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Product Databrief
PI3DDR4212
1.8V/ 2.5V/ 3.3V 12 bit 2:1 DDR3/DDR4 Switch
Description
Features
This 12-bit DDR3/DDR4 switch is designed for 1.8V/ 2.5V/
3.3V supply voltage, POD_12, SSTL_12 and SSTL_15 signaling and CMOS select input signals. It is designed for DDR3 or
DDR4 memory bus with speed up to 5Gbps. It supports DDR4
1600~4266 Mbps transfer rate.
Î
12
PI3DDR4212 has a 1:2 demux or 2:1 mux topology. All 2-bit
channels can be switched to one of the two ports simultaneously with the SEL input. This device also allows all ports to be
disconnected.
PI3DDR4212 uses Pericom’s proprietary high speed switch
technology providing consistent high bandwidth across all
channels, with very little insertion loss, cross-talk, and bit to
bit skew.
It is available in 48-pin TFBGA 3x8x1mm package. The 48pin version is pin compatible with CBTU24DD2/CBTV24DD2.
Applications
ÎDDR4
Memory Bus System
ÎNVDIMM
Memory Array sub system
ÎHigh
Speed multiplexing
Î
VDD
1.8V/ 2.5V/ 3.3V
Î
Flow
through pinout option for easy layout
Î
SEL
and Global Enable
Î
High
impedance and low Coff channel output when
disabled or deselected
Î
Low
RON: 7 typical
Î
3dB
Bandwidth: 6GHz (typical)
Î
Low
insertion loss: -1db @ 2GHz typical
Î
Low
return loss: -24db @ 2GHz typical
Î
Low
cross-talk for high speed channels:
-19db @ 2GHz typical
Î
Low
off-isolation: -20db @ 2GHz typical
Î
Low
Propagation Delay: 70ps Typ
Î
Low
bit-to-bit skew 8ps Max across 6 Bits
Î
ESD:
Module
ÎFlash
bit 2:1 switch that supports DDR3 800 2133Mbps,
DDR4 1600~4266 Mbps
2KV HBM
Î
POD_12,
SSTL_12 & SSTL_15 signaling
Î
Packaging
(Pb-free and Green)
Î
48
pin TFBGA (3x8x1mm)pin compatible with
CBTV24DD12
Block Diagram
VDD
Application Diagram
SEL[0:1]
EN
12 Switches/ module
Nand Flash
PI3DDR4212
DDR3/4
DRAM
Host DRAM
Interface
PI3DDR4212
B[0:11]
host side B
12-bit
2 : 1 MUX/switch
A[0:11]
DRAM side
NAND
Flash
Ctlr
DRAM
Ctlr
XO
LDO
Local Processor
C[0:11]
host side C
DMA
GND
www.pericom.com
i
| 1-408-232-9100
1 408 232 910
100
0
ASIC
DIMM
Power-Fail
Sideband
Comm
Channel
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