Arria® V Device Handbook: Volume 2: Transceivers

ID 683573
Date 5/29/2020
Public
Document Table of Contents

1.2.1.3.4. Encoder Output During Reset Sequence

Figure 27. 8B/10B Encoder Output During and After Reset Conditions


Table 19.  8B/10B Encoder Output During and After Reset Conditions
Operation Mode During 8B/10B Reset After 8B/10B Reset Release
Single Width Continuously sends the /K28.5/ code from the RD– column Some “don’t cares” due to pipelining in the transmitter channel, followed by three /K28.5/ codes with proper disparity—starts with negative disparity—before sending encoded 8-bit data at its input.
Double Width Continuously sends the /K28.5/ code from the RD– column on LSByte and the /K28.5/ code from the RD+ column on MSByte Some “don't cares” due to pipelining in the transmitter channel, followed by:
  • Three /K28.5/ codes from the RD– column before sending encoded 8-bit data at its input on LSByte.
  • Three /K28.5/ codes from the RD+ column before sending encoded 8-bit data at its input on MSByte.