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UM1062 Datasheet(PDF) 11 Page - STMicroelectronics |
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UM1062 Datasheet(HTML) 11 Page - STMicroelectronics |
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11 / 31 page  UM1062 I/O connectors and test points Doc ID 018571 Rev 1 11/31 4 I/O connectors and test points This section provides a description of input/output connectors (Table 3), LED indicators and commands (Table 4), as well as the available test points (Table 5). Table 3. Connectors Table 4. LEDs Connector Label Description J3 Data and power input Power and Ethernet data input port J4 Data output Ethernet data output port J2 SP Wall adapter input. Use this input jack to connect auxiliary source without priority of the auxiliary source wrt PoE. J1 SA Wall adapter input. Use this input jack to connect auxiliary source with priority of the auxiliary source wrt PoE. J5 - Output voltage connector JM1 - Move the short on both jumpers at the same time: short between pin 1 and 2 when SA auxiliary source is used on J1 connector; short between pin 2 and 3 when SP auxiliary source is used on J2 connector JM2 - Move the short on both jumpers at the same time: short between pin 1 and 2 when SA auxiliary source is used on J1 connector; short between pin 2 and 3 when SP auxiliary source is used on J2 connector LED Label Description D20 AUX ON when an auxiliary source is applied to the board; proper selection of the auxiliary source connection is done with jumpers JM1 and JM2 D44 L1_OK ON when T2P is asserted. This is achieved when a 2-finger event is detected. If, after a successful PoE+ layer-1 classification, an auxiliary voltage is connected, the T2P signal is de-asserted and the L1_OK LED is turned off. D26 GREEN LED ON when output voltage is present. Table 5. Test points Test point Color Description TP1 Red Data transformer bias voltage TP2 Red Positive of auxiliary source AUX 1 on J2 TP3 Black Auxiliary source AUX 1 ground on J2 TP4 Red Input voltage VDD TP5 Red Secondary winding output TP6 Red Output voltage on J5 |
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