1.2.1. Clock and PLL Pins
Pin Name | Pin Functions | Pin Description | Connection Guidelines |
---|---|---|---|
CLK_[T,B]_2[A,B]_[0:1][p,n] CLK_[T,B]_3[A,B]_[0:1][p,n] |
I/O, Clock Input | Dual-purpose I/O pins that can be used for data inputs or outputs. On-chip termination such as differential input termination (RD OCT), parallel termination (RT OCT), and series termination (RS OCT) are supported on these pins. For more information about the supported pins, refer to the device pin-out file. When you do not use these pins as dedicated clock pins, you can use them as regular I/O pins. Supported I/O standards:
These pins support the programmable pull-up resistor. For more information, refer to the Agilex™ 5 FPGAs and SoCs Device Data Sheet . |
If the entire HSIO bank is unused, you may leave these pins floating, connected to VCCIO_PIO, or connected to a tri-stated upstream or downstream I/O pin. If the unused pins reside in an active HSIO bank, you may leave these pins floating or connected to a tri-stated upstream or downstream I/O pin. |
PLL_[2][A,B]_[T,B]_FB[0:1] PLL_[3][A,B]_[T,B]_FB[0:1] |
I/O, Clock Input | Dual-purpose I/O pins that can be used as single-ended inputs, single-ended outputs, or external feedback input pins. For more information about the supported pins, refer to the device pin-out file. Supported I/O standards:
These pins support the programmable pull-up resistor. For more information, refer to the Agilex™ 5 FPGAs and SoCs Device Data Sheet . |
If the entire HSIO bank is unused, you may leave these pins floating, connected to VCCIO_PIO, or connected to a tri-stated upstream or downstream I/O pin. If the unused pins reside in an active HSIO bank, you may leave these pins floating or connected to a tri-stated upstream or downstream I/O pin. |
PLL_[2][A,B]_[T,B]_CLKOUT[0:1][p,n] PLL_[3][A,B]_[T,B]_CLKOUT[0:1][p,n] |
I/O, Clock Output | I/O pins that can be used as two single-ended clock output pins or one differential clock output pair. For more information about the supported pins, refer to the device pin-out file. Supported I/O standards:
These pins support the programmable pull-up resistor. For more information, refer to the Agilex™ 5 FPGAs and SoCs Device Data Sheet . |
If the entire HSIO bank is unused, you may leave these pins floating, connected to VCCIO_PIO, or connected to a tri-stated upstream or downstream I/O pin. If the unused pins reside in an active HSIO bank, you may leave these pins floating or connected to a tri-stated upstream or downstream I/O pin. |