimum power consumption
state. The control and STATUS registers associated
with the peripheral will also be disabled so writes to
those registers will have no effect and read values will
be invalid.
vide a method to disable a peripheral module by stop-
ping all clock sources supplied to that module. When a
peripheral is disabled via the appropriate PMD control
bit, the peripheral is in a minimum power consumption
state. The control and STATUS registers associated
with the peripheral will also be disabled so writes to
those registers will have no effect and read values will
be invalid.
A peripheral module will only be enabled if both the
associated bit in the PMD register is cleared and the
peripheral is supported by the specific dsPIC DSC vari-
ant. If the peripheral is present in the device, it is
enabled in the PMD register by default.
associated bit in the PMD register is cleared and the
peripheral is supported by the specific dsPIC DSC vari-
ant. If the peripheral is present in the device, it is
enabled in the PMD register by default.
21.8
In-Circuit Debugger
When MPLAB
®
ICD 2 is selected as a debugger, the
In-Circuit Debugging functionality is enabled. This
function allows simple debugging functions when used
with MPLAB IDE. When the device has this feature
enabled, some of the resources are not available for
general use. These resources include the first 80 bytes
of data RAM and two I/O pins.
function allows simple debugging functions when used
with MPLAB IDE. When the device has this feature
enabled, some of the resources are not available for
general use. These resources include the first 80 bytes
of data RAM and two I/O pins.
One of four pairs of debug I/O pins may be selected by
the user using configuration options in MPLAB IDE.
These pin pairs are named EMUD/EMUC, EMUD1/
EMUC1, EMUD2/EMUC2 and MUD3/EMUC3.
the user using configuration options in MPLAB IDE.
These pin pairs are named EMUD/EMUC, EMUD1/
EMUC1, EMUD2/EMUC2 and MUD3/EMUC3.
In each case, the selected EMUD pin is the Emulation/
Debug Data line, and the EMUC pin is the Emulation/
Debug Clock line. These pins will interface to the
MPLAB ICD 2 module available from Microchip. The
selected pair of debug I/O pins is used by MPLAB
ICD 2 to send commands and receive responses, as
well as to send and receive data. To use the In-Circuit
Debugger function of the device, the design must
implement ICSP connections to MCLR, V
Debug Data line, and the EMUC pin is the Emulation/
Debug Clock line. These pins will interface to the
MPLAB ICD 2 module available from Microchip. The
selected pair of debug I/O pins is used by MPLAB
ICD 2 to send commands and receive responses, as
well as to send and receive data. To use the In-Circuit
Debugger function of the device, the design must
implement ICSP connections to MCLR, V
DD
, V
SS
,
PGC, PGD and the selected EMUDx/EMUCx pin pair.
This gives rise to two possibilities:
1.
If EMUD/EMUC is selected as the debug I/O pin
pair, then only a 5-pin interface is required, as
the EMUD and EMUC pin functions are multi-
plexed with the PGD and PGC pin functions in
all dsPIC30F devices.
pair, then only a 5-pin interface is required, as
the EMUD and EMUC pin functions are multi-
plexed with the PGD and PGC pin functions in
all dsPIC30F devices.
2.
If EMUD1/EMUC1, EMUD2/EMUC2 or EMUD3/
EMUC3 is selected as the debug I/O pin pair,
then a 7-pin interface is required, as the
EMUDx/EMUCx pin functions (x = 1, 2 or 3) are
not multiplexed with the PGD and PGC pin
functions.
EMUC3 is selected as the debug I/O pin pair,
then a 7-pin interface is required, as the
EMUDx/EMUCx pin functions (x = 1, 2 or 3) are
not multiplexed with the PGD and PGC pin
functions.
Note:
If a PMD bit is set, the corresponding
module is disabled after a delay of 1
instruction cycle. Similarly, if a PMD bit is
cleared, the corresponding module is
enabled after a delay of 1 instruction cycle
(assuming the module control registers
are already configured to enable module
operation).
module is disabled after a delay of 1
instruction cycle. Similarly, if a PMD bit is
cleared, the corresponding module is
enabled after a delay of 1 instruction cycle
(assuming the module control registers
are already configured to enable module
operation).