Direct Rambus NexMod™
VINRXXXETX0XXCXX
Viking TechnologySingle-Channel RDRAM NexMod™ Specification
General Description
Viking VINRxxxETx0xCxx are high-density Direct
Rambus NexMod™ Modules. The modules consist
of up to eight, CMOS 16M x 18-bit Rambus DRAM
in FBGA packages uniquely arranged in a PCB
stacked module. The modules also include an
EEPROM for Serial Presence Detect, VRM
(voltage regulator module), DRCG (Direct Rambus
Clock Generator), and end-of-channel termination.
Decoupling capacitors are mounted on the circuit
boards for each RDRAM. NexMod™ modules
directly mount to motherboards using a BGA
connection.
The NexMod™ product family addresses the needs
of customers designing space-constrained
systems. NexMod™ is a cost effective, small
volumetric form factor solution that simplifies
system layout and speeds time-to-market by
providing virtually all the components needed for a
complete Rambus channel.
Rambus Signaling Level (RSL) technology permits
up to 1066 MHz transfer rates while using
conventional system and board design
technologies. RDRAM devices are capable of
sustained data transfers at 938ps per two bytes
(7.5ns 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
RDRAM’s multi-bank architecture supports up to
four simultaneous transactions per device.
Features
NexMod and Rambus compatible:
- Fully compatible with NexMod
- Simplifies system layout
- Faster time-to-market
Stacked PCB module design:
- Improves signal integrity and margin
- Shortens Rambus channel length by
stacking PCBs and placing DRCG,
VRM, RDRAM VREF and termination
networks on module
- BGA connectors to mainboard provide
mounting and prototype flexibility
- BGA connector to mainboard utilizes
tin/lead paste for RoHS 5 applications
- BGA interposers within module
200 pin interconnect pattern with 0.50”
(1.27mm) pitch
Module footprint: 1.1 inches x 2.0 inches
Serial Presence Detect (SPD) support
Operates from a 2.5 volt supply (±5%)
Low power and powerdown self-refresh
modes
I/O Freq up to 1066 Mhz, tRAC up to 32 ns
Separate RAS and CAS buses for higher
efficiency
RoHS 5 Compliant* (see last page)
Related Documents
Data sheets for the Rambus memory system
components, including the Rambus DRAMs,
Rambus standards, and SORIMM connector are
available on the Rambus web site at
http://www.rambus.com.
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 1 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Part Numbers by Configuration
Part Number
Description
RDRAM Device
Module Speed
VINR128ET004LCEB-C
VINR256ET008LCEB-C
VRNR512ET216LCEB
144MB, ECC, BGA connector
288MB, ECC, BGA connector
576MB, ECC, BGA connector
Elpida EDR2518ABSE-AEP-E
Elpida EDR2518ABSE-AEP-E
Elpida EDR2518ABSE-AEP-E
1066MHz 32ns
1066MHz 32ns
1066MHz 32ns
RDRAM
die Rev.
B
B
B
Module arrangement
Module cover plate
VRM, DRCG, Termination resistors
BGA interposers
BGA connection to
mainboard
256/288Mb RDRAMs
Module Stack-up Diagram
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 2 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Module Pad Number and Signal Names
Top View of NexMod Footprint, Indicating Pin Locations (Not in scale)
J2 Connector Pinout
Pin Signal Pin Signal Pin
Signal
Pin Signal Pin
Signal
A1
B1
C1
D1 VCMOS E1
VDD
VDD
VCMOS
VCMOS
A2
B2
C2
D2 DQA8 E2
VDD
SCK
GND
GND
A3
B3 DQA6 C3
D3
E3
VDD
GND
CMD
VTERM*
A4
B4 DQA4 C4
D4 DQA7 E4
VDD
GND
VTERM*
A5
B5 DQA2 C5
D5 DQA5 E5
VDD
GND
VTERM*
A6
B6 DQA0 C6
D6 DQA3 E6
VDD
GND
GND
A7
B7
C7
D7 DQA1 E7
GND
CFM
GND
GND
A8
B8 CFMN C8
D8 CTMN E8 CTMN-DRCG*
GND
GND
A9
B9 ROW1 C9
D9
E9 CTM-DRCG*
GND
GND
CTM
A10 GND B10 COL4 C10
D10 ROW2 E10
GND
GND
A11 GND B11 COL2 C11
D11 ROW0 E11
GND
VREF
A12 GND B12 COL0 C12
D12 COL3 E12
GND
VREF
A13 GND B13 DQB0 C13
D13 COL1 E13
GND
GND
A14 VDD B14 DQB2 C14
D14 DQB1 E14
GND
SIN
A15 VDD B15 DQB4 C15
D15
E15
GND
DQB3
GND
A16 VDD B16 DQB6 C16
D16 DQB5 E16
GND
GND
A17 SA0 B17 GND C17
D17 DQB7 E17
GND
GND
A18 SA1 B18 REFCLK C18
D18 DQB8 E18
GND
VDD3.3
A19 SA2 B19
C19
D19 GND E19
SDA
SWP
VDD3.3
A20 PCLK/M B20 GND C20 SYNCLK/N D20 SVDD E20
SCL
*VTERM, CTMN-DRCG, and CTM DRCG pins are only used if internal VRM and DRCG options are not used on the NexMod.
