ATOMSW
BPB
0-15
BPGM
BPB
0-15
BPBM
Asynchronous
trnasfer
mode
output-buffer
modular
ATOM
buffer
ATOM
control
Bitmap
table
Back
pressure
best
effort
Back
pressure
best
effort
multicast
Back
pressure
guaranteed
Back
pressure
guaranteed
multicast
Control
Line
interface
Multiplexer
Recieve
not
ready
Switch-specific
overhead
When
the
number
of
cells
stored
in
the
FJFO
queue
exceeds
threshold
for
priority
control
the
system
discards low-priority
cells
The
following
list
gives
these
threshold
values
Threshold
40 allowable
range
0-48
Threshold
for multicast
24 allowable
range
0-32
Figure
B-4 shows
an
ATOMSW
output-buffer
threshold
values
graph
Figure
B-3
ATOMSW
Block
Diagram
ATOM
BUF
MUXO
MUX7
CTL-Bus
ATOM
BUF
ATOM
CTL
BMT
BPB
BPBM
BPG
BPGM
CTL
LINF
MUX
RNR
SSO
ATOMSW
Priority
Control
Functions
of
the
Expandable
ATM
Output
Buffer
Modular
Switch
B-5