L-ET4148-50C-DB LSI, L-ET4148-50C-DB Datasheet - Page 104

• 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
Layer_2_Current_Time
Description: The time value used for MAC source address time stamp updates.
Table 109. Layer_2_Current_Time Register Parameters
Table 110. Layer_2_Current_Time Field Parameters
When a known source address is received, its timestamp is updated in Layer_2_Time_Stamp_Table. The
value written to that table is Layer_2_Current_Time.current_time[3:0].
104
Base Address
Register Size
Register Instances
Register Spacing
Record Size
Record Instances
Record Spacing
current_time[3:0]
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
1
Parameter
2
Field Name
3
4
5
6
7
Figure 80. Layer_2_Current_Time Register Diagram
8
(continued)
9
10
0x000c_4660
Instances = 1
Offset = 0.28
11
Mode = R/W
Parameters
Value
Agere Systems - Proprietary
NA
NA
4
1
4
1
12
13
14
15
16
The current time stamp setting.
17
18
19
20
21
22
Description
23
8
24
7
Preliminary Data Sheet
25
6
26
5
Agere Systems Inc.
27
4
current_time[3:0]
28
3
April 2006
29
2
30
1
31
0