6.2.2 JESD204B
(Ask a Question)JESD204B version increases the supported lane data rates to 12.5 Gbps and divides devices into three different speed grades. The source and load impedance is the same for all three speed grades being defined as 100Ω. The first speed grade aligns with the lane data rates from the JESD204 and JESD204A versions of the standard, and defines the electrical interface for lane data rates up to 3.125 Gbps. The second speed grade in JESD204B defines the electrical interface for lane data rates up to 6.375 Gbps. This speed grade lowers the minimum differential voltage level to 400 mV peak-to-peak, down from 500 mV peak-to-peak for the first speed grade. The third speed grade in JESD204B defines the electrical interface for lane data rates up to 12.5 Gbps.
The following figure shows the connectivity between the device and the JESD204B interface.
