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Gary Wong 8cc6a2fae5 Remove comment about the USRMCLK primitive being untested.

Tested and verified working: the trivial configuration:

    module USRMCLK( USRMCLKI, USRMCLKTS );
        input USRMCLKI, USRMCLKTS;
    endmodule

    module top( input clk );
        reg[ 24:0 ] count = 0;

        always @( posedge clk ) begin
            count <= count + 1'b1;
        end

        USRMCLK mspi( .USRMCLKI( count[ 20 ] ), .USRMCLKTS( count[ 24 ] ) );
    endmodule

produces the expected output (toggling at high frequency, toggling
tri-state at lower frequency) on an LFE5U-85 when fed with an appropriate
clock.  See https://bayimg.com/AAnNKAAGO for an example.  The top
(magenta) trace is the MCLK line.

2020-04-02 21:35:35 -06:00

849 B

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nextpnr-ecp5 Primitive Support List

nextpnr-ecp5 currently supports the following primitives:

ALU54B (limited support, must be manually placed)
CCU2C
CLKDIVF
DCUA
DDRDLLA
DELAYF
DELAYG
DP16KD
DQSBUFM
DTR
ECLKSYNCB
EHXPLLL
EXTREFB
GSR
IDDR71B
IDDRX1F
IDDRX2DQA
IDDRX2F
IOLOGIC
JTAGG (untested)
L6MUX21
LUT4
MULT18X18D (cascade functionality not supported)
ODDR71B
ODDRX1F
ODDRX2DQA
ODDRX2DQSB
ODDRX2F
OSCG
OSHX2A
PCSCLKDIV
PFUMX
SEDGA (untested)
SIOLOGIC
TRELLIS_DPR16X4
TRELLIS_ECLKBUF
TRELLIS_FF
TRELLIS_IO
TRELLIS_SLICE
TSHX2DQA
TSHX2DQSA
USRMCLK

849 B Raw Blame History

nextpnr-ecp5 Primitive Support List

849 B

Raw Blame History