Lines Matching +full:3 +full:- +full:wire
1 .. SPDX-License-Identifier: GPL-2.0-only
30 ------------------
35 CS mode, 3-wire turbo mode
38 Datasheet "3-wire" mode is what most resembles standard SPI connection which,
41 "CS Mode, 3-Wire Turbo Mode" connection in datasheets.
42 NOTE: The datasheet definition of 3-wire mode for the AD4000 series is NOT the
43 same of standard spi-3wire mode.
47 Omit the ``adi,sdi-pin`` property in device tree to select this mode.
51 +-------------+
52 + ----------------------------------| SDO |
54 | +-------------------| CS |
56 | +--------------------+ | HOST |
58 +--->| SDI AD4000 SDO |-------->| SDI |
60 +--------------------+ | |
62 +--------------------| SCLK |
63 +-------------+
65 CS mode, 3-wire, without busy indicator
68 Another wiring configuration supported as "3-wire" mode has the SDI pin
69 hard-wired to digital input/output interface supply (VIO). In this setup, the
71 is not possible. This connection mode saves one wire and works with any SPI
74 Set the ``adi,sdi-pin`` device tree property to ``"high"`` to select this mode.
78 +-------------+
79 +--------------------| CS |
81 VIO +--------------------+ | HOST |
83 +--->| SDI AD4000 SDO |-------->| SDI |
85 +--------------------+ | |
87 +--------------------| SCLK |
88 +-------------+
95 +-------------+
96 +--------------------| GPIO |
98 VIO +--------------------+ | HOST |
100 +--->| SDI AD4000 SDO |-------->| SDI |
102 +--------------------+ | |
104 +--------------------| SCLK |
105 +-------------+
107 CS mode, 4-wire without busy indicator
110 In datasheet "4-wire" mode, the controller CS line is connected to the ADC SDI
114 Set ``adi,sdi-pin`` to ``"cs"`` to select this mode.
119 +-------------+
120 + ----------------------------------| CS |
122 | +-------------------| GPIO |
124 | +--------------------+ | HOST |
126 +--->| SDI AD4000 SDO |-------->| SDI |
128 +--------------------+ | |
130 +--------------------| SCLK |
131 +-------------+