Error Reporting; Error Reporting As A Local Bus Slave; Error Reporting As A Local Bus Master; Industrypack Error Reporting - Motorola MVME162FX Programmer's Reference Manual

reverse the polarity of the pacer clock output. The pacer clock
outputÕs programmable frequency range is from approximately
4 Hz to 16 MHz. The pacer clock logic also includes local bus
interrupt control.

Error Reporting

The following paragraphs describe the IP2 chip error reporting.

Error Reporting as a Local Bus Slave

The IP2 chip does not have the ability to assert the TEA* signal as a
local bus slave. Because of this, the only bus error cycles that should
ever be encountered when accessing to or through the IP2 chip are
those that come from an external local bus timer due to no response
from an IndustryPack. Note that any external local bus timer
should be set for no less than 5 microseconds to allow for normal
accesses to the slowest IndustryPack.

Error Reporting as a Local Bus Master

The IP2 chip does not connect to the ST1 and ST0 signal lines.
Consequently, when it receives a TEA* termination to any cycle for
which it is local bus master, no status will be available to indicate
the source of the bus error. There is a status bit in each DMAC status
register which indicates that a local bus error did occur as a
consequence of a DMA operation. The contents of the local bus
address counter can be examined for a valid address if a bus error
does occur.

IndustryPack Error Reporting

Each IndustryPack interface has an error pin. The error status from
the four interfaces are available in the General Control Registers.
Functional Description
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