Board Design Recommendations
Microsemi Proprietary and Confidential UG0677 User Guide Revision 9.0 125
8 Board Design Recommendations
User must have knowledge of the following PCB design topics before designing a PCB that uses
PolarFire transceivers.
• Device interfacing
• Transmission line impedance and routing
• Power supply design filtering and distribution
• Component selection
• PCB layout and stack-up design
See UG0726: PolarFire FPGA Board Design User Guide for implementing transceiver designs on printed
circuit boards.
8.1 Transceiver Top-Level Pin Out
The transceiver quad includes four differential receive and transmit pairs. The reference clock to the
transmit PLLs can be provided either by the provided primary differential reference clock pins or by the
FPGA clock resources.
The transceiver pins, power pins, and associated clock are listed in the following table.
Table 39 • Transceiver Device Level Pin List
1
Pin Name
2
Direction Description
XCVR_#_TX3_P Output Transmit data. Transceiver differential positive output. Each
transceiver quad consists of four transmit+ signals.
XCVR_#_TX2_P Output Transmit data. Transceiver differential positive output. Each
transceiver quad consists of four transmit+ signals.
XCVR_#_TX1_P Output Transmit data. Transceiver differential positive output. Each
transceiver quad consists of four transmit+ signals.
XCVR_#_TX0_P Output Transmit data. Transceiver differential positive output. Each
transceiver quad consists of four transmit+ signals.
XCVR_#_TX3_N Output Transmit data. Transceiver differential negative output. Each
transceiver quad consists of four transmit− signals.
XCVR_#_TX2_N Output Transmit data. Transceiver differential negative output. Each
transceiver quad consists of four transmit− signals.
XCVR_#_TX1_N Output Transmit data. Transceiver differential negative output. Each
transceiver quad consists of four transmit− signals.
XCVR_#_TX0_N Output Transmit data. Transceiver differential negative output. Each
transceiver quad consists of four transmit− signals.
XCVR_#_RX3_P Input Receive data. Transceiver differential positive input. Each transceiver
quad consists of four receive+ signals.
XCVR_#_RX2_P Input Receive data. Transceiver differential positive input. Each transceiver
quad consists of four receive+ signals.
XCVR_#_RX1_P Input Receive data. Transceiver differential positive input. Each transceiver
quad consists of four receive+ signals.
XCVR_#_RX0_P Input Receive data. Transceiver differential positive input. Each transceiver
quad consists of four receive+ signals.
XCVR_#_RX3_N Input Receive data. Transceiver differential negative input. Each
transceiver quad consists of four receive− signals.
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