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CIF Peripheral Model - SimpleTimer

86 CoMET Version 5.9 – Tutorial

Event Responses for SimpleTimer

From the specification we can prepare the following table of events and the corresponding

responses.

Event Response

Reset Deassert outputs, clear all registers

MTR (Match Timer Register) equal to

General Timer register

Corresponding MatchInterrupt Port goes high

if Match Enabled and Interrupt Enabled

Bus Read Return value of register determined by

address

Bus Write GTR General Timer Register General Timer Register set to new value

Bus Write Match Timer Register n (MTRn) MTRn set to value.

Bus Write Timer Enable Register (TER) Enable or disable MTRn depending on value

written

Bus Write Timer Interrupt Enable Register

(TIER)

Enable or disable interrupt n depending on

value written

Unmatch (MTR (Match Timer Register) equal

to General Timer register). Note that this

takes place one click tick after a Match.

Respond to Match no longer true. Interrupt

stays high.

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Comet Labs 48-Port 10 Guía de usuario Pagina 90