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Altera_Forum
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14 years ago

ff_rx_mod in TSE bug?

I am using the TSE with 32-bit wide data. When transmitting I'm using the ff_tx_mod[1:0] signal to truncate bytes off the last 32-bit word transmitted by the TSE. all modes work except mode "10" when...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

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I have a similar problem.

With signaltap i can see that tx_mod is properly set ('10') but the TSE refuse to transmit these 2 bytes...

I've done it with 11.1sp2

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If i assert tx_mod (empty signal) to '10' only when eop is true (else to '00') then the TSE is working propertly. This is a bug since Avalon ST interface specifications said that the empty signal is evaluated only when eop is true. Interesting this odd behaviur is visible only with an empty value of '10'.