Version Found: v1.7
Version Resolved and other Known Issues: See (Xilinx Answer 40469).
When simulating the Endpoint core that was set-up with 128-bit user interface and 64-bit BAR, the simulation will fail because malformed packet was sent from the Root Port simulation model (DSPORT). Cores with 32-bit BAR only or with 64-bit user interface are NOT affected.
Note: "Version Found" refers to the version the problem was first discovered. The problem may also exist in earlier versions, but no specific testing has been performed to verify earlier versions.
The issue was found in the pci_exp_usrapp_tx module under task tsk_memory_write_64:
if (ep_)
trn_terrfwd_n <= #(Tcq) 0;
trn_tsrc_rdy_n <= #(Tcq) 1;
case ((_len - 1) % 4)
1 : trn_trem_n <= #(Tcq) 2'b11; // D0---------
2 : trn_trem_n <= #(Tcq) 2'b10; // D0-D1------
3 : trn_trem_n <= #(Tcq) 2'b01; // D0-D1-D2---
0 : trn_trem_n <= #(Tcq) 2'b00; // D0-D1-D2-D3
if (ep_)
trn_terrfwd_n <= #(Tcq) 0;
trn_tsrc_rdy_n <= #(Tcq) 0;
case ((_len - 1) % 4)
0 : trn_trem_n <= #(Tcq) 2'b11; // D0---------
1 : trn_trem_n <= #(Tcq) 2'b10; // D0-D1------
2 : trn_trem_n <= #(Tcq) 2'b01; // D0-D1-D2---
3 : trn_trem_n <= #(Tcq) 2'b00; // D0-D1-D2-D3
Revision History:
12/17/2012 - Initial Release
| Answer Number | 问答标题 | 问题版本 | 已解决问题的版本 |
|---|---|---|---|
| 40469 | 7 Series Integrated Block for PCI Express - Release Notes and Known Issues for All Versions up to Vivado 2012.4 and ISE 14.7 | N/A | N/A |
| AR# 53550 | |
|---|---|
| 日期 | 06/21/2013 |
| 状态 | Active |
| Type | 已知问题 |
| IP | |