RIMM
TM
Module
with 256/288Mb RDRAMs Preliminary
Revision History
* Rev. 0.95
Date : 2001.07.23
1. Page2, 7, 8, 10, 12 : Add 2D RIMM part
Rev. 0.95 / July.01
1
RIMM
Overview
TM
Module
with 256/288Mb RDRAMs Preliminary
Key Timing Parameters/Part Numbers
The following table lists the frequency and latency bins
available from RIMM modules.
Table 1: Part Number by Frequency and Latency
I/O Freq.
Organization
MHz
t rac (
Row
Access
Time
) ns
‘
The Rambus
®
RIMM
TM
module is a general purpose
high-performance memory subsystem suitable for use
in a broad range of applications including computer
memory, personal computers, workstations, and other
applications where high bandwidth and low latency are
required.
The Rambus RIMM module consist of 256/288Mb
Direct Rambus DRAM devices. These are extremely
high-speed CMOS DRAMs organized as 16M words
by 16/18 bits. The use of Rambus Signaling Level
(RSL) technology permits 600MHz ,711MHz or
800MHz transfer rates while using conventional
system and board design technologies. RDRAM
devices are capable of sustained data transfers at 1.25
ns per two bytes (10ns per 16 bytes).
The RDRAM architecture enables the highest
sustained bandwidth for multiple, simultaneous
randomly addressed memory transactions. The
separate control and data buses with independent row
and column control yield over 95% bus efficiency. The
Direct RDRAM's 32-banks architecture supports up to
four simultaneous transactions per device.
Part Number
HYMR23216(18)H-653
HYMR23216(18)H-745
HYMR23216(18)H-845
HYMR23216(18)H-840
HYMR26416(18)H-653
HYMR26416(18)H-745
HYMR26416(18)H-845
HYMR26416(18)H-840
HYMR212816(18)H-653
HYMR212816(18)H-745
HYMR212816(18)H-845
HYMR212816(18)H-840
HYMR225616(18)H-653
HYMR225616(18)H-745
HYMR225616(18)H-845
HYMR225616(18)H-840
32M x 16/18
32M x 16/18
32M x 16/18
32M x 16/18
64M x 16/18
64M x 16/18
64M x 16/18
64M x 16/18
128M x 16/18
128M x 16/18
128M x 16/18
128M x 16/18
256M x 16/18
256M x 16/18
256M x 16/18
256M x 16/18
600
711
800
800
600
711
800
800
600
711
800
800
600
711
800
800
53
45
45
40
53
45
45
40
53
45
45
40
53
45
45
40
Features
w
High speed 800,711 and 600 MHz RDRAM storage
w
184 edge connector pads with 1 mm pad spacing
w
Maximum module PCB size: 133.5mm x 34.93mm x
1.37mm(5.21” x 1.375” x 0.05”)
w
Gold plated edge connector pad contacts
w
Serial Presence Detect(SPD) support
w
Operates from a 2.5 volt supply (±5%)
w
Powerdown self refresh modes
w
µBGA
Package (92 balls)
w
Separate Row and Column buses for higher
efficiency
Form Factor
The Rambus RIMM modules are offered in a 184-pad
1mm edge connector pad pitch from factor suitable for
either 184 or 168 contact RIMM connectors. The
RIMM module is suitable for desktop and other system
applications. Figure 1 below, shows an eight device
Rambus RIMM module without heat spreader.