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 3 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Module Pad Number and Signal Names (cont’d)
J4 Connector Pinout
Pin
Signal
Pin
Signal
Pin Signal Pin
Signal
Pin Signal
A1
B1
C1 VCMOS D1
E1 VDD
VCMOS
VCMOS
VDD
A2
B2
C2
D2
GND
RESERVED*
GND
RESERVED* E2 VDD
A3
B3 RESERVED* C3
D3 RESERVED* E3 VDD
VTERM
GND
A4
B4 RESERVED* C4
D4 RESERVED* E4 VDD
VTERM
GND
A5
B5 RESERVED* C5
D5 RESERVED* E5 VDD
VTERM
GND
A6
B6 RESERVED* C6
D6 RESERVED* E6 VDD
GND
GND
A7
B7 RESERVED* C7
D7 RESERVED* E7 GND
GND
GND
A8
B8 RESERVED* C8
D8 RESERVED* E8 GND
GND
GND
A9
B9 RESERVED* C9
D9 RESERVED* E9 GND
GND
GND
A10
B10 RESERVED* C10 GND D10 RESERVED* E10 GND
GND
A11
B11 RESERVED* C11 GND D11 RESERVED* E11 GND
VREF
A12
B12 RESERVED* C12 GND D12 RESERVED* E12 GND
VREF
A13
B13 RESERVED* C13 GND D13 RESERVED* E13 GND
GND
A14 RESERVED* B14 RESERVED* C14 GND D14 RESERVED* E14 GND
A15
B15 RESERVED* C15 GND D15 RESERVED* E15 VDD
GND
A16
B16 RESERVED* C16 GND D16 RESERVED* E16 VDD
GND
A17
B17 RESERVED* C17 GND D17
E17 VDD
GND
GND
A18
B18
C18
D18
E18 VDD
GND
RESERVED*
GND
VDD
A19
B19
C19 GND D19
E19 VDD
GND
GND
VDD
A20
B20
C20 GND D20
E20 GND
GND
GND
GND
*Reserved pins are used during module assembly at the factory. Do NOT connect in system layout.
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 4 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Module Connector Pad Description
Signal
I/O
Type
GND
Description
Ground reference for connector pads, RDRAM core, and interface.
CFM
I
RSL
Clock from master. Interface clock used for receiving RSL signals from the Channel. Positive
polarity.
CFMN
I
RSL
Clock from master. Interface clock used for receiving
RSL signals from the Channel. Negative polarity.
I
VCMOS
COL4…
COL0
I
RSL
Column bus. 5-bit bus containing control and address information for column accesses.
CTM
0
RSL
Clock from on-board DRCG to Master. Interface clock used for transmitting RSL signals to the
Channel. Positive polarity.
CTMN
0
RSL
Clock from on-board DRCG to master. Interface clock used for transmitting RSL signals to the
Channel. Negative polarity.
DQA8…
DQA0
I/O
RSL
Data bus A. 9-bit bus carrying a byte of read or write data between the Channel and RDRAMs.
DQA8 is not used on modules with x16 RDRAM devices.
DQB8…
DQB0
I/O
RSL
Data bus B. 9-bit bus carrying a byte of read or write data between the Channel and RDRAMs.
DQB8 is not used on modules with x16 RDRAM devices.
ROW2…
ROW0
I
RSL
Row bus. 3-bit bus containing control and address information for row accesses.
SCK
I
VCMOS
CMD
NC
Serial Command used to read from and write to the control registers. Also used for power
management.
Serial clock input. Clock source used to read from and write to the RDRAM control registers.
Pads are not connected. Reserved for future use.
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 5 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Module Connector Pad Description (cont’d)
Signal
I/O
Type
SA0
I
SVDD
Serial Presence Detect Address 0.
SA1
I
SVDD
Serial Presence Detect Address 1.
