IEEE 1394a-2000 pdf download IEEE Standard for a High Performance Serial Bus—Amendment 1
For the purposes of this standard, the following definitions, terms, and notational conventions apply. The IEEEDictionary of Electrical and Electronics Terms B3] should be consulted for terms not defined in this clause.
Replace 2.1 with the following:
2.1 Conformance
The following keywords are used to differentiate between different levels of requireents and optionality in thisstandard.
2.1.1 expected: A keyword used to describe the behavior of the hardware or soltware in the design models assumedby this standard.Other hardware and software design models may also be implemented.
2.1.2 ignored: A keyword that describes bits, bytes, quadlets, octlets, or fields whose values are not checked by therecipient.
2.1.3 may: A keyword that indicates flexibility of choice with no implied preference.
2.1.4 reserved: A keyword used to describe objects-bits, bytes, quadlets, octlets, and fields-or the code valuesassigned to these obiects: the obiect or the code value is set aside for future standardization by the IEEE. A reservedobject shall be zeroed by its originator or, upon development of a future IEEE standard, set to a value specified bysuch a standard. The recipient of a reserved object shall not check its value. The recipient of an object whose codevalues are defined by this standard shall check its value and reject reserved code values.
2.1.5 shall: A keyword indicating a mandatory requirement. Designers are required to implement all such mandatoryrequiremments to ensure interoperability with other products conforming to this standard.
2.1.6 should: A keyword indicating flexibility of choice with a trongly preferred alternative. Equivalent to the phraseis recommended
Change the head for 2.2 as follows:
2.2 Technical glossary
Replace the following in 2.2, in alphabetical order. Replace the “x”in 2.2.x with the appropriate numbers:
2.2.x acknowledge packet: An 8-bit packet that may be transmitted in response to the receipt of a primary packetThe most and least significant nibbles are the one’s complement of each other. Syn: acknowledge.
2.2x arbitration: The process by which nodes compete for control of the bus. Upon completion of arbitration, thewinning node is able to transmit a packet or initiate a short bus reset.
2.2.x arbitration reset gap: The minimum period of idle bus (longer than a normal subaction gap) that separates fairness intervals.
2.2.x asynchronous packet: A primary packet transmitted in accordance with asynchronous arbitration rules (out-side of the isochronous period).
2.2x base rate: The lowest data rate used by Serial Bus in a backplane or cable environment. In multiple speed environments. all nodes are able to receive and transmit at the base rate. The base rate for the cable environment is98.304 MHz100 ppm.
2.2.x bus manager: The node that provides power management, sets the gap count in the cable environment, andpublishes the topology of the bus and the maximum speed for data transmission between any two nodes on the busThe bus manager node may also be the isochronous resource manager node.
2.2.x concatenated transaction: A split transaction comprised of concatenated subactions.
22.x cycle master: The node that generates the periodic cycle start packet 8000 times a second.
2.2.x doublet: Two bytes, or 16 bits, of data.
2.2x fairness interval: A time period delimited by arbitration reset gaps. Within a fairness interval, the total numberof asynchronous packets that may be transmitted by a node is limited. Each node’s limit may be explicitly establishedby the bus manager or it may be implicit.
2.2.x gap: A period of idle bus.
IEEE 1394a-2000 pdf download
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