LVDS Tunneling Protocol and Interface (LTPI) IP User Guide: Agilex™ 3 and Agilex™ 5 FPGAs and SoCs

ID 844310
Date 8/15/2025
Public
Document Table of Contents

1.4.4.3. Link Speed Frame

The link speed frame is used to select the desired operating speed.
Table 17.  Link Speed Frame

Frame Offset

(bytes)

Size

(bits)

Bit Field Description
7 6 5 4 3 2 1 0  
0 8 Comma Symbol Comma symbol as defined in the Frame Type and Frame Subtype table.
1 8 Frame Subtype Frame subtype as defined in the Frame Type and Frame Subtype table.
2 8 LTPI Version Major LTPI Version Minor BCD Encoded LTPI Version (Major and minor LTPI version numbers).
3 8 Speed Select Speed select as defined in the Speed Capabilities Encoding table.
4 8 Reserved Reserved
5 8 Reserved Reserved
6 8 Reserved Reserved
7 8 Reserved Reserved
8 8 Reserved Reserved
9 8 Reserved Reserved
10 8 Reserved Reserved
11 8 Reserved Reserved
12 8 Reserved Reserved
13 8 Reserved Reserved
14 8 Reserved Reserved
15 8 CRC CRC8 checksum