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PD-3524G 데이터시트(PDF) 8 Page - Microsemi Corporation |
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PD-3524G 데이터시트(HTML) 8 Page - Microsemi Corporation |
8 / 19 page P Poow weerrD Dssiinnee 33550000G G SSeerriieess Copyright © 2009 Microsemi 8 Rev 1.1 27-Jul-09 Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 indicating an out-of-power state. This port does not deliver power. Power distribution is based on “first come, first served” logic. Sometimes, connected and operating PDs significantly increase or suddenly raise their power requirements. If the power required exceeds the power available, the Midspan starts turning off ports, starting from the last port down, until the total power is once again under the maximum available limit. 2.2 10/100/1000BASE-TX Ports Definition The following sections detail the 35XXG ports and their functions 2.2.1 Data Input Ports The Midspan has 6, 12 or 24 x 10/100/1000Base-T Data In ports, located on the PoE front panel (Figure 2-1), configured in a non-crossover manner (straight-wired). These ports are designed to carry Ethernet data only (Tx/Rx) over: Standard 4-wire pairs (pins 1/2, 3/6, 4/5 and 7/8) (1000Base-T) 2-wire pairs (pins 1/2 and 3/6) (10/100Base-T). 2.2.2 Data & Power Output Ports The Midspan has 6, 12 or 24 x 10/100/1000Base-T Data & Power Out ports, located on the front panel (Figure 2-1: -1). These ports are configured in a non-crossover manner (straight-wired) and are designed to carry Ethernet data over: Standard 4-wire pairs (pins 1/2, 3/6, 4/5 and 7/8) (1000Base-T) 2-wire pairs (pins 1/2 and 3/6) (10/100Base- T) and DC power over the spare pairs (pins 4/5 and 7/8). |
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