![](http://datasheet.mmic.net.cn/330000/PM73123_datasheet_16444369/PM73123_228.png)
RELEASED
DATASHEET
PM73123 AAL1GATOR-8
ISSUE 2
PMC-2000097
8 LINK CES/DBCES AAL1 SAR
PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL
228
Field (Bits)
Description
R_DBCES_BM_ACT
(10)
Activity detected in the Bit Mask. Used to indicated
whether any channels in the DBCES structure are
active or not. Initialize to “0”.
Total bytes minus one remaining in the structure.
Not used in UDF-ML or UDF-HS mode. Initialize to
“0”.
R_TOT_LEFT
(9:0)
R_SN_CONFIG Word Format (0D
H
)
This word is maintained by the microprocessor
Field (Bits)
Description
R_CONDQ_DATA
(15:8)
ROBUST_SN_EN
(7)
Value of conditioned data inserted into lost cells
depending on the value of INSERT_DATA.
Set to 1 to enable the “Robust SN algorithm”. Set
to a “0’ for the “Fast SN Algorithm”.
Note: Do not set if DISABLE_SN is set. Only one of
these bits can be set.
Controls the format of the data inserted for lost
cells:
00
b
Insert xFF.
01
b
Insert data from R_CONDQ_DATA.
10
b
Insert old data from receive buffer.
11
b
Insert data from R_CONDQ_DATA with the
MSB controlled by the pseudorandom number
algorithm x
18
+ x
7
+ 1 (not valid for UDF-HS).
If set, both “Fast SN Algorithm” and “Robust SN
Algorithm” are disabled. RALP will neither drop nor
insert cells due to SN errors, but will maintain both
R_INCORRECT_SNP and R_INCORRECT_SN
counters. This bit should be set to 0 for AAL0 mode.
INSERT_DATA
(6:5)
DISABLE_SN
(4)