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TPMC632 User Manual Issue 1.0.6
Page 30 of 49
6.2.2 Differential I/O Interface
Each of the 32 (TPMC632-x1R) or 16 (TPMC632-x2R) differential I/O line pairs is connected on the one side
with an input, output and output enable pin at the XILINX FPGA. On the other side connected to a
MAX3078E, an ESD-protected RS485/RS422 transceiver and a 120
Ω
termination resistor.
See the following figure for more information of the differential I/O circuitry.
XILINX
FPGA
FPGA_OUTx
FPGA_OEx
FPGA_INx
120R
MAX3078E
1 Differential Line
X1 / P14
Figure 6-3 : Differential I/O Interface
6.2.3 Multipoint-LVDS Interface
Each of the 32 (TPMC632-x3R) or 16 (TPMC632-x4R) M-LVDS I/O line pairs is connected on the one side
with an input, output and output enable pin at the XILINX FPGA and on the other side connected to a M-
LVDS transceiver and a 100
Ω
termination resistor.
See the following figure for more information of the M-LVDS I/O circuitry.
XILINX
FPGA
FPGA_OUTx
FPGA_OEx
FPGA_INx
100R
SN65MLVD206
1 M-LVDS Line
X1 / P14
Figure 6-4 : M-LVDS I/O Interface
Please consider that each TPMC632 M-LVDS line has his own termination. If more than four lines are
connected together some termination resistors must be removed.
The actual data transmission rate depends on different factors like connection, cable length, fpga
design etc.