
Page 5
Version 1.4 July 2002
MR16R1622(4/8/G)AF0
MR18R1622(4/8/G)AF0(1)
D
D
D
D
D
D
D
D
D
C
C
C
C
R
R
R
C
C
C
C
C
D
D
D
D
D
D
D
D
D
SIO0
SIO1
SCK
CMD
Vref
Direct RDRAM (256/288Mb)
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
U1
S
L
L
V
R
S
R
R
Vdd
Gnd
2 per
RDRAM device
0.22/0.1
μ
F
SCL
WP
SDA
A0 A1
SCL
SWP
SA0
SA1
SA2
SDA
Serial Presence Detect
Note 1. Rambus
Channel signals form a loop through
the RIMM module, with the exception of the SIO chain.
Note 2. See Serial Presence Detection Specification for
information on the SPD device and its contents.
D
D
D
D
D
D
D
D
D
C
C
C
C
R
R
R
C
C
C
U2
C
C
D
D
D
D
D
D
D
D
D
SIO0
SIO1
SCK
CMD
Vref
RDRAM Device(256/288Mb)
D
D
D
D
D
D
D
D
D
C
C
C
C
R
R
R
C
C
C
U3
C
C
D
D
D
D
D
D
D
D
D
SIO0
SIO1
SCK
CMD
Vref
RDRAM Device(256/288Mb)
D
D
D
D
D
D
D
D
D
C
C
C
C
R
R
R
C
C
C
UN
C
C
D
D
D
D
D
D
D
D
D
SIO0
SIO1
SCK
CMD
Vref
RDRAM Device(256/288Mb)
V
REF
Gnd
1 per
2 RDRAM devices
Plus one
Near Connector
V
CMOS
Gnd
1 per
2 RDRAM devices
0.22/0.1
μ
F
A2
U0
Vcc
SV
DD
0.22/0.1
μ
F
a
47K
Module
Capacity
N
512/576MB
16
256/288MB
8
128/144MB
4
64/72MB
2
a .
for 64/F : 800MHz products
0.22 μ
F : the other products
SV
DD
Gnd
0.22/0.1
μ
F
a
Figure 2: RIMM Module Functional Diagram