Part 2.2: Active Differential Crystal; Part 2.3: 200Mhz Active Differential Clock - Alinx ARTIX-7FPGA User Manual

each BANK of FPGA, including BANK0, BANK13~16, BANK34~35. On
AC7200 FPGA core board, BANK34 and BANK35 need to be connected to
DDR3, the voltage connection of BANK is 1.5V, and the voltage of other BANK
is 3.3V. The VCCO of BANK15 and BANK16 is powered by the LDO, and can
be changed by replacing the LDO chip. VMGTAVCC is the supply voltage of
the FPGA internal GTP transceiver, connected to 1.0V; VMGTAVTT is the
termination voltage of the GTP transceiver, connected to 1.2V.
The Artix-7 FPGA system requires that the power-up sequence be
powered by VCCINT, then VCCBRAM, then VCCAUX, and finally VCCO. If
VCCINT and VCCBRAM have the same voltage, they can be powered up at
the same time. The order of power outages is reversed. The power-up
sequence of the GTP transceiver is VCCINT, then VMGTAVCC, then
VMGTAVTT. If VCCINT and VMGTAVCC have the same voltage, they can be
powered up at the same time. The power-off sequence is just the opposite of
the power-on sequence.

Part 2.2: Active Differential Crystal

The AC7200 core board is equipped with two Sitime active differential
crystals, one is 200MHz, the model is SiT9102-200.00MHz, the system main
clock for FPGA and used to generate DDR3 control clock; the other is 125MHz,
model is SiT9102 -125MHz, reference clock input for GTP transceivers.

Part 2.3: 200Mhz Active Differential clock

G1 in Figure 3-1 is the 200M active differential crystal that provides the
development board system clock source. The crystal output is connected to the
BANK34 global clock pin MRCC (R4 and T4) of the FPGA. This 200Mhz
differential clock can be used to drive the user logic in the FPGA. Users can
configure the PLLs and DCMs inside the FPGA to generate clocks of different
frequencies.
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ARTIX-7 FPGA Development Board AX7203 User Manual
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