EBR25UC8ABFD 데이터 시트보기 (PDF) - Elpida Memory, Inc

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EBR25UC8ABFD

256MB Direct Rambus™ DRAM RIMM™ Module

Elpida Memory, Inc 

Signal

RSCK

SA0

SA1

SA2

SCL

SDA

SIN

SOUT

SVDD

SWP

VCMOS

VDD

VREF

Module

Connector Pads

I/O

A59

I

B53

I

B55

I

B57

I

A53

I

A55

I/O

B36

I/O

A36

I/O

A56, B56

—

A57

I

A35, B35, A37, B37

—

A41, A42, A54, A58, B41,

B42, B54, B58

—

A51, B51

—

EBR25UC8ABFD

Type

VCMOS

SVDD

SVDD

SVDD

SVDD

SVDD

VCMOS

VCMOS

—

SVDD

—

—

—

Description

Serial clock input. Clock source used to read from and

write to the RDRAM control registers.

Serial Presence Detect Address 0.

Serial Presence Detect Address 1.

Serial Presence Detect Address 2.

Serial Presence Detect Clock.

Serial Presence Detect Data (Open Collector I/O).

Serial I/O for reading from and writing to the control

registers. Attaches to SIO0 of the first RDRAM on the

module.

Serial I/O for reading from and writing to the control

registers. Attaches to SIO1 of the last RDRAM on the

module.

SPD Voltage. Used for signals SCL, SDA, SWP, SA0,

SA1 and SA2.

Serial Presence Detect Write Protect (active high).

When low, the SPD can be written as well as read.

CMOS I/O Voltage. Used for signals CMD, SCK, SIN,

SOUT.

Supply voltage for the RDRAM core and interface

logic.

Logic threshold reference voltage for RSL signals.

Data Sheet E0317E20 (Ver. 2.0)

5

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