SA2
I
SVDD
Serial Presence Detect Address 2.
SCL
I
SVDD
Serial Presence Detect Clock.
SDA
I/O
SVDD
Serial Presence Detect Data (Open Collector I/O).
SIN
I/O
VCMOS
SVDD
SWP
Description
Serial I/O for reading from and writing to the control registers. Attaches to SIO0 of the first RDRAM
on the module.
SPD Voltage. Used for signals SCL, SDA, SWE, SA0, SA1 and SA2.
I
SVDD
Serial Presence Detect Write Protect (active high). When low, the SPD can be written as well as
read.
PCLK/M
VDD3.3
Phase detector input (DRCG).
SYNCLK/N
VDD3.3
Phase detector input (DRCG).
REFCLK
VDD3.3
Reference clock (DRCG).
CTM-DRCG
I
RSL
Clock from external DRCG to master routed to last device in channel. Positive polarity.
CTMNDRCG
I
RSL
Clock from external DRCG to master routed to last device in channel. Negative polarity.
VDD3.3
Supply voltage for DRCG
VCMOS
CMOS I/O Voltage. Used for signals CMD, SCK, SIN, SOUT.
VDD
Supply voltage for the RDRAM core and interface logic.
VREF
Logic threshold reference voltage for RSL signals.
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 6 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Physical Layout Dimensions
Top view layout dimensions (millimeters)
256MB NexMod with BGA connector vertical dimensions
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 7 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Physical Layout Dimensions (cont’d)
128MB NexMod with BGA connector vertical dimensions
64MB NexMod with BGA connector vertical dimensions
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 8 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
Functional Block Diagram
DQB8..
DQB0
9
ROW2.
.ROW0
SCK,
CMD
COL4.. DQA8..
COL0 DQA0
3
2
5
SIN
CFM
CFMN
CTM
CTMN
CTMDRCG1
CTMNDRCG1
PCLKM
SYNCLKN REFCLK
9
Jumpers
Clock
Termin
Netwrok
RDRAM(1)
DRCG
n Devices
VDD
RDRAM(n)
VRM
Channel Termination
SPD
VCOMS
VDD33
SVDD
VREF
VTERM2
SA0 SA1 SA2 SCL SWP SDA
1. Used if internal DRCG not used (contact Viking for ordering options and application notes)
2. Used if internal VRM not used (contact Viking for ordering options and application notes)
Viking Technology¨2950 Red Hill Ave ¨ Costa Mesa, CA 92626
Office: 714.913.2200 Fax: 714.913.2202¨Website: http://www.vikingtechnology.com
This Data Sheet is subject to change without notice.
Doc. # PSNRXXXETX0XXCXX Revision D Created By: Brian Ouellette
Page 9 of 14
Direct Rambus NexMod™
VINRXXXETX0XXCXX
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Unit
Voltage applied to any RSL or CMOS signal pad with
VIABS
-0.3 ~ VDD + 0.3
V
respect to Gnd
Voltage on VDD with respect to Gnd
VDD,ABS
-0.5 ~ VDD + 1.0
V
Storage temperature
TSTORE
-50 ~ 100
C
o
Operating junction temperature
TjMAX
100
C
o
Operating heat spreader surface temperature
TCMAX
92
C
Operating and storage humidity (non-condensing)
RHSTORE, RHOP
95
%RH
Note: Permanent device damage may occur if ‘ABSOLUTE MAXIMUM RATINGS’ are exceeded. Functional operation should be
restricted to recommended operating condition. Exposure to higher than recommended voltage for extended periods of time could affect
device reliability.
DC OPERATING CONDITIONS AND CHARACTERISTICS
Recommended operating conditions (Voltages referenced to GND, TA = 0 to 70C, VDD / VCMOS = 2.5 ± 0.13V)
Parameter and Conditions
Supply voltage (Note 1)
CMOS I/O power supply for 2.5V controllers (Note 2)
CMOS I/O power supply for 1.8V controllers (Note 2)
Reference voltage (Note 1)
Serial Presence Detect- positive power supply
800 MHz versions (A,B)
RSL input low voltage
1066 MHz versions (L)
800 MHz versions (A,B)
RSL input high voltage
1066 MHz versions (L)
CMOS input low voltage (Note 3)
CMOS input high voltage (Note 4)
CMOS output low voltage @ IOL = 1mA
CMOS output high voltage @ IOH = -0.25mA
Reference current @ VREF max
800 MHz versions (A,B)
RSL output low current
(Note 5)
1066 MHz versions (L)
RSL output high current @ (0