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2 Terms and Definitions

Table 1. Terms and Definitions

Lane​

A single channel of data between a transmitter and a receiver

  • Each lane physically represents a differential pair of signals that transmit serial data
  • Data for a converter channel may be transmitted on one or more lanes to trade off speed and number of differential pins/traces

A combination of one or more lanes.

  • Lanes are synchronized within a link, but multiple links may not be synchronized across each other
  • One data converter device may contain one or more links

Line/Lane Rate​

The data rate for a given link (usually expressed in Gigabits per second)

JESD204b​

Revision B of the JESD204 protocol

ILAS​

Initial Lane Alignment Sequence.

  • The transmitter sends the ILAS when bringing up the link in 8b/10b modes. Refer to the JESD204C specification for complete details.

JMODE / LMFS Mode​

JESD Mode of the data converter

  • Each JESD capable TI data converter can support multiple data transfer modes, each with varying JESD link parameters. The parameters for a particular mode are referred to as a ‘JMODE’ or an ‘LMFS’ mode.
  • Please refer to the device datasheet for more information

SYSREF​

This is the alignment signal used to synchronize the various Rx and Tx devices and links in a JESD system.