Visible to Intel only — GUID: jmw1616606318489
Ixiasoft
Visible to Intel only — GUID: jmw1616606318489
Ixiasoft
3.5.4. Example of TX Parallel Data for PMA width = 64 (X=2)
The following data is specific to the X=2 case. N indicates the number of PMA lanes. For a given N, n can be from 0 --> N-1. N can be up to 8 for FGT, and up to 4 for FHT, and depends on the number of PMA lanes. Enable Double width transfer = 1. Refer to Variables Defining Bits for the Interfacing Ports in Port and Signal Reference for full variable definitions.
Condition | Bits | TX Parallel Data for n=0 | Bits | TX Parallel Data for n=1 | ●● | Bits | TX Parallel Data for n=7 |
---|---|---|---|---|---|---|---|
Second Stream | 159 | Write Enable for TX Core FIFO in Elastic Mode | 319 | Write Enable for TX Core FIFO in Elastic Mode | ●● | 1279 | Write Enable for TX Core FIFO in Elastic Mode |
151:120 | TX Data (Upper Data Bits) | 311:280 | TX Data (Upper Data Bits) | 1391:1240 | TX Data (Upper Data Bits) | ||
118 | TX PMA Interface Data Valid | 278 | TX PMA Interface Data Valid | 1238 | TX PMA Interface Data Valid | ||
111:80 | TX Data (Lower Data Bits) | 271:240 | TX Data (Lower Data Bits) | ●● | 1231:1200 | TX Data (Lower Data Bits) | |
First Stream | 79 | Write Enable for TX Core FIFO in Elastic Mode | 239 | Write Enable for TX Core FIFO in Elastic Mode | 1199 | Write Enable for TX Core FIFO in Elastic Mode | |
71:40 | TX Data (Upper Data Bits) | 231:200 | TX Data (Upper Data Bits) | 1191:1160 | TX Data (Upper Data Bits) | ||
38 | TX PMA Interface Data Valid | 198 | TX PMA Interface Data Valid | ●● | 1158 | TX PMA Interface Data Valid | |
31:0 | TX Data (Lower Data Bits) | 191:160 | TX Data (Lower Data Bits) | 1151:1120 | TX Data (Lower Data Bits) |
The following are the TX PMA Interface Data Valid signals for each of PMA Lanes, for each stream, in Example of TX Parallel Data for PMA width = 64 (X =2).
- If PMA lanes n=0, for first stream data, data valid signal = tx_parallel_data [38]
- If PMA lanes n=0, for second stream data, data valid signal = tx_parallel_data [118]
- If PMA lanes n=1, for first stream data, data valid signal = tx_parallel_data [198]
- If PMA lanes n=1, for second stream data, data valid signal = tx_parallel_data [278]