43
2.11
QSPF+ Ports
The 2x5 RS-422 expansion header is designed to perform communication between
boards. Users can use Terasic defined RS422-RJ45 board to translate RS-422 signal,
allowing a transmission speed of up to 26 Mbps.
Figure 2-14
shows the RS-422
application diagram.
Table 2-22
lists the RS-422 pin assignments, signal names and
functions.
Figure 2-14 Block Diagram of RS-422 application
Table 2-22 RS-422 Pin Assignments, Schematic Signal Names and Functions
Schematic
Signal Name
Description
I/O Standard
Arria 10 GX
Pin Number
RS422_DE
Driver Enable. A high on DE
enables the driver. A low input
will force the driver outputs into a
high impedance state.
1.8V
PIN_BD30
RS422_DIN
Receiver Output. The data is
send to FPGA.
PIN_BC28
RS422_DOUT
Driver Input. The data is sent
from FPGA.
PIN_BD29
RS422_RE_n
Receiver Enable. A low enables
the receiver. A high input forces
the receiver output into a high
impedance state.
PIN_BC30
2-12 2x4 GPIO Expansion Header
The 2x4, 2.0 mm pitch GPIO expansion header is designed to provide seven user pins
connected directly to the FPGA and one GND pin. Figure 2-15 shows the connection
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Страница 71: ...71 Figure 5 14 Si5340A Demo Figure 5 15 Si5340B Demo...
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Страница 111: ...111 Figure 8 5QSFP Transceiver Loopback Test in Progress Figure 8 6QSFP Transceiver Loopback Done...