JEDEC JESD8-21C

This standard defines the dc and ac single-ended (data) and differential (clock) operating conditions, I/O impedance's, and the termination and calibration scheme for 1.35 V Pseudo Open Drain I/Os. The 1.35 V Pseudo Open Drain interface, also known as POD135, is primarily used to communicate with GDDR5 or GDDR5M SGRAM devices. Item 146.01B