... | @@ -5,8 +5,8 @@ This page defines a standard format for time-tag in OHR designs. |
... | @@ -5,8 +5,8 @@ This page defines a standard format for time-tag in OHR designs. |
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A time-tag is composed of four fields; Metadata, UTC seconds, Coarse
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A time-tag is composed of four fields; Metadata, UTC seconds, Coarse
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time, Fine time.
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time, Fine time.
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The Metadata field holds application specific informations. Four bits
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The Metadata field holds application specific informations. The four
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are reserved for the time-tag format version.
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MSBs are reserved for the time-tag format version.
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The UTC seconds field comes from a counter incremented by a PPS (Pulse
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The UTC seconds field comes from a counter incremented by a PPS (Pulse
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Per Second) signal. This counter can be in the WR (White Rabbit) core in
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Per Second) signal. This counter can be in the WR (White Rabbit) core in
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