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Board Hardware
Note:
Manual is provided in the Data sheets section on the ML310 CDROM. Prior to installation please read
the Installation section of the Antec User's Manual which describes the red voltage switch power
setting on your Antec SL250S supply.
Check the red power supply voltage switch setting before installation. It should be the
same as your local power voltage (115V for North America, Japan, etc. and 230V for
Europe and many other countries). Change the voltage setting if necessary. Failure to take
this precaution could result in damage to your equipment and could void your warranty.
The ML310 requires a variety of voltages as is required by the different logic devices used
in the ML310 board design. The varieties of voltages are derived from the 5.0V supply and
regulated on board as shown in
Figure 2-17
supply.
VCC5V
Several voltage monitors, MC34161D, monitor all regulated power on the ML310 board.
Each of the voltage monitors is connected to power indicator LEDs as shown in
Figure
spec and will illuminate Green if the regulated supply voltage is nominal. Each regulated
supply voltage has a corresponding test point located near its indicator LED. Please review
the ML310 schematics and the MC34161D data sheet for more detailed information.
ML310 User Guide
UG068 (v1.01) August 25, 2004
An Antec, model SL250S, ATX Power Supply is delivered with your ML310. The Antec User's
shows the power distribution and regulation for the ATX-compatible power
J18
Pin 1
Pin 11
3.3-A
3.3-C
3.3-B
-12V
COM-A
COM-D
5V-A
PS-ON
VCC3V3_ATX
COM-B
COM-E
5V-B
COM-F
COM-C
COM-G
PW-OK
-5V
5VSB
5V-C
12V
5V-D
R185-188
Nostuff
U9
USB_AVC
(5V @ 500 mA)
MIC2076-2
U41
VCC3_PCI
(3.0V @
500mA)
LT1763CS8
U8
VCC1V5
(1.5V @
10A)
SC10A-DAC
Figure 2-17: ATX Power Distribution and Voltage Regulation
2-18. The indicator LEDs will illuminate RED if a regulated supply voltage is out of
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Figure
2-17.
NOTE: Typical ATX power supplies may not
produce a well-regulated 3.3V supply unless
VCC5V
there is a minimum load on the 5V output.
Therefore 3.3V is regulated separately for
VCC12V_N
on-board use.
VCC12V_P
VCC3V3
NOTE: These resistors (R185-188) allow the 3.3v regulator
to be nostuffed and 3.3v power taken directly from the ATX
supply in the case where it is well-behaved given the load
on the other outputs.
VCC12V_P
VCC3V3
U14
VCC3V3
(3.3V @ 10A)
SC10A-DAC
U10
VCC2V5
(2.5V @ 10A)
SC10A-DAC
U3
AC_AVDD
(5.0V @ 500mA)
LT1763CS8
U40
MGT_AVCC
(2.5V @ 3A)
LT1764AEQ
U34
MGT_VTT
(1.8V @ 500 mA)
LT1763CS8
U25
DDR_VTT
(1.25 V @ 3A)
VREF_DDR
ML655460
59
R
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