Motorola PrPMC800/800ET Processor PMC Module Manual De Usuario

The PrPMC800/800ET

module requires only a +3.3V input voltage. The processor core voltage 

and the Harrier core voltage are generated on the module from the +3.3V input using the 
LTC1702 dual synchronous switching regulator. In addition to the Harrier core voltage, the 
+2.5V supply provides the processor, Harrier, and L2 cache I/O voltages.

A block diagram of the PrPMC800/800ET

module reset logic appears in 

There are five standard sources of reset on the PrPMC800/800ET. They are:

1. Power-Up reset

2.

PMC PCI RST#

3.

Watchdog Timer reset via the Harrier Watchdog 1 Timer output

4.

Software generated module reset from Harrier RSTOUT control bit

5.

Debug RESET_L signal from debug header

The following table describes the function of each reset source. A module reset includes the 
processor, Harrier and Ethernet. The RESETOUT_L pin must be tied into the baseboard reset 
logic, which drives PCIRST# in order to produce module reset.

Power-Up Reset

x

x

PMC PCI RST#

x

WDT1 Timer Output

x

SW Reset

x

Debug Reset

x