XRT79L71
REV. P1.0.3
PRELIMINARY
1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
á
284
RECEIVE ATM CELL PROCESSOR BLOCK - RECEIVE USER CELL FILTER CONTROL - FILTER 0
(ADDRESS = 0X1743)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Unused
Receive User
Cell Filter # 0
Enable
Copy Cell
Enable
Discard Cell
Enable
Filter if Pat-
tern Match
R/O
R/O
R/O
R/O
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
B
IT
N
UMBER
N
AME
T
YPE
D
ESCRIPTION
7 - 4
Unused
R/O
3
Receive User Cell Filter #
0 Enable
R/W
Receive User Cell Filter # 0 - Enable:
This READ/WRITE bit-field permits the user to either enable or
disable Receive User Cell Filter # 0. If the user enables Receive
User Cell Filter # 0, then User Cell Filter # 0 will function per the
configuration settings in Bits 2 through 0, within this register.
If the user disables Receive User Cell Filter # 0, then User Cell
Filter # 0 then all cells that are applied to the input of Receive
User Cell Filter # 0 will pass through to the output of Receive
User Cell Filter # 0.
0 - Disables Receive User Cell Filter # 0.
1 - Enables Receive User Cell Filter # 0.
2
Copy Cell Enable
R/W
Copy Cell Enable - Receive User Cell Filter # 0:
This READ/WRITE bit-field permits the user to either configure
Receive User Cell Filter # 0 (within the Receive ATM Cell Pro-
cessor Block) to copy all cells that have header byte patterns that
comply with the "user-defined" criteria, per Receive User Cell Fil-
ter # 0, or to NOT copy any of these cells.
If the user configures Receive User Cell Filter # 0 to copy all cells
complying with a certain "header-byte" pattern, then a copy (or
replicate) of this "compliant" ATM cell will be routed to the
Receive Cell Extraction Buffer.
If the user configures Receive User Cell Filter # 0 to NOT copy
all cells complying with a certain "header-byte" pattern, then NO
copies (or replicates) of these "compliant" ATM cells will be
made nor will any be routed to the Receive Cell Extraction
Buffer.
0 - Configures Receive User Cell Filter # 0 to NOT copy any cells
that have header byte patterns which are compliant with the
"user-defined" filtering criteria.
1 - Configures Receive User Cell Filter # 0 to copy any cells that
have header byte patterns that are compliant with the "user-
defined" filtering criteria, and to route these copies (of cells) to
the Receive Cell Extraction Buffer.
N
OTE
:
This bit-field is only active if "Receive User Cell Filter # 0"
has been enabled.