Lines Matching +full:pps +full:- +full:channel

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72 EIA RS-232C (CCITT V.24) serial communications interface.
112 It contains the bus attachments and the low-level interrupt handler.
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154 .Sh Pulse Per Second (PPS) Timing Interface
157 driver can capture PPS timing information as defined in RFC 2783.
161 To use the PPS capture feature with
170 tunable configures the PPS capture mode for all uart devices;
175 sysctl configures the PPS capture mode for a specific uart device;
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195 Invert the pulse (RS-232 logic low = ASSERT, high = CLEAR).
200 Add the narrow pulse option when the incoming PPS pulse width is small
215 level signals, or when the PPS source emits inverted pulses.
216 RFC 2783 defines an ASSERT event as a higher-voltage line level, and a CLEAR
217 event as a lower-voltage line level, in the context of the RS-232 protocol.
218 The modem control signals on a TTL-level connection are typically
219 inverted from the RS-232 levels.
220 For example, carrier presence is indicated by a high signal on an RS-232
223 TTL and RS-232 line levels in most hardware designs.
224 Generally speaking, a connection to a DB-9 style connector is an RS-232
226 A connection to header pins or an edge-connector on an embedded board
231 driver also supports an initial-state and a lock-state control
234 from those of the corresponding initial-state device
238 in the normal way on the initial-state devices to program
245 on the lock-state device.
247 may be locked by setting the corresponding value in the lock-state
251 on the initial-state device and
253 on the lock-state device.
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286 Enable the so-called
289 For NS 16550-compatible devices, this will use heuristics to ensure that the
291 DesignWare-based UARTs need this due to a design flaw in the UART.
304 driver to not program the baud rate divisor and use the hardware as-is.
306 Channel.
308 Has no effect on UARTs with only one channel.
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328 Specifies the physical address of a memory-mapped UART.
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363 corresponding callin initial-state and lock-state devices
369 corresponding callout initial-state and lock-state devices