Datasheet

668
32133D–11/2011
UC3D
selectable by OCD Registers, minimizing the chance that the AUX port will need to be shared
with an application.
31.3.4 Product Dependencies
In order to use this module, other parts of the system must be configured correctly, as described
below.
31.3.4.1 Power Management
The OCD clock operates independently of the CPU clock. If enabled in the Power Manager, the
OCD clock (CLK_OCD) will continue running even if the CPU enters a sleep mode that disables
the CPU clock.
31.3.4.2 Clocks
The OCD has a clock (CLK_OCD) running synchronously with the CPU clock. This clock is gen-
erated by the Power Manager. The clock is enabled at reset, and can be disabled by writing to
the Power Manager.
31.3.4.3 Interrupt
The OCD system interrupt request lines are connected to the interrupt controller. Using the OCD
interrupts requires the interrupt controller to be programmed first.
Table 31-5. Auxiliary Port Signals
Pin Name Pin Description Direction Active Level Type
MCKO Trace data output clock Output Digital
MDO[5:0] Trace data output Output Digital
MSEO[1:0] Trace frame control Output Digital
EVTI_N Event In Input Low Digital
EVTO_N Event Out Output Low Digital