RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Figure 37 Cell Reception
R_DATA_BUFFER
Channel
17
21
31
0
0
RFTC
17 18 19 20 21 22
. . . .
. . . .
Frames
RALP reassembles bytes from
the cell. In this case, into DS0s
17 and 21.
511
The RALP determines channels by reading from the R_CHAN_ALLOC table and
then storing the data in the corresponding timeslots of successive frame buffers
in the R_DATA_BUFFER.
For DBCES mode, the CHNACT table is used instead of the R_CHAN_ALLOC
to determine which channels are contained within the structure. Since the
DBCES structure only has data for the active channels, only the active channels
are written the frame buffers in the R_DATA_BUFFER.
Figure 38 shows the contents of the receive data buffer for ESF-formatted T1
data for lines in the SDF-MF mode. Only the first 24 bytes of each frame buffer
and the first 24 frame buffers of every 32 are used. This provides storage for 384
frames or 16 multiframes of T1 data.
PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL
116
PMC [ PMC-SIERRA, INC ]
