Intel Cyclone 10 GX User Manual

Figure 17. Framing Layer Metaframe Format
Diagnostic
Synchronization
Scrambler State
SKP
Control and
Data Words
Diagnostic
Synchronization
Scrambler State
SKP
Metaframe Length
The framing control words include:
• Synchronization (SYNC)—for frame delineation and lane alignment (deskew)
• Scrambler State (SCRM)—to synchronize the scrambler
• Skip (SKIP)—for clock compensation in a repeater
• Diagnostic (DIAG)—provides per-lane error check and optional status message
To form a metaframe, the Enhanced PCS frame generator inserts the framing control
words and encapsulates the control and data words read from the TX FIFO as the
metaframe payload.
Figure 18. Interlaken Synchronization and Scrambler State Words Format
bx10 b011110 h0F678F678F678F6
bx10 b001010 Scrambler State
66 63 58 57 0
Figure 19. Interlaken Skip Word Format
bx10 b000111
66 63 58
h21E
57
h1E
48
h1E
47
h1E
40
h1E h1E h1E
0
The DIAG word is comprised of a status field and a CRC-32 field. The 2-bit status is
defined by the Interlaken specification as:
• Bit 1 (Bit 33): Lane health
— 1: Lane is healthy
— 0: Lane is not healthy
• Bit 0 (Bit 32): Link health
— 1: Link is healthy
— 0: Link is not healthy
2. Implementing Protocols in Intel Cyclone 10 GX Transceivers
UG-20070 | 2018.09.24
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Intel Cyclone 10 GX Specifications

General

Brand	Intel
Model	Cyclone 10 GX
Category	Transceiver
Language	English