首先引脚约束文件是基于参考2里面的教程修改而来的,我的板子上只有一个用户LED(AA18引脚),这个用户LED会用于指示是否成功和主机建立起PCIe连接。将这个LED和user_lnk_up信号相连即可。其他两个LED约束得删掉。 然后时钟引脚修改成E10和F10。PCIe复位信号接在了P16上,其他都不变。 注意,有些机器可能会出现插上这张
⑤我们只使用了lane0,因此将C6678的PCIERXP0,PCIERXN0,PCIETXP0,PCIETXN0与8112芯片的对应管脚连接,6678的PCIERXP1,PCIERXN1,PCIETXP1,PCIETXN1不适用故悬空放置,这样有问题吗?Port Link Control Register的LNK_MODE也设置为了X1。这样是不是就可以了?在配置寄存器时还有什么需要注意的吗? ⑥我们使用的桥芯片81...
引脚user_lnk_up,output,当IP核与与之相连的上游的端口进入ready状态,并可相互发送数据包时,该信号变为有效位。 fc_ph[7:0],output,Posted头包流控制认证,定义了该Posted头包流控制的类型。 fc_pd[11:0],output,Posted数据流控制认证,定义了该Posted数据流控制的类型。 fc_nph[7:0],output,非Posted头包...
Set PL_LINK_CTRL.LNK_MODE = 0x1 and PL_GEN2.LN_EN = 0x1 by calling APIs. 17 How do I check the lane width and speed for the PCIe established link? Check LINK_STAT_CTRL.LINK_SPEED: 1 for GEN1 and 2 for GEN2; LINK_STAT_CTRL. NEGOTIATED_LINK_WD: 1 for one lane and 2 for...
The XDMA IP core has auser_lnk_upoutput port which indicates that the PCIe core is linked up with a host device. Connect this pin to the input of “Utility Vector Logic” as shown below. Step 14: We will connect the output of “Utility Vector Logic” to the green LED in Aller. Rig...
ASPM not supported ClockPM- Surprise+ LLActRep+ BwNot+ ASPMOptComp+ LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk- ExtSynch- ClockPM- AutWidDis- BWInt+ AutBWInt- LnkSta: Speed 5GT/s (downgraded), Width x1 (ok) TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt+ RootCap:...
( posedge pcie_clk_c ) tickcount64_pcie_refclk <= tickcount64_pcie_refclk + 1; assign led_state = user_lnk_up || tickcount64_pcie_refclk[25]; // --- // PCIe CFG RX/TX <--> FIFO below // --- pcileech_pcie_cfg_a7 i_pcileech_pcie_...
assertstheaxi_aresetnsignalwhilemaintainingPCIelinkup. •1:Normaloperation. SeeClockingandResetsforfurtherinstructiononusingthissignal. user_lnk_upOOutputActive-HighIdentifiesthatthePCIExpresscoreislinkedup withahostdevice. PG195(v4.1)September21,2020SendFeedback DMA/BridgeSubsystemforPCIev4.130 Chapter3:Pr...
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend- LnkCap: Port #0, Speed 16GT/s, Width x32, ASPM L0s, Exit Latency L0s <64ns ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp- LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk- ...
else if (user_lnk_up)begin cnt_bus <= cnt_bus+1; end end WAIT_AWREADY: begin if(s_axib_awready && s_axib_wready) begin s_axib_awvalid <= 0; s_axib_wvalid <= 0; state<= SECOND_PACKET; end else if(s_axib_awready && !s_axib_wready)begin ...