L-ET4148-50C-DB LSI, L-ET4148-50C-DB Datasheet - Page 81

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

Specifications of L-ET4148-50C-DB

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Preliminary Data Sheet
April 2006
Agere Systems Inc.
Appendix A: Registers
Acl_Ip_Key_Table_5
Description: This table performs the sixth stage of IP address look-up.
Table 64. Acl_Ip_Key_Table_5 Register Parameters
Table 65. Acl_Ip_Key_Table_5 Field Parameters
This sixth stage of IP address look-up marks the end of processing for IPv4 addresses. This stage utilizes 32
records for IPv4/IPv6 or 1,024 records for IPv4-only.
ipv4_result_{0..1}[23:0] utilizes the following format:
{ ip_src_addr_index_{0..1}[8:0], ip_src_addr_flow_id_{0..1}[2:0],
ip_dest_addr_index_{0..1}[8:0], ip_dest_addr_flow_id_{0..1}[2:0] }
Base Address
Register Size
Register Instances
Register Spacing
Record Size
Record Instances
Record Spacing
ipv4_key[31:0]
ipv4_result_{0..1}[23:0]
ipv6_key[127:0]
12
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 9
0
Parameter
1
Field Name
ipv6_key[95:88]
ipv6_key[63:56]
2
3
4
5
6
7
Figure 50. Acl_Ip_Key_Table_5 Register Diagram
Single-Chip 48 x 1 Gbit/s + 2 x 10 Gbits/s Layer 2+ Ethernet Switch
(continued)
8
9
0x0003_8000
10
16384
Value
1024
Agere Systems - Proprietary
Spacing = 4.0
NA
Instances = 1
Instances = 2
Instances = 1
16
16
11
Mode = R/W
Mode = R/W
Mode = R/W
Parameters
1
Offset = 0.0
Offset = 4.8
Offset = 0.0
ipv6_key[87:64] or ipv4_result_0[23:0]
ipv6_key[127:96] or ipv4_key[31:0]
ipv6_key[55:32] or ipv4_result_1[23:0]
ipv6_key[31:0]
12
13
14
15
16
17
A 32-bit IPv4 address value. This value is com-
pared against the search argument. The result of
this comparison is used to select one of two result
values.
One of these 24-bit result values is returned as the
final result of an IPv4 address look-up.
A 128-bit IPv6 address value. This value is com-
pared against the search argument. The result of
this comparison is used to select one of two index
values for use in the next stage of the look-up.
18
19
20
21
22
23
8
Description
24
7
25
6
26
5
27
4
28
3
29
2
ET4148-50
30
1
31
0
81