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OPakh's avatar
OPakh
Icon for New Contributor rankNew Contributor
6 years ago

Problem with EPCQ-L1024 extended QUAD input fast transfer

I have a problem with EPCQ-L1024 extended QUAD input fast transfer.

For communication with it I use "Generic Serial Flash Interface Intel FPGA IP"

It works good in 1x mode but when I send command EBh lines DQ2-3 are always in 1

For example

master_write_32 $mp $operating_protocols_setting 0x00022002

master_write_32 $mp $control_register 0x00000101

master_write_32 $mp $read_instr 0x00000AEB

master_read_32 $mp 0x00000100 0x1

Lines DQ[2], DQ[3] are not used. What may be the problem?

I use Quartus 18.1(Windows 10), Arria 10 GX

1 Reply

  • ShafiqY_Intel's avatar
    ShafiqY_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    6 years ago

    Hi OPakh,

    If you want to enter the QUAD mode, you need to enable the QUAD mode first.

    This is the step to enable the QUAD mode:

    set flash_cmd_setting [expr {$base + 0x1c}]

    set flash_cmd_ctrl [expr {$base + 0x20}]

    master_write_32 $mp $flash_cmd_setting 0x00000035

    master_write_32 $mp $flash_cmd_ctrl 0x1

    I hope this will help.

    Thanks😉