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ML310 User Guide www.xilinx.com 57
UG068 (v1.01) August 25, 2004 1-800-255-7778
Board Hardware
R
Jumpers
MGT VTRX Termination Voltage Jumpers, J10 and J11
The MGT receive termination voltage, VTRX, on the top and bottom MGTs are jumper
selectable via jumpers J10 (top) and J11 (bottom). The onboard regulated VTRX
termination voltage can be configured for AC or DC coupling, 1.8V or 2.5V respectively.
Table 2-26 shows the MGT VTRX voltage selections available on the ML310 board.
15 KBINH Tie this pin to GND to activate Keyboard inhibit, see
ALi M1536D+ data sheet for more details
16 VCC5V 5V ATX power available to user
17 ATX_IDELED_R ATX IDE access indicator, Tie this pin to Anode of
user’s LED and Cathode to GND
18 VCC5V 5V ATX power available to user
19 PWR_SUPPLY_ON Short this pin to GND to enable the ATX power
supply. Note: This pin cannot be controlled by a
momentary pulse.
20 GND Ground
21 PB_SYSACE_RESET Used to reset System ACE when driven low, as
described earlier, “System ACE Reset, SW1”
22 GND Ground
23 PB_FPGA_CPU_RESET Used to reset CPU when driven low, as described
earlier, “CPU Reset, SW2”
24 GND Ground
Table 2-25: Front Panel Interface connector, J23
J23
Pin
Schem Signal Description
Table 2-26: Jumper Selection for Top and Bottom MGT VTRX Voltages,J10/J11
MGTs VTRX Voltage
Jumper
(J10)
Jumper
(J11)
MGT RX
Coupling
All Top MGT_VTT 1.8V Shunt 2 - 3 Open AC
MGT_AVCC 2.5V Shunt 1 - 2 Open DC
All Bottom MGT_VTT 1.8V Open Shunt 2 - 3 AC
MGT_AVCC 2.5V Open Shunt 1- 2 DC
All MGT_VTT 1.8V Open Open Default
MGT_AVCC 2.5V Open Open Default