Lines Matching full:open
51 other value (notably, "open drain" signaling).
92 Open Drain and Open Source
94 Sometimes shared signals need to use "open drain" (where only the low signal
95 level is actually driven), or "open source" (where only the high signal level is
96 driven) signaling. That term applies to CMOS transistors; "open collector" is
101 One common example of an open drain signal is a shared active-low IRQ line.
102 Also, bidirectional data bus signals sometimes use open drain signals.
104 Some GPIO controllers directly support open drain and open source outputs; many
105 don't. When you need open drain signaling but your hardware doesn't directly
115 The same logic can be applied to emulate open source signaling, by driving the
116 high signal and configuring the GPIO as input for low. This open drain/open