Arria® V Device Handbook: Volume 2: Transceivers

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

2.2.2.1. Non-Bonded Channel Configurations

The channel clock path for non-bonded configurations can be driven by the x1, or the x6 and xN clock lines.
Table 44.   Clock Path for Non-Bonded ConfigurationsThe following table describes the clock path for non-bonded configuration with the ATX PLL, CMU PLL, and fPLL as TX PLL using various clock lines.
Clock Line Transmitter PLL Clock Path
x1 ATX PLL23 ATX PLL » x1 » individual clock divider » serializer
CMU CMU PLL » x1 » individual clock divider » serializer
fPLL fPLL » x1_fPLL » individual clock divider » serializer
x6, xN ATX PLL23 ATX PLL » central clock divider » x6 » xN » individual clock divider » serializer
CMU CMU PLL » central clock divider » x6 » xN » individual clock divider » serializer 24
fPLL fPLL » x1_fPLL » central clock divider » x6 » individual clock divider » serializer 24
Figure 55.  Three Non-Bonded Transmitter Channels Driven by CMU PLL using x1 Clock Line Within a Transceiver Bank


Figure 56. Three Non-Bonded Transmitter Channels Driven by fPLL using x1 Clock Line Within a Transceiver Bank


Figure 57. Three Non-Bonded Transmitter Channels Driven by ATX PLL using x1 Clock Line Within a Transceiver Bank for GZ Devices.


Figure 58.  Three Non-Bonded Transmitter Channels Driven by CMU PLL using x6 and xN Clock Lines Across Multiple Transceiver Banks
Figure 59. Three Non-Bonded Transmitter Channels Driven by fPLL using x6 and xN Clock Line Across Multiple Transceiver Banks

When the fPLL is used to drive more than three non-bonded channels, the channel where the central clock divider resides adjacent to the fPLL cannot be used as a transmitter. The fPLL uses a central clock divider to access the x6 clock network when driving more than three non-bonded channels, so the divider is no longer available to implement a transmitter. For xN non-bonded configurations, the ch 1 or ch 4 transceiver bank where the central clock divider resides cannot be used as a data channel since the parallel clock cannot be generated in this channel.

23 ATX PLL is available only for GZ devices.
24 Non-bonded channels within same bank as TX PLL are driven by clocks from x6 clock line, and channels in other banks are driven from xN clock line.