| 摘要 |
<p>A tuneable buffer circuit for use in a clock tree has multiple buffers (40, 42) in parallel, each buffer having a grounding function (48), and also a bypass switch (46) in parallel with the buffers (40, 42). The circuit has a normal mode of one buffer connected into circuit, a first low voltage mode of multiple buffers connected into circuit in parallel without grounding function, a second low voltage mode of the buffers connected into circuit in parallel with grounding function and a bypass mode.</p> |
