Arria® V Device Handbook: Volume 2: Transceivers

ID 683573
Date 5/29/2020
Public
Document Table of Contents

2.2.3.2. Receiver Bonded Channel Configurations

Receiver channels can only be bonded in configurations where rate match FIFOs are enabled. When bonded, the receiver PCS requires the parallel clock (recovered) and, the parallel clock from the central clock divider in channel 1 or 4.

For Arria V GZ devices, in bonded configurations the receiver 10G PCS uses only the parallel clock (recovered) for all its blocks.

Figure 68. Five Bonded Receiver Channels with Rate Match FIFO Enabled


Figure 69. Six Bonded Receiver Channels with Rate Match FIFO Enabled Using Fractional PLL All six channels in the transceiver bank are in a bonded configuration. This configuration is possible because the fractional PLL is used as a transmit PLL instead of a channel PLL in the transceiver bank. Using the fractional PLL enables you to configure the channel PLLs of both channels 1 and 4 as CDRs to perform receiver operations.


Figure 70. Six Channels Configured in Bonded Configuration Using ATX PLL for GZ Devices

All six channels in the transceiver bank in a bonded configuration. Six channel bonding is possible because the ATX PLL is used as a transmitter PLL instead of a channel PLL in the transceiver bank. Using the ATX PLL or fractional PLL allows you to use the channel PLLs of both channels 1 and 4 as CDRs to perform receiver operations.