## page was renamed from DataFormatHrb
= HRB Raw Data Format 2.0 =

Previous version: [[MStreamHRB_1_0|M-Stream HRB Raw Data Format 1.0]]

Hardware: [[HRB6ASD]]

||54 53 50 2A ...|| || || ||
||[[M-Link Data Layer|M-Link Header]]||[[MStream_2_0|M-Stream Header]]||HRB Data||[[M-Link Data Layer|CRC]]||

HRB payload data is encapsulated in [[MStream_2_0|M-Stream 2.0]] protocol using Data Subtype 0.

=== Subtype 0 User Payload ===

||32-bit word #||Contents||
||0||Device serial ID||
||1||Exact trigger position (27:24) and event number (23:0)||
||2||Timestamp (low bits)||
||3||Timestamp (high bits)||
||4..7||sample 0: 128 bits||
||8..11||sample 1: 128 bits||
||..N-1||sample N/4-2: 128 bits||

||<-32 rowclass="bits">M-Stream Header||
||word #||byte offset||bits||description||
||<:|4>0||<:|4>0||31:24||[[DeviceId|Device ID]]||
||23:18||Flags||
||17:16||Subtype (0)||
||15:0||Fragment length, 4*(N-2)||
||<:|2>1||<:|2>4||31:24||Fragment ID||
||23:0||Fragment offset (bytes)||
||<-32 rowclass="bits">M-Stream Subtype 0, first fragment||
||<:>2||<:>8||31:0||Device Serial||
||<:|3>3||<:|3>12||31:28||reserved||
||27:24||trig_pos||
||23:0||Event number||
||<:>4||<:>16||31:0||Trig timestamp seconds||
||<:>5||<:>20||31:0||Trig timestamp nanoseconds||
||<:>6||<:>24||31:0||<|3>HRB Raw Hits||
||<:-3>...||
||<:>N-1||<:>4*(N-1)||31:0||
||<-32 rowclass="bits">M-Stream Subtype 0, next fragments||
||<:>2||<:>8||31:0||<|3>HRB Raw Hits||
||<:-3>...||
||<:>N-1||<:>4*(N-1)||31:0||

== HRB Raw Hits ==

||word #||byte offset||bits||description||
||0||0||32||window 0, bits [31:0]||
||1||4||32||window 0, bits [63:32]||
||2||8||32||window 0, bits [95:64]||
||3||12||32||window 0, bits [127:96]||
||4||16||32||window 1, bits [31:0]||
||5||20||32||window 1, bits [63:32]||
||6||24||32||window 1, bits [95:64]||
||7||28||32||window 1, bits [127:96]||
||<:-4>...||


== HRB6ASD Notes ==

Maximum number of samples (N) is limited by Ethernet MTU since HWIP does not support IP fragmentation. With MTU=1496 maximum number of samples is 88.

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[[CategoryHrb|HRB]] [[CategoryRawData|RawData]] [[CategoryMStream|MStream]]