Datasheet

Rev. 1.2 / Jul. 2013 7

DQS0–DQS8

DQS

0–DQS8

SSTL

Differential

crossing

Data strobe for input and output data.

SA0–SA2 —

These signals are tied at the system planar to either V

SS or VDDSPD to con-

figure the serial SPD EEPROM address range.

SDA —

This bidirectional pin is used to transfer data into or out of the SPD

EEPROM. An external resistor may be connected from the SDA bus line to

DDSPD to act as a pullup on the system board.

SCL —

This signal is used to clock data into and out of the SPD EEPROM. An

external resistor may be connected from the SCL bus time to V

DDSPD to act

as a pullup on the system board.

VDDSPD Supply

Power supply for SPD EEPROM. This supply is separate from the V

DD/VDDQ

power plane. EEPROM supply is operable from 3.0V to 3.6V.

Symbol Type Polarity Function