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TB-KU-xxx-ACDC8K Hardware User Manual
54
Rev. 1.03
For FMC 3 (J8):
*1: GBTCLK[0:1]_M2C_P/N
These clocks are connected to Quad 126 of the FPGA while this board provides an MMCX interface for
one pair of clocks on Quad 127. The other pair is provided by the system clock buffer.
*2: SCL, SDA
The board provides test points with pull-up options to enable I2C communication with the FPGA. By
default, the pull-ups are not populated.
*3: GA0, GA1
This board provides pull-up or pull-down options for these connections, by default they are floating.
*4: TDI, TDO
The JTAG TDO pin is connected with a loopback to TDI through a 0 ohm resistor that is not populated by
default.
*5: PG_C2M, PG_M2C, PRSNT_M2C_N
These all have a pull-up or pull-down resistor option. However, the resistors are not populated by default,
these pins are floating.
*6: Power Rails
This card provides a 12V output through the 12V0 pins and 3.3V output through the 3V3 and 3V3_AUX
pins. It is important to note that all the FMC connectors present on this board are equipped with a fuse on
the 12V0 rail. Lastly, the VADJ pins provide a 1.8V rail to FPGA mezzanine cards.
*7: VREF_A_M2C, VREF_B_M2C
These terminals can be monitored by test points
TP83
and
TP84
.
*8: VIO_B_M2C
Both pins J39 and K40 for this terminal can also be monitored by test point
TP81
.