Detailed Description
Monitoring Voltage and Current
Voltage and current monitoring and control are available for selected power rails through
Texas Instruments' Fusion Digital Power graphical user interface (GUI). Both onboard TI
power controllers are wired to the same PMBus. The PMBus connector, J6, is provided for
use with the TI USB Interface Adapter PMBus pod and associated TI GUI.
References
More information about the power system components used by the SP623 board are
available from the Texas Instruments digital power website at:
GTP Transceiver Power Module
The GTP transceiver power module supplies MGTAVCC and MGTAVTT voltages to the
FPGA GTP transceivers. Three power modules are provided with the SP623 board. Any
one of the three modules can be plugged into connectors J34 and J179 in the outlined and
labeled power module location shown in Figure 1-4 .
X-Ref Target - Figure 1-4
UG751_c1_04_041510
Figure 1-4:
Mounting Location, GTP Transceiver Power Module
Table 1-2 describes the nominal voltage values for the MGTAVCC and MGTAVTT power
rails. It also lists the maximum current ratings for each rail supplied by either module
included with the SP623 board.
Table 1-2:
GTP Transceiver Power Module
Maximum Current Rating
Regulation Jumper
Power Supply
Rail Net Name
MGTAVCC
MGTAVTT
Typical
Voltage
1.2V
1.2V
Linear
Technology
Module
16A
12A
Texas
Instruments
Module
8A
6A
Intersil
Module
8A
6A
Linear
Technology
Module
JP1
JP2
Texas
Instruments
Module
N/A
N/A
Intersil
Module
N/A
N/A
External
Supply
Jack
J178
J189
The GTP transceiver power rails also have corresponding input voltage jacks to supply
each voltage independently from a bench-top power supply (See External Supply Jack
column in Table 1-2 ). To supply power externally to one or both rails when the
SP623 Board User Guide
UG751 (v1.1) September 15, 2010
13
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