User manual

19 GR-UT699 Development Board
User Manual
2.9 Power Supply and Voltage Regulation
The board operates from a single +5V DC power supply input. On board regulators generate
the following voltages:
• +3.3V for the UT699 I/O voltage, memory chip and other peripherals
• +2.5V for UT699 Vcore voltage
All voltages +5V, +3.3V, ±12V are provided via the memory expansion connector interface
making feasible that user defined mezzanine boards can use these voltages.
If the Board is installed in a Compact PCI rack, the board can be configured by means of
jumpers such that the +5V, +3.3V, +12V and -12V are provided from the Compact PCI
backplane instead of the internal regulators.
2.10 Ethernet Interface
The UT699RH ASIC device incorporates a Ethernet controller with support for MII interface,
and the GR-UT699 Development Board has an Intel LXT971 10/100Mbit/s Ethernet PHY
transceiver and RJ45 connector are on board.
For more information on the registers and functionality of the Ethernet MAC+PHY device
please refer to the data sheet for the WJLXT971A device.
A 25MHz oscillator dedicated for this device is provided on the board.
The interrupt output of the Ethernet MDIO interface is connected to the PIO[4] input to the
UT699 ASIC. This can be disabled by removing jumper JP2 if necessary.
© Aeroflex Gaisler AB March 2013, Rev. 0.6
Figure 2-10: Power Regulation Configuration
REGULATOR
+3.3V
Vcore
(+2.5V for UT699RH core)
EXTERNAL POWER
SUPPLY, REGULATED
+5V, >1A
J13 POWER
2.1mm JACK
CPCI CONNECTOR
+5V PCI
REGULATOR
+3.3V PCI
1
1
2
3
2
3
JP12
JP13
+VIO PCI
n.c.
±12V PCI
MEZZ. CONN.
+3V3asic
(+3.3V for UT699RH)
JP14
JP15