Lines Matching +full:pin +full:- +full:dependent
1 .. SPDX-License-Identifier: GPL-2.0
9 eight-pin modular jack, commonly known as the Ethernet RJ45 port. This
14 ---------------------------
19 - Section "33.2.3 PI pin assignments" covers the pin assignments for PoE
21 - Section "145.2.4 PSE PI" addresses the configuration for PoE systems that
25 -------------------------------
31 two pairs of wires, SPE operates on a simpler model due to its single-pair
32 design. As a result, the complexities of choosing between alternative pin
33 assignments for power delivery, as described in the PSE PI for multi-pair
37 --------------------
47 ----------------------------
49 - **Alternative A:** Utilizes RJ45 conductors 1, 2, 3 and 6. In either case of
52 (Medium Dependent Interface) or MDI-X (Medium Dependent Interface Crossover)
55 - **Alternative B:** Utilizes RJ45 conductors 4, 5, 7 and 8. In case of
62 Table 145-3 PSE Pinout Alternatives
63 -----------------------------------
65 The following table outlines the pin configurations for both Alternative A and
68 +------------+-------------------+-----------------+-----------------+-----------------+
70 | | (MDI-X) | (MDI) | (X) | (S) |
72 | 1 | Negative V | Positive V | - | - |
73 +------------+-------------------+-----------------+-----------------+-----------------+
74 | 2 | Negative V | Positive V | - | - |
75 +------------+-------------------+-----------------+-----------------+-----------------+
76 | 3 | Positive V | Negative V | - | - |
77 +------------+-------------------+-----------------+-----------------+-----------------+
78 | 4 | - | - | Negative V | Positive V |
79 +------------+-------------------+-----------------+-----------------+-----------------+
80 | 5 | - | - | Negative V | Positive V |
81 +------------+-------------------+-----------------+-----------------+-----------------+
82 | 6 | Positive V | Negative V | - | - |
83 +------------+-------------------+-----------------+-----------------+-----------------+
84 | 7 | - | - | Positive V | Negative V |
85 +------------+-------------------+-----------------+-----------------+-----------------+
86 | 8 | - | - | Positive V | Negative V |
87 +------------+-------------------+-----------------+-----------------+-----------------+
90 - "Positive V" and "Negative V" indicate the voltage polarity for each pin.
91 - "-" indicates that the pin is not used for power delivery in that
95 ----------------------
100 +---------+---------------+---------------------+-----------------------+
105 +---------+---------------+---------------------+-----------------------+
107 +---------+---------------+---------------------+-----------------------+
109 +---------+---------------+---------------------+-----------------------+
112 - "Direct" indicate a variant where the power is injected directly to pairs
114 - "Phantom" indicate power path over coils/magnetics as it is done for
122 -----------------------------------------------
131 .. code-block::
133 +--------------------------+
137 +--+--+--+--+--+--+--+--+--+ +-------------+
139 | | | | | | | o-------------------+ |
140 | | | | | | o--|-------------------+ +<--- PSE 1
141 | | | | | o--|--|-------------------+ |
142 | | | | o--|--|--|-------------------+ |
143 | | | o--|--|--|--|-------------------+ PSE PI |
144 | | o--|--|--|--|--|-------------------+ |
145 | o--|--|--|--|--|--|-------------------+ +<--- PSE 2 (optional)
146 o--|--|--|--|--|--|--|-------------------+ |
148 +--+--+--+--+--+--+--+--+--+ +-------------+
152 +--------------------------+
155 ---------------------------------------------
160 power delivery through the data-carrying pairs of an Ethernet cable, suitable
161 for either MDI or MDI-X configurations, albeit supporting one variation at a
164 .. code-block::
166 +-------------+
168 8 -----+ +-------------+
169 7 -----+ Rail 1 |
170 6 -----+------+----------------------+
171 5 -----+ | |
172 4 -----+ | Rail 2 | PSE 1
173 3 -----+------/ +------------+
174 2 -----+--+-------------/ |
175 1 -----+--/ +-------------+
177 +-------------+
181 - Pins 1 and 2, as well as pins 3 and 6, are utilized for power delivery in
184 - Rail 1 and Rail 2 represent the positive and negative voltage rails, with
188 compatibility with both MDI and MDI-X configurations.
192 additional power delivery capabilities such as 2-pair or 4-pair power delivery.
194 .. code-block::
196 +-------------+
198 | +---+
199 8 -----+--------+ | +-------------+
200 7 -----+--------+ | Rail 1 |
201 6 -----+--------+ +-----------------+
202 5 -----+--------+ | |
203 4 -----+--------+ | Rail 2 | PSE 1
204 3 -----+--------+ +----------------+
205 2 -----+--------+ | |
206 1 -----+--------+ | +-------------+
207 | +---+
208 +-------------+
211 -----------------------------------------------------------
216 this decision-making process:
219 In a straightforward scenario, the PSE PI setup involves a direct, one-to-one
250 ----------------------------------
260 - *Description:* Identifies the pairs used for power delivery in the
262 - *Necessity:* Essential to ensure the correct pairs are powered according
264 - *PSE Controller Node:* Typically lacks details on physical pair usage,
269 - *Description:* Specifies the polarity (positive or negative) for each
271 - *Necessity:* Critical for safe and effective power transmission to PDs.
272 - *PSE Controller Node:* Polarity management may exceed the standard
277 - *Description:* Details the association of PSE cells with Ethernet ports or
278 pairs in multi-cell configurations.
279 - *Necessity:* Allows for optimized power resource allocation in complex
281 - *PSE Controller Node:* Controllers may not manage cell associations
286 - *Description:* Lists the PoE standards and configurations supported by the
288 - *Necessity:* Ensures system compatibility with various PDs and adherence
290 - *PSE Controller Node:* Specific capabilities may depend on the overall PSE
296 - *Description:* Outlines additional protection mechanisms, such as
298 - *Necessity:* Provides extra safety and stability, complementing PSE
300 - *PSE Controller Node:* Some protections may be implemented via
301 board-specific hardware or algorithms external to the controller.