AR #32316 - LogiCORE Serial RapidIO v5.1 - If 16-bit Device IDs are used, treq_vld_n can assert before treq_sof_n on an SWRITE
LogiCORE Serial RapidIO v5.1 - If 16-bit Device IDs are used, treq_vld_n can assert before treq_sof_n on an SWRITE
| AR# | 32316 |
| Part | IP-RapidIO-Serial |
| Last Modified | 2009-03-24 00:00:00.0 |
| Status | Active |
| Keywords | SRIO, 5.1, SWRITE, target, request, data, treq_rdy_n, TREQ |
Description
Keywords: SRIO, 5.1, SWRITE, target, request, data, treq_rdy_n, TREQ
If Large System support is enabled (the core is configured to use 16-bit Device IDs), treq_vld_n can assert one cycle prior to the assertion of treq_sof_n during an SWRITE transaction.
Solution
To ensure that the User Application properly receives the SWRITE data, monitor both treq_vld_n and treq_sof_n to determine the start of the SWRITE frame.It is still necessary to monitor treq_vld_n during the frame to ensure that valid data is being transferred, as shown in cycle 3 in Figure 4-21 in the Serial RapidIO User Guide.
Revision History
03/23/2009 - Initial Release