Figure 1: Rambus RIMM Module without heat spreader
Rev. 0.95 / July.01
2
RIMM
Table 2: Module Pad Number and Signal Names
TM
Module
with 256/288Mb RDRAMs Preliminary
Pin
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
Pin Name
Gnd
LDQA8
Gnd
LDQA6
Gnd
LDQA4
Gnd
LDQA2
Gnd
LDQA0
Gnd
LCTMN
Gnd
LCTM
Gnd
NC
Gnd
LROW1
Gnd
LCOL4
Gnd
LCOL2
Gnd
LCOL0
Gnd
LDQB1
Gnd
LDQB3
Gnd
LDQB5
Gnd
LDQB7
Gnd
LSCK
Vcmos
SOUT
Vcmos
NC
Gnd
NC
Vdd
Vdd
NC
NC
NC
NC
Pin
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40
B41
B42
B43
B44
B45
B46
Pin Name
Gnd
LDQA7
Gnd
LDQA5
Gnd
LDQA3
Gnd
LDQA1
Gnd
LCFM
Gnd
LCFMN
Gnd
NC
Gnd
LROW2
Gnd
LROW0
Gnd
LCOL3
Gnd
LCOL1
Gnd
LDQB0
Gnd
LDQB2
Gnd
LDQB4
Gnd
LDQB6
Gnd
LDQB8
Gnd
LCMD
Vcmos
SIN
Vcmos
NC
Gnd
NC
Vdd
Vdd
NC
NC
NC
NC
Pin
A47
A48
A49
A50
A51
A52
A53
A54
A55
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
A83
A84
A85
A86
A87
A88
A89
A90
A91
A92
Pin Name
NC
NC
NC
NC
Vref
Gnd
SCL
Vdd
SDA
SVdd
SWP
Vdd
RSCK
Gnd
RDQB7
Gnd
RDQB5
Gnd
RDQB3
Gnd
RDQB1
Gnd
RCOL0
Gnd
RCOL2
Gnd
RCOL4
Gnd
RROW1
Gnd
NC
Gnd
RCTM
Gnd
RCTMN
Gnd
RDQA0
Gnd
RDQA2
Gnd
RDQA4
Gnd
RDQA6
Gnd
RDQA8
Gnd
Pin
B47
B48
B49
B50
B51
B52
B53
B54
B55
B56
B57
B58
B59
B60
B61
B62
B63
B64
B65
B66
B67
B68
B69
B70
B71
B72
B73
B74
B75
B76
B77
B78
B79
B80
B81
B82
B83
B84
B85
B86
B87
B88
B89
B90
B91
B92
Pin Name
NC
NC
NC
NC
Vref
Gnd
SA0
Vdd
SA1
SVdd
SA2
Vdd
RCMD
Gnd
RDQB8
Gnd
RDQB6
Gnd
RDQB4
Gnd
RDQB2
Gnd
RDQB0
Gnd
RCOL1
Gnd
RCOL3
Gnd
RROW0
Gnd
RROW2
Gnd
NC
Gnd
RCFMN
Gnd
RCFM
Gnd
RDQA1
Gnd
RDQA3
Gnd
RDQA5
Gnd
RDQA7
Gnd
3
Rev. 0.95 / July.01
RIMM
Table 3: Module Connector Pad Description
Signal
Gnd
Module Connector Pads
A1, A3, A5, A7, A9, A11, A13, A15,
A17, A19, A21, A23, A25, A27, A29,
A31, A33, A39, A52, A60, A62, A64,
A66, A68, A70, A72, A74, A76, A78,
A80, A82, A84, A86, A88, A90, A92,
B1, B3, B5, B7, B9, B11, B13, B15,
B17, B19, B21, B23, B25, B27, B29,
B31, B33, B39, B52, B60, B62, B64,
B66, B68, B70, B72, B74, B76, B78,
B80, B82, B84, B86, B88, B90, B92
B10
B12
B34
A20, B20, A22, B22, A24
A14
A12
A2, B2, A4, B4, A6, B6, A8, B8, A10
TM
Module
with 256/288Mb RDRAMs Preliminary
I/O
Type
Description
Ground reference for RDRAM core and interface.
72 PCB connector pads.
LCFM
LCFMN
LCMD
LCOL4..
LCOL0
LCTM
LCTMN
LDQA8..
LDQA0
LDQB8..
LDQB0
I
I
I
I
I
I
RSL
RSL
Clock from master. Interface clock used for receiving
RSL signals from the Channel. Positive polarity
.
