Forum Discussion

RYuan's avatar
RYuan
Icon for New Contributor rankNew Contributor
5 years ago

AN881 HBM2 two channels reading data not align on 1SM21CH

Hi,

I recompiled AN881 for S10 MX 16G HBM2 p/n 1SM21CHU1F53E1VG on Q19.2 Pro.

When I did 1st read of HBM2, I saw both hbmc_axi_0_0_rlast and hbmc_axi_0_0_rvalid were aligned to hbmc_axi_0_1_rlast and hbmc_axi_0_1_rvalid though the c output was wrong 0xFFFFFFFF (stp file: stp1_read_addr0_getffffffff.7z). When did 2nd or more reads, hbmc_axi_0_0 misaligned hbmc_axi_0_1, rdata were not aligned, too (stp file: stp1_read_addr100_getffffffff.7z). The c output was still wrong.

I think the reading data and signals of HBM2 should always align since these are combinational circuits. Please confirm this. Thanks.

Regards,

Rong

1 Reply

  • NurAida_A_Intel's avatar
    NurAida_A_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    5 years ago

    Hi RYuan,

    Thank you for joining this Intel Community.

    Please allow me sometime to look into your issue. I shall come back to you with findings.

    Thank you for your patience.

    Regards,

    Aida