Vp12 Diagnostics; Bus Controller Diagnostics - Northern Telecom DMS-100 Series Manual

2-40 Maintenance principles
The 68K card downloads firmware to each 68302 microprocessor and
cooperates with the 68302 firmware to check the following for each T1
span:
•
•
•
•
•
•

VP12 diagnostics

Similar to T1 diagnostics, the VP12 diagnostics consist of two components -
the 68K component and the TMS320SCI (DSP) component. The 68K
component checks various components and then downloads the 320SCI
firmware to each of the four DSP spans. It then works with the DSP
software to check the remainder of the VP12 card.
The following common VP12 elements are checked:
•
•
The following elements are checked for each DSP:
•
•
•
The 68K card downloads 320SCI firmware to check the following for each
DSP:
•
•
•
•
•
•

Bus controller diagnostics

The bus controller has a DSP that has firmware-based programming. There
is a diagnostic component to the firmware that is exercised by the 68K card.
297-7001-503 Standard 02.02 March 1994
68302 self-test
68K/68302 communications
T1 line circuit
T1 framer
T1 data path
T1 signaling
voice tap
connection memory
shared memory
private memory
control and status register
68K/DSP communications
shared memory arbiter
shared memory
private memory
DSP self-check
voice tap access