Clock from master. Interface clock used for receiving
RSL signals from the Channel. Negative polarity.
Serial Command used to read from and write to the
V
CMOS
control registers. Also used for power management.
RSL
RSL
RSL
Column bus. 5-bit bus containing control and address
information for column accesses.
Clock to master. Interface clock used for transmit-
ting RSL signals to the Channel. Positive polarity.
Clock to master. Interface clock used for transmit-
ting RSL signals to the Channel. Negative polarity.
Data bus A. A 9-bit bus carrying a byte of read or
write data between the Channel and the RDRAM.
LDQA8 is non-functional on x16 RDRAM devices.
Data bus B. A 9-bit bus carrying a byte of read or
write data between the Channel and the RDRAM.
LDQB8 is non-functional on x16 RDRAM devices.
Row bus. 3-bit bus containing control and address
information for row accesses.
Serial Clock input. Clock source used to read from
These pads are not connected. These 8 connector
pads are reserved for future use.
These pads are not connected. These 16connector
pads art reserved for future use. The 168 contact
RIMM connector does not connect to these PCB
pads.
I/O
B32, A32, B30, A30, B28, A28, B26,
A26, B24
RSL
I/O
RSL
LROW2..
B16, A18, B18
LROW0
LSCK
NC
NC
A34
A16, B14, A38, B38, A40, B40, A77,
B79
A43, B43, A44, B44, A45, B45, A46,
B46, A47, B47, A48, B48, A49, B49,
A50, B50
I
I
RSL
V
CMOS
and write to the RDRAM control registers.
RCFM
RCFMN
B83
B81
I
RSL
Clock from master. Interface clock used for receiv-
ing RSL signals from the Channel. Positive polarity.
Clock from master. Interface clock used for receiv-
ing RSL signals from the Channel. Negative polar-
ity.
4
I
RSL
Rev. 0.95 / July.01
RIMM
Signal
RCMD
Module Connector Pads
B59
TM
Module
with 256/288Mb RDRAMs Preliminary
I/O
Type
Description
Serial Command Input used to read from and write
to the control registers. Also used for power
management.
Column bus. 5-bit bus containing control and
address information for column accesses.
Clock to master. Interface clock used for transmit-
ting RSL signals to the Channel. Positive polarity.
Clock to master. Interface clock used for transmit-
ting RSL signals to the Channel. Negative polarity.
Data bus A. A 9-bit bus carrying a byte of read or
write data between the Channel and the RDRAM.
RDQA8 is non-functional on x16 RDRAM devices.
Data bus B. A 9-bit bus carrying a byte of read or
write data between the Channel and the RDRAM.
RDQB8 is non-functional on x16 RDRAM devices.
Row bus. 3-bit bus containing control and address
information for row accesses.
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, SWE,
SA0, SA1 and SA2.
I
RCOL4..
RCOL0
RCTM
RCTMN
A73, B73, A71, B71, A69
A79
A81
V
CMOS
I
I
I
RSL
RSL
RSL
RDQA8..
A91, B91, A89, B89, A87, B87, A85,
B85, A83
RDQA0
RDQB8..
B61, A61, B63, A63, B65, A65, B67,
A67, B69
RDQB0
RROW2..
B77, A75, B75
RROW0
RSCK
SA0
SA1
SA2
SCL
SDA
SIN
A59
B53
B55
B57
A53
A55
B36
I/O
RSL
I/O
RSL
I
I
I
I
I
I
I/O
I/O
RSL
V
CMOS
SV
DD
SV
DD
SV
DD
SV
DD
SV
DD
V
CMOS
SOUT
A36
I/O
SV
DD
SWP
V
CMOS
Vdd
Vref
A56, B56
A57
A35, B35, A37, B37
A41, A42, A54, A58, B41, B42, B54,
B58
A51, B51
V
CMOS
I
SV
DD
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.
I
Supply voltage for the RDRAM core and interface
logic.
Logic threshold reference voltage for RSL signals.
Rev. 0.95 / July.01
5
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