Motorola CPCI-6115 Manuel de service télécharger pdf (Page 28)

CPX8216 and CPX8216T Installation and Use (6806800A52C)

Chapter 2 System Architecture

Hot Swap Controller

Each of the nonhost slots in the chassis can be controlled from either HSC. When an HSC has

control over a domain, it has control over the nonhost boards in that domain. Each host

processor/bridge pair is controlled as a single item by the other processor/bridge pair. The

bridge and the host processor are linked together so that both must be present for power to be

applied. A host processor cannot be operated without its HSC.

With the CPX8216 architecture it is important that the system initializes to a state that allows

the host processors and HSCs to be in control of the system. The default conditions are:

■ System processors and bridges are powered up (if present)

■ System processors and bridges are disconnected from their busses

■ HSCs are not in control of either domain

■ Nonhost boards are powered off

■ Peripheral bays are powered up (if present)

■ Fans and power supplies are powered on

On a power cycle, all HSC registers are reset to default values. On a host reset or host PCI reset

the HSC clears its configuration space to default values and resets its Interrupt Mask register.

Other HSC registers are not affected by host reset. This has implications for domain control. For

example, if a host is controlling Domain A at the time of reset, when the host reboots it will still

have control of Domain A and the PCI bridges and busses for Domain A will be initialized. To

ensure that a host reset does not adversely affect other boards in the system, you should

release control before reset or transfer control to the standby host. Transferring control will

prevent interruption in system service.

Note Chassis components such as fans and power supplies may be controlled by either HSC

but not both. Default control belongs to Domain A and whichever HSC has control of Domain A

has control of the system functions.

If Domain A is not controlled, nonhost boards are powered-off and all LED updates to the

display panel and power supplies are suspended. Also, monitoring of alarm inputs from the

display panel and power supplies are inhibited.

Subsequent to the default, the system software must determine the configuration of the system

and then proceed to change it.

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 173 174

Pas de commentaire

Motorola CPCI-6115 Manuel de service Page 28