RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Figure 31 Payload Generation
TALP builds (segments) cell
from T_DATA_BUFFER. In
this case from DS0s 6 and 7.
TFTC writes the bytes in
pairs into T_DATA_BUFFER
Channel
7
0
6
31
0
T_DATA_BUFFER
RL_SE R
5
6
7
8
9 10
. . . .
. . . .
Frames
127
For AAL0 mode the cell build process takes 48 bytes of line data and does not
add any AAL1 overhead bytes.
For DBCES mode, anytime a pointer is generated, the subsequent start of
structure will contain the bitmask field with the number of channels currently
active. Changes in the bitmask can only occur at this time.
9.2.1.3.3 Peak Cell Rates (PCRs)
For purposes of discussion, the following PCR information is assumed:
• Full cells are used,
• The PCR numbers are per line, and
• The SYS_CLK is 38.88 MHz.
9.2.1.3.3.1Peak Cell Rates (PCRs) for Structured Cell Formats
• For structured connection without CAS, PCR <= 171 x n cells per second per
connection where 1 <= n <= 32 (assuming completely filled cells).
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