Motorola CPX8000 User Manual

Physical Connection Process

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(H0), it said to be in the P1/H0 state. Similarly, one can speak of a board 
being in the H2/S0 state.

The physical connection process is the basic process of putting a board into 
a live system, or physically removing the board. The process includes two 
states:

❏ P0 - The board is physically separate from the system

❏ P1 - The board is fully seated, but not powered, and not active on 

the PCI bus. All pins are connected.

The hardware connection process involves the electrical connection or 
disconnection of the board. This process includes three states:

❏ H0 - The board is not active on the PCI bus. This state is equivalent 

to P1 above.

❏ H1 - The board has powered up and is sufficiently initialized to 

connect to the PCI bus.

❏ H2 - The board is powered, and enabled for access by a PCI bus 

transaction (normally by the host) in PCI configuration space only. 
The board configuration space is not yet initialized. 

When a newly inserted board has completed H2, the board is operable 
from a hardware perspective. It has run its power up diagnostics, initialized 
itself, loaded EEPROM data, etc. The blue LED is off in the H2 state, 
indicating that the board should not be pulled out.