MDIO post-read increment doesn't trigger interrupt

DaPe_2943731 · ‎May 02, 2019

I am using the advanced configuration of MDIO interface component and a number of registers configured to trigger an interrupt on read. This functionality works perfectly when a read (mdio frame opcode 3) is performed .

However when I perform a post-read address increment read (mdio frame opcode 2) the component does not generate a read interrupt.

Any ideas?

RodolfoGL · ‎May 02, 2019

Hi Dan,

I think there is an easy fix. In the vMDIO_Interface_v1_20.v file, change the logic that drives the "read" logic to:

always @(posedge op_clock)

begin

read <= (op_read | op_pos_read) & reg_cfg[MDIO_REG_INT_ON_READ] & addr_is_valid & is_page_en;

end

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MDIO post-read increment doesn't trigger interrupt

MDIO post-read increment doesn't trigger interrupt

Re: MDIO post-read increment doesn't trigger interrupt