Application Information
The TQMC700 is a VITA93.0 compatible single-width
QMC offering a user programmable AMD Artix 7 7A50T
FPGA.
The TQMC700 provides 16 ESD-protected 5V-tolerant
TTL lines. All I/O lines are individually programmable as
input or output. TTL I/O lines can be set to high, low, or
tristate. Each TTL I/O line has a pull-resistor to a common
programmable pull-up voltage that can be set to +3.3 V,
+5 V and GND.
The 18 bit ADC offers 8 input channels, each of them has
a sampling rate of up to 1 Msps. Each channel can be
operated in bipolar single-ended, unipolar single-ended
and bipolar differential mode. In the single-ended modes it
offers software selectable input voltage ranges of 0-5 V, 0
10 V, 0-12.5 V, ±2.5 V, ±5 V, ±6.25 V, ±10 V and ±12.5V.
In differential mode the input voltages are selectable
between ±5 V, ±10 V, ±12.5 V and ±20 V. There is a
flexible digital filter offering a oversampling ratio up to 256.
The DAC offers 4 channels of 16 bit analog outputs with
software selectable output voltage ranges of 0-5 V, 0-10
V, 0-10.8 V, ±5 V, ±10 V or ±10.8 V. The output voltage
range can be individually set per channel. The conversion
time is typ. 10 μs and the DAC outputs are capable to
drive a load of 2 kΩ, with a capacitance up to 4000 pF.
Each TQMC700 is factory calibrated. The calibration
information is stored in an on-board serial EEPROM
unique to each TQMC700 module.
The User FPGA is configured by a SPI flash. An in-circuit
debugging option is available via the QMC’s JTAG
interface for read back and real-time debugging of the
FPGA design (using the Vivado ILA).
User applications for the TQMC700 with 7A50T FPGA can
be developed using the design software Vivado Design
Suite HL WebPACK Edition.
TEWS offers a well-documented basic FPGA Example
Application design. It includes a constraints file with all
necessary pin assignments and basic timing constraints.
The example design covers the main functionalities of the
TQMC700. It implements PCIe to register mapping and
basic I/O. It comes as a Xilinx Vivado Design Suite project
with source code and as a ready-to-download bit stream.
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