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ML623 Board User Guide
UG724 (v1.1) September 15, 2010
Chapter 1:
ML623 Board Features and Operation
Power Management
Numbers 1a through 1h refer to the callouts in
Figure 1-2
:
1a
: Main power switch (SW1)
1b
: 12V Mini-Fit connector (J122)
1c
: 12V ATX connector (J141)
1d
: Power regulation jumpers (J30, J31, J33, J102, J104, J105)
1e
: Regulation inhibit (J14, J19)
1f
:
External power supply jacks (J98, J173, J174, J175, J177, J178, J189, J220, J223, J227, J234)
1g
: TI PMBus cable connector (J6)
1h
: GTX transceiver power supply module
Board Power and Switch
The ML623 board is powered through J122 using the 12V AC adapter included with the
board. J122 is a 6-pin (2 x 3) right angle Mini-Fit type connector.
Power can also be provided through:
•
Connector J141 which accepts an ATX hard disk 4-pin power plug
•
Jack J234 which can be used to connect to a bench-top power supply
Caution!
Do NOT plug a PC ATX power supply 6-pin connector into J122 on the ML623 board.
The ATX 6-pin connector has a different pinout than J122. Connecting an ATX 6-pin connector
into J122 will damage the ML623 board and void the board warranty.
Caution!
Do NOT apply power to J122 and connectors J141 and/or J234 at the same time.
Doing so will damage the ML623 board.
The ML623 board power is turned on or off by switch SW1. When the switch is in the ON
position, power is applied to the board and a green LED (DS36) illuminates.