Synonyms for hstl or Related words with hstl
Examples of "hstl"
RGMII version 1.3 uses 2.5V CMOS, whereas RGMII version 2 uses 1.5V
High-speed transceiver logic or
is a technology-independent standard for signaling between integrated circuits. The nominal signaling range is 0 V to 1.5 V, though variations are allowed, and signals may be single-ended or differential. It is designed for operation beyond 180 MHz.
The Pseudo Open Drain (POD) drivers have a strong pull-down strength but a weaker pullup strength. A pure open-drain driver, by comparison, has no pullup strength except for leakage current: all the pull-up action is on the external termination resistor. This is why the term "pseudo" has to be used here: there is some pull-up on the driver side when output is at high state, the remaining pull-up strength is provided by parallel-terminating the receiver at the far end to the HIGH voltage, often using a switchable, on-die terminator instead of a separate resistor. The purpose of all this is to reduce the overall power demand compared to using both strong pullup and strong pull-down, as in drivers such as
. DDR4 memory uses POD12 drivers but with the same driver strength (34 Ω/48 Ω) for pull-down (RonPd) and pull-up (RonPu). The term POD in DDR4 referring only for termination type that is only parallel pull-up w/o the pull-down termination at the far end. The reference point (VREF) for the input is not half-supply as was in DDR3 and may be higher.
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