RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Field (Bits)
Description
DBCES_BIT_MASK_ER There was a parity error in the DBCES Bit Mask.
R
(13)
PTR_RULE_ERROR
(12)
There was a violation of a structure pointer
generation rule. An eight-cell sequence begins with
an SN=0 cell and ends with an SN=7 cell. This bit
will be set if no structure pointer was received, more
than one structure pointer was received, or an ‘out
of range’ structure pointer was received in the
sequence. This condition will be checked only in
modes where a structure pointer is expected, and
no sequence number error or underrun occurred.
ALLOC_TBL_BLANK
(11)
A cell was dropped because of a blank allocation
table or because R_CHAN_DISABLE in the
R_BUF_CFG memory register was asserted.
POINTER_SEARCH
(10)
A cell was dropped because a valid structure
pointer has not yet been found.
FORCED_UNDERRUN A cell was dropped because a forced underrun
condition exists. A forced underrun condition can be
caused by an overrun, consecutive structure pointer
(9)
mismatches, and consecutive sequence number
errors.
SN_CELL_DROP
(8)
A cell was dropped in accordance with an SN
Algorithm (as specified in ITU-T Recommendation
I.363.1). If Fast SN processing is used and the line
is not in high speed mode, this bit will always be set
for the first cell if NODROP_IN_START = 0.
This bit will also be set for the first cell if ROBUST
SN processing is enabled.
POINTER_RECEIVED
A structure pointer was received.
(7)
PTR_PARITY_ERR
A cell was received with a structure pointer parity
error.
(6)
SRTS_RESUME
(5)
An SRTS resume has occurred. A valid SRTS value
was received and stored in the R_SRTS_QUEUE.
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