mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 88

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

SECTION 4
RESET
The reset block of the MPC823 has a reset control logic that determines the cause of reset,
synchronizes it if necessary, and resets the appropriate logic modules. The memory
controller, system protection logic, interrupt controller, and parallel I/O pins are initialized
only on hard reset. Soft reset initializes the internal logic while maintaining the system
configuration.
Power-On Reset
External Hard Reset
Loss-of-Lock
Software Watchdog
Check Stop
Debug Port Hard Reset
JTAG Reset
External Soft Reset
Debug Port Soft Reset
NOTE:
— indicates that the logic circuitry is not affected.
SOURCE
RESET
indicates that the logic circuitry is reset or the appropriate pin is driven by the source.
AND PLL
Freescale Semiconductor, Inc.
RESET
STATE
RESET
LOGIC
For More Information On This Product,
—
—
Table 4-1. Possible Reset Results
MPC823 REFERENCE MANUAL
SYSTEM
CONFIG
RESET
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MODULE
CLOCK
RESET
—
RESET EFFECT
HRESET
DRIVEN
PIN
—
CONFIG
DEBUG
PORT
INTERNAL
OTHER
RESET
LOGIC
SRESET
DRIVEN
PIN
4-1