MC-4R64CPE6C Datasheet, PDF (6/16 Pages) NEC – Direct Rambus DRAM RIMM Module 64M-BYTE 32M-WORD x 16-BIT

MC-4R64CPE6C
Signal
RSCK
I/O
Type
I
VCMOS
SA0
I
SVDD
SA1
SA2
SCL
SDA
SIN
E_SOUT
SVDD
O_SWP
VCMOS
L ^VDD
I
SVDD
I
SVDD
I
SVDD
I/O
SVDD
I/O
VCMOS
I/O
VCMOS
—
—
I
SVDD
—
—
—
—
VREF
—
—
Description
(2/2)
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.
Product ^{Logic threshold reference voltage for RSL signals.}
6
Preliminary Data Sheet E0051N11