L-ET4148-50C-DB LSI, L-ET4148-50C-DB Datasheet - Page 93
L-ET4148-50C-DB
Manufacturer Part Number
L-ET4148-50C-DB
Description
Manufacturer
LSI
Datasheet
1.L-ET4148-50C-DB.pdf
(298 pages)
Specifications of L-ET4148-50C-DB
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Preliminary Data Sheet
April 2006
Agere Systems Inc.
Appendix A: Registers
Acl_Result_Table
Description: This register returns a priority adjustment command based on the ACL number and ACE number.
Table 87. Acl_Result_Table Register Parameters
Table 88. Acl_Result_Table Field Parameters
acl_priority_code[4] defines the action taken by the ACL function. These functions are defined below:
0 = preserve packet’s priority value
1 = replace packet’s priority value with acl_priority_code[3:0]
This table is addressed by a concatenation of acl_index[5:0] (that identifies a particular ACL) and
ace_index[5:0] (that identifies a particular ACE). acl_index[5:0] occupies the upper portion of the concat-
enated address word.
ace_index[5:0] is an internal value (not accessible to the supervisor) that is derived from the priority encoding
of the bitwise and of all of the ACE maps retrieved for a particular packet, hence, identifying the matching ACE.
Base Address
Register Size
Register Instances
Register Spacing
Record Size
Record Instances
Record Spacing
acl_permit
acl_log
acl_priority_code[4:0]
0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
0
Parameter
1
Field Name
2
3
4
5
6
7
Single-Chip 48 x 1 Gbit/s + 2 x 10 Gbits/s Layer 2+ Ethernet Switch
(continued)
Figure 66. Acl_Result_Table Register Diagram
0x0003_4000
8
16384
Value
9
4096
NA
1
4
4
10
Agere Systems - Proprietary
Instances = 1
Instances = 1
Instances = 1
Offset = 0.25
Offset = 0.26
Offset = 0.27
Mode = R/W
Mode = R/W
Mode = R/W
Parameters
11
12
13
14
15
16
When asserted, the packet is permitted access to
the switching system. Otherwise, the denial mask is
applied to the packet’s destination map.
When asserted, the supervisor’s ACL logging port
is added to the packet’s destination map. Logging
and packet denial are independent.
The ACL priority opcode and priority value.
17
18
19
20
21
22
Description
23
8
24
7
25
6
26
5
acl_priority_code[4:0]
27
4
28
3
ET4148-50
29
2
30
1
31
0
93
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