L-ET4148-50C-DB LSI, L-ET4148-50C-DB Datasheet - Page 98

• Manufacturer Part Number: L-ET4148-50C-DB
• Manufacturer: LSI

Specifications of L-ET4148-50C-DB

• Lead Free Status / RoHS Status: Supplier Unconfirmed

ET4148-50
Single-Chip 48 x 1 Gbit/s + 2 x 10 Gbits/s Layer 2+ Ethernet Switch
Appendix A: Registers
Acl_Tcp_Key_Table_4
Description: This table performs the fifth and final stage of TCP port number look-up.
Table 97. Acl_Tcp_Key_Table_4 Register Parameters
Table 98. Acl_Tcp_Key_Table_4 Field Parameters
This fifth and final stage of TCP port number look-up utilizes 256 records. Two TCP port number keys are stored in
each record. The comparisons between the search argument and the keys result in a selection of one of three
result values. These are returned as the final output of the look-up process.
98
Base Address
Register Size
Register Instances
Register Spacing
Record Size
Record Instances
Record Spacing
tcp_key_{0..1}[15:0]
tcp_src_result_{0..3}[7:0]
tcp_dest_result_{0..3}[7:0]
0
4
8
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
0
1
tcp_src_result_0[7:0]
tcp_src_result_2[7:0]
Parameter
Field Name
2
3
4
5
tcp_key_0[15:0]
6
7
Figure 71. Acl_Tcp_Key_Table_4 Register Diagram
(continued)
8
9
tcp_dest_result_0[7:0]
tcp_dest_result_2[7:0]
0x0003_f000
10
Spacing = 2.0
Spacing = 2.0
Spacing = 2.0
Instances = 2
Instances = 3
Instances = 3
Mode = R/W
Mode = R/W
Mode = R/W
11
Parameters
Value
Offset = 0.0
Offset = 4.0
Offset = 4.8
4096
Agere Systems - Proprietary
256
NA
12
16
1
12
13
14
15
16
A set of 16-bit TCP port number values. These val-
ues are compared against the search argument.
The results of these comparisons are used to
select one of four index values for use in the next
stage of the look-up.
These 8-bit result values are returned as the final
output from the look-up process. These results cor-
respond to source port look-ups.
These 8-bit result values are returned as the final
output from the look-up process. These results cor-
respond to destination port look-ups.
17
tcp_src_result_1[7:0]
18
19
20
21
tcp_key_1[15:0]
22
9
Description
23
8
24
7
Preliminary Data Sheet
25
6
tcp_dest_result_1[7:0]
26
5
27
Agere Systems Inc.
4
28
3
29
2
April 2006
30
1
31
0