RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
R_DATA_LAST Word Format (0AH)
This word is maintained by the microprocessor
Field (Bits)
Description
Not used
(15:13)
Write with a 0 to maintain future software
compatibility.
LAST_CHAN
(12:8)
Channel number (0 to 31) of the last DS0 with a bit
set in the R_CHAN_ALLOC memory registers.
Not used
(7:6)
Write with a 0 to maintain future software
compatibility.
Reserved
(5:4)
Write with a 0 to maintain future software
compatibility.
R_DATA_LAST
(3:0)
Number of signaling bytes in the structure, minus
one. (For example, for an E1 SDF-MF VC with six
DS0s, R_DATA_LAST is set to 2. An E1-SDF-MF
VC with seven DS0s is set to 3 as one signaling
nibble is unused.) Not used in UDF-ML, UDF-HS,
and SDF-FR modes.
R_DATA_LAST = RoundUp[# of DS0’s/2] –1.
R_TOT_LEFT Word Format (0BH)
This word is read-only and is maintained by RALP
Field (Bits)
Description
Not used
(15:14)
Driven with a 0. Mask on reads to maintain future
software compatibility.
R_DBCES_BM_IN_NEXT Indicates that a bitmask is expected in the next
structure. Initialize to “0”.
(13)
R_DBCES_BM_LEFT
(12:11)
Total unprocessed bytes remaining in bit mask
structure. Initialize to “0”.
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