GS81314PD18/36GK-133/120/106

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

Rev: 1.09 5/2016

5/39

© 2014, GSI Technology

ZQ

RQ to program driver and ODT impedances.

Input

RCS

an accurate current source for the PLL.

Input

MZT

ODT Mode Select — Sets the default ODT state globally for all input groups during power-up and reset.

Must be tied High or Low.

MZT = 0: disables ODT on all input groups, regardless of PZT[1:0].

MZT = 1: enables ODT on select input groups, as specified by PZT[1:0].

Note: The ODT state for each input group can be changed at any time via the Configuration Registers.

Input

PZT[1:0]

ODT Configuration Select — Set the default ODT state for various combinations of input groups during

power-up and reset, when MZT = 1. Must be tied High or Low.

PZT[1:0] = 00: enables ODT on write data only.

PZT[1:0] = 01: enables ODT on write data and input clocks.

PZT[1:0] = 10: enables ODT on write data, address, and control.

PZT[1:0] = 11: enables ODT on write data, input clocks, address, and control.

Note: The ODT state for each input group can be changed at any time via the Configuration Registers.

Input

Core Power Supply

—

I/O Power Supply

—

Input Reference Voltage — Input buffer reference voltage.

—

Ground

—

TCK

JTAG Clock — Weakly pulled Low internally.

Input

TMS

JTAG Mode Select — Weakly pulled High internally.

Input

TDI

JTAG Data Input — Weakly pulled High internally.

Input

TDO

JTAG Data Output

Output

MCH

Input

MCL

Input

NC

No Connect — There is no internal chip connection to these pins. They may be left unconnected, or tied/

driven High or Low.

—

Not Used Input — There is an internal chip connection to these input pins, but they are unused by the

device. They are pulled High internally. They may be left unconnected or tied/driven High. They should not

be tied/driven Low.

Input

Not Used Output — There is an internal chip connection to these output pins, but they are unused by the

device. The drivers are tri-stated internally. They should be left unconnected.

Output

Symbol

Description

Type