Visible to Intel only — GUID: nik1398706959260
Ixiasoft
Visible to Intel only — GUID: nik1398706959260
Ixiasoft
2.8.3. Word Aligner in Manual Mode for CPRI
PCS-PMA Interface Width | rx_std_wa_patternalign Behavior | rx_syncstatus Behavior | rx_patterndetect Behavior |
---|---|---|---|
10 | Level sensitive | One parallel clock cycle (When three control patterns are detected) | One parallel clock cycle |
20 | Edge sensitive | Remains asserted until next rising edge of rx_std_wa_patternalign | One parallel clock cycle |
PCS-PMA Width = 10
When the PCS-PMA interface width is 10, 3 consecutive word alignment patterns found after the initial word alignment in a different word boundary causes the word aligner to resynchronize to this new word boundary if the rx_std_wa_patternalign remains asserted; rx_std_wa_patternalign is level sensitive. If you deassert rx_std_wa_patternalign, the word aligner maintains the current word boundary even when it finds the alignment pattern in a new word boundary. When the word aligner is synchronized to the new word boundary, rx_patterndetect and rx_syncstatus are asserted for one parallel clock cycle.
PCS-PMA Width =20
When the PMA-PCS width is 20, any alignment pattern found after the initial alignment in a different word boundary causes the word aligner to resynchronize to this new word boundary on the rising edge of rx_std_wa_patternalign; rx_std_wa_patternalign is edge sensitive. The word aligner maintains the current word boundary until the next rising edge of rx_std_wa_patternalign. When the word aligner is synchronized to the new word boundary, rx_patterndetect asserts for one parallel clock cycle and rx_syncstatus remains asserted until the next rising edge of rx_std_wa_patternalign.