Fujitsu MBA3073RC OOB signal receiver burst time detection requirements, Cominit/Comreset

1.3 Phy layer

Table 1.6 describes the OOB signal receiver requirements for detecting burst times, assuming Tburst is the length of the detected burst time. The burst time is not used to distinguish between signals.

Table 1.6 OOB signal receiver burst time detection requirements

Signal	Detection requirements
	may detect	shall detect
COMINIT/COMRESET	Tburst ≤ 100 ns	Tburst > 100 ns
COMSAS	Tburst ≤ 100 ns	Tburst > 100 ns

Table 1.7 describes the OOB signal receiver requirements for detecting idle times, assuming Tidle is the length of the detected idle time.

Table 1.7 OOB signal receiver idle time detection requirements

Signal	Detection requirements
	may detect	shall detect
COMINIT/COMRESET	175 ns ≤ Tidle < 525 ns	304 ns ≤ Tidle < 336 ns
COMSAS	525 ns ≤ Tidle < 1575 ns	911,7 ns ≤ Tidle < 1008 ns

Table 1.8 describes the OOB signal receiver requirements for detecting negation times, assuming Tidle is the length of the detected idle time.

Table 1.8 OOB signal receiver negation time detection requirements

Signal	Detection requirements
COMINIT/COMRESET	Tidle > 525 ns
COMSAS	Tidle > 1575 ns

A receiver shall detect an OOB signal after receiving four consecutive idle time/burst time pairs. It is not an error to receive more than four idle time/burst time pairs. A receiver shall not detect the same OOB signal again until it has detected the corresponding negation time (i.e., a COMINIT negation time for a COMINIT) or has detected a different OOB signal.

A SAS receiver shall detect OOB signals comprised of ALIGNs transmitted at any rate up to its highest supported physical link rate. This includes physical link rates below its lowest supported physical link rate (e.g., a SAS receiver supporting only 3,0 Gbps detects 1,5 Gbps based ALIGNs, providing interoperability with a SAS transmitter supporting both 1,5 Gbps and 3,0 Gbps).

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