Microsemi PD-IM-7401, Руководство пользователя

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PD-IM-7401 Evaluation Board - User Guide
Copyright © 2009
Microsemi
Page 8
Rev. 1.0, 8-Apr-10 Analog Mixed Signal Group
2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308
3.3.1 Reset Button
The dedicated Reset button SW #1 (see Figure 4) is utilized to reset the PD69101 PoE controllers.
Figure 4: Reset Button (SW #3)
3.3.2 Configuration Switches
Five configuration switches are utilized to configure the PD69101 PoE controllers operations:
ƒ
Two ON/OFF switches are utilized to enable/disable the Master and the Slave (SW #1 and
SW #2) (see Table 3).
ƒ One switch is utilized to select the detection method (SW #3):
o
Resistor detection only: IEEE802.3af and IEEE802.3at compliant
o
Resistor and legacy detection
ƒ Two switches are utilized the select the current capability, as shown in Table 4.
o
350 mA continual current: IEEE802.3af compliant
o
600 mA continual current: IEEE802.3at compliant
o
720 mA continual current: IEEE802.3at high power
o
1000 mA continual current: Very high power capability for future applications
Note
: The assembled pulse transformer is not designed to support 1 A of current. To support currents of 1 A,
resistors R9, R10, R11, R13, R15, R16, R17, and R18 (0 Ω ) must be assembled to bypass the PT. In this
setup the data in (CON2) is
not
supported.
Table 3: On/Off and Resistor Detection
Table 4: Current Capability