1.6.2. Agilex™ 7 R-Tile Transceiver Pins
Pin Name | Pin Functions | Pin Description | Connection Guidelines |
---|---|---|---|
IO_RCOMP_0_P_GXR | Input | External biasing resistor for R-Tile. | Connect a 150 Ω 1% resistor between the IO_RCOMP_0_N_GXR pin and IO_RCOMP_0_P_GXR pin of each R-Tile bank. RCOMP_P and RCOMP_N total trace routing (package and board) resistance is less than 0.500 Ω. In the PCB layout, do not route traces next to high-speed clock or data aggressors. You are required to keep the maximum capacitance on RCOMP_P less than 5.0 pF. IO_ROMP_1_P and IO_ROMP_1_N are only available on the Agilex™ 7 AGI041 device. If this tile is unused, leave these pins floating. |
IO_RCOMP_0_N_GXR | |||
IO_RCOMP_1_P_GXR | Input | External biasing resistor for R-Tile. |
|
IO_RCOMP_1_N_GXR | |||
I_PIN_PERST_N_GXR | Input | PCI Express* ( PCIe* ) Platform reset pin. | The usage of this pin is different between the Agilex™ 7 AGI041 device and other Agilex™ 7 FPGA devices. For Agilex™ 7 I-series devices except for the Agilex™ 7 AGI041 device:
For Agilex™ 7 AGI041 device:
If the tile is unused for both Agilex™ 7 AGI041 and other Agilex™ 7 devices, tie to GND. |
I_PIN_PERST[0,1]_N_GXR | Input | PCI Express* ( PCIe* ) PORT0 and PORT1 reset pin. |
Active low. These two pins are only available in the Agilex™ 7 AGI041 device.
|
REFCLK_GXR[R,L][14A,14C,15A,15C]_CH[0,1]P | Input | Standard PCIe* High Speed Current Steering Logic (HCSL) reference clock input pins, specific to the R-Tile transceivers on the left (L) side or right (R) side of the device. For more information about the supported pins, refer to the device pin-out file. |
It supports HCSL I/O standard only, must be DC coupled. For all Agilex™ 7 I-series devices, including the Agilex™ 7 AGI041 device:
Leave these pins floating if unused. |
REFCLK_GXR[R,L][14A,14C,15A,15C]_CH[0,1]N | |||
REFCLK_GXR[R,L] [14A,14C,15C]_CH2P | Input | Standard PCIe* High Speed Current Steering Logic (HCSL) reference clock input pins, specific to the FPGA core fabric. For more information about the supported pins, refer to the device pin-out file. |
These two pins are only available in the Agilex™ 7 AGI041 device. It supports HCSL I/O standard only, must be DC coupled.
Leave these pins floating if unused. |
REFCLK_GXR[R,L] [14A,14C,15C]_CH2N | |||
GXR[R,L][14A,14C,15A,15C]_RX_CH[0:15]P | Input | Transceiver receiver pins, specific to the R-Tile transceivers on the left (L) side or right (R) side of the device. For PCIe* Gen 5 mode, use the lower 16 bits [15:0]. These pins also support NRZ encoding up to 32 Gbps. For more information about the supported pins, refer to the device pin-out file. |
Leave these pins floating if unused. |
GXR[R,L][14A,14C,15A,15C]_RX_CH[0:15]N | |||
GXR[R,L][14A,14C,15A,15C]_TX_CH[0:15]P | Output | Transceiver transmitter pins, specific to the R-Tile transceivers on the left (L) side or right (R) side of the device. For PCIe* Gen 5 mode, use the lower 16 bits [15:0]. These pins also support NRZ encoding up to 32 Gbps. For more information about the supported pins, refer to the device pin-out file. |
Transmitter pins must be AC coupled. Leave these pins floating if unused. |
GXR[R,L][14A,14C,15A,15C]_TX_CH[0:15]N |