Motorola PrPMC800/800ET Processor PMC Module User Manual
3 Functional Description
PrPMC800/800ET Processor PMC Module Installation and Use (PrPMC800A/IH5)
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Harrier I
2
C port 0 is also routed to pins on the P14 PMC user I/O connector. The connection to
the PMC connector provides a means to interface to an optional configuration SROM on the
baseboard. This allows the PrPMC800/800ET to determine hardware configuration information
from the baseboard. Refer to the Harrier ASIC Programmer’s Reference Guide for SROM
device address assignments.
baseboard. This allows the PrPMC800/800ET to determine hardware configuration information
from the baseboard. Refer to the Harrier ASIC Programmer’s Reference Guide for SROM
device address assignments.
10BaseT/100BaseTX Ethernet Channel
The PrPMC800/800ET module uses an Intel GD82559ER/82551IT Ethernet controller to
implement a 10BaseT/100BaseTX Ethernet channel. The GD82559ER/82551IT is a lower
power, lower cost version of the GD82559 without the wake-on-LAN features. The
GD82559ER/82551IT consists of both the Media Access Controller (MAC) and the physical
layer (PHY) in a single integrated package. A Pulse H0013 low profile transformer is used to
supply the external magnetics. The module will support a front panel Ethernet connection via a
low profile PC card style connector mounted at the front of the module (on models -12x1 and -
52x1). Optional rear I/O Ethernet is provided by routing the Ethernet transmit and receive signal
pairs to P14 connector (on models -11x9, -12x9, and -52x9).
implement a 10BaseT/100BaseTX Ethernet channel. The GD82559ER/82551IT is a lower
power, lower cost version of the GD82559 without the wake-on-LAN features. The
GD82559ER/82551IT consists of both the Media Access Controller (MAC) and the physical
layer (PHY) in a single integrated package. A Pulse H0013 low profile transformer is used to
supply the external magnetics. The module will support a front panel Ethernet connection via a
low profile PC card style connector mounted at the front of the module (on models -12x1 and -
52x1). Optional rear I/O Ethernet is provided by routing the Ethernet transmit and receive signal
pairs to P14 connector (on models -11x9, -12x9, and -52x9).
The 82559ER/82551IT interfaces to an AT93C46 serial EEPROM device that provides power-
up configuration information for the 82559ER/82551IT. This is a 1Kb device organized as 64 16-
bit words. Refer to the corresponding table in the VPD appendix of the PrPMC800/800ET
Processor PMC Module Programmer’s Reference Guide, for the contents of this device.
up configuration information for the 82559ER/82551IT. This is a 1Kb device organized as 64 16-
bit words. Refer to the corresponding table in the VPD appendix of the PrPMC800/800ET
Processor PMC Module Programmer’s Reference Guide, for the contents of this device.
Miscellaneous Control and Status
The Harrier ASIC contains a Miscellaneous Control and Status register that provides the
PrPMC800/800ET
PrPMC800/800ET
module with the module fail LED control, PrPMC EREADY# pin status,
PrPMC MONARCH# pin status, module reset control, and processor timebase enable control.
Refer to the Harrier ASIC Programmer’s Reference Guide for additional details.
Refer to the Harrier ASIC Programmer’s Reference Guide for additional details.
Timers
Timers on the PrPMC800/800ET board are provided by the Harrier ASIC. Refer to the Harrier
ASIC documents for programming details on these timers.
ASIC documents for programming details on these timers.
32-Bit Timers
Four 32-bit timers are provided by Harrier (MPIC) that may be used for system timing or to
generate periodic interrupts. Each timer is driven by a divide-by-eight prescaler which is
synchronized to the Power PC processor clock. For a 100 MHz processor bus, the timer
frequency would be 12.5 MHz.
generate periodic interrupts. Each timer is driven by a divide-by-eight prescaler which is
synchronized to the Power PC processor clock. For a 100 MHz processor bus, the timer
frequency would be 12.5 MHz.