Texas Instruments 990 User Manual page 208

Error Messages
A.l.3 Packet-Level Errors
The packet-level software reports error conditions in the
following format.
COMM ERROR (PK) = NNNN OGCC.SREE.SSID.DSID
where:
NNNN is the data packet address of the packet affected by
the error (for use by analysts only).
OG is the virtual channel group.
CC is the logical channel number. Together OG and CC are
referred to as the logical channel indicator (LCI) and
identify the PVC affected by the error.
SR is the packet peS) and peR) counts. These values are
each right justified in the left and right nibble of
this byte. The maximum value of each should not
exceed 7.
EE is the error code. It defines the type of error
condition encountered at run time:
Error
Code Meaning
01 Invalid LCI
02 Invalid packet type
03
Invalid packet length (too small)
04
Invalid state in send receive ready
05 Invalid state in send receive not ready
06
Invalid sta te on packet time-out
07 Invalid state on ac k nowledg emen t time-out
08
Reset received
09 Reset sent
OA Packet re transmi t failed
SSID is the source (sender) ID (SID).
DSID is the destination ID (DID).
A-4 2270526-9701