EBE21FD4AGFD Datasheet PDF - Elpida Memory
| Part Number | EBE21FD4AGFD | |
| Description | 2GB Fully Buffered DIMM | |
| Manufacturers | Elpida Memory | |
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PRELIMINARY DATA SHEET
www.DataSheet4U.com
2GB Fully Buffered DIMM
EBE21FD4AGFD
EBE21FD4AGFN
Specifications
• Density: 2GB
• Organization
256M words × 72 bits, 2 ranks
• Mounting 36 pieces of 512M bits DDR2 SDRAM
sealed in FBGA
• Package
240-pin fully buffered, socket type dual in line
memory module (FB-DIMM)
PCB height: 30.35mm
Lead pitch: 1.00mm
Advanced Memory Buffer (AMB): 655-ball FCBGA
Lead-free (RoHS compliant)
• Power supply
DDR2 SDRAM: VDD = 1.8V ± 0.1V
AMB: VCC = 1.5V + 0.075V/−0.045
• Data rate: 667Mbps/533Mbps (max.)
• Four internal banks for concurrent operation
(components)
• Interface: SSTL_18
• Burst lengths (BL): 4, 8
• /CAS Latency (CL): 3, 4, 5
• Precharge: auto precharge option for each burst
access
• Refresh: auto-refresh, self-refresh
• Refresh cycles: 8192 cycles/64ms
Average refresh period
7.8µs at 0°C ≤ TC ≤ +85°C
3.9µs at +85°C < TC ≤ +95°C
• Operating case temperature range
TC = 0°C to +95°C
Features
• JEDEC standard Raw Card E Design
• Industry Standard Advanced Memory Buffer (AMB)
• High-speed differential point-to-point link interface at
1.5V (JEDEC draft spec)
14 north-bound (NB) high speed serial lanes
10 south-bound (SB) high speed serial lanes
• Various features/modes:
MemBIST and IBIST test functions
Transparent mode and direct access mode for
DRAM testing
Interface for a thermal sensor and status indicator
• Channel error detection and reporting
• Automatic DDR2 SDRAM bus and channel
calibration
• SPD (serial presence detect) with 1piece of 256 byte
serial EEPROM
Note: Warranty void if removed DIMM heat
spreader.
Performance
System clock
frequency
167MHz
133MHz
FB-DIMM
Speed grade
PC2-5300F
PC2-4200F
Peak channel
throughput
8.0GByte/s
6.4GByte/s
DDR2 SDRAM
FB-DIMM link data rate
4.0Gbps
3.2Gbps
Speed Grade
DDR2-667 (5-5-5)
DDR2-533 (4-4-4)
DDR data rate
667Mbps
533Mbps
Document No. E0868E30 (Ver. 3.0)
Date Published August 2006 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2006
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EBE21FD4AGFD, EBE21FD4AGFN
Interfaces
www.DataSheet4U.com
Figure Block Diagram AMB Interfaces shows the AMB and all of its interfaces. They consist of two FB-DIMM links,
one DDR2 channel and an SMBus interface. Each FB-DIMM link connects the AMB to a host memory controller or
an adjacent FB-DIMM. The DDR2 channel supports direct connection to the DDR2 SDRAMs on a FB-DIMM.
Memory Interface
NB FBD
out Link
SB FBD
in Link
AMB
NB FBD
in Link
SB FBD
out Link
SMB
Block Diagram AMB Interfaces
Interface Topology
The FB-DIMM channel uses a daisy-chain topology to provide expansion from a single DIMM per channel to up to 8
DIMMs per channel. The host sends data on the southbound link to the first DIMM where it is received and redriven
to the second DIMM. On the southbound data path each DIMM receives the data and again re-drives the data to the
next DIMM until the last DIMM receives the data. The last DIMM in the chain initiates the transmission of data in the
direction on the host (a.k.a. northbound). On the northbound data path each DIMM receives the data and re-drives
the data to the next DIMM until the host is reached.
Host
Southbound
Nourthbound
AMB
AMB
AMB
AMB
n/c n/c
Block Diagram FB-DIMM Channel Southbound and Northbound Paths
Preliminary Data Sheet E0868E30 (Ver. 3.0)
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for EBE21FD4AGFD electronic component. |
| Information | Total 22 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ EBE21FD4AGFD.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| EBE21FD4AGFD | The function is 2GB Fully Buffered DIMM. Elpida Memory | |
| EBE21FD4AGFN | The function is 2GB Fully Buffered DIMM. Elpida Memory | |
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