Fujifilm Xeon S26361-F3099-L828 データシート
製品コード
S26361-F3099-L828
Datasheet
19
2.6
Front Side Bus Signal Groups
The front side bus signals have been combined into groups by buffer type. AGTL+ input signals
have differential input buffers, which use GTLREF as a reference level. In this document, the term
“AGTL+ Input” refers to the AGTL+ input group as well as the AGTL+ I/O group when receiving.
Similarly, “AGTL+ Output” refers to the AGTL+ output group as well as the AGTL+ I/O group
when driving. AGTL+ asynchronous outputs can become active anytime and include an active
pMOS pull-up transistor to assist during the first clock of a low-to-high voltage transition.
have differential input buffers, which use GTLREF as a reference level. In this document, the term
“AGTL+ Input” refers to the AGTL+ input group as well as the AGTL+ I/O group when receiving.
Similarly, “AGTL+ Output” refers to the AGTL+ output group as well as the AGTL+ I/O group
when driving. AGTL+ asynchronous outputs can become active anytime and include an active
pMOS pull-up transistor to assist during the first clock of a low-to-high voltage transition.
With the implementation of a source synchronous data bus comes the need to specify two sets of
timing parameters. One set is for common clock signals whose timings are specified with respect to
rising edge of BCLK0 (ADS#, HIT#, HITM#, etc.) and the second set is for the source
synchronous signals which are relative to their respective strobe lines (data and address) as well as
rising edge of BCLK0. Asynchronous signals are still present (A20M#, IGNNE#, etc.) and can
become active at any time during the clock cycle.
timing parameters. One set is for common clock signals whose timings are specified with respect to
rising edge of BCLK0 (ADS#, HIT#, HITM#, etc.) and the second set is for the source
synchronous signals which are relative to their respective strobe lines (data and address) as well as
rising edge of BCLK0. Asynchronous signals are still present (A20M#, IGNNE#, etc.) and can
become active at any time during the clock cycle.
identifies which signals are common
clock, source synchronous and asynchronous.