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LM2502SM Datasheet

  • LM2502SM

  • National Semiconductor [Mobile Pixel Link (MPL) Display Int...

  • NSC

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LM2502 Mobile Pixel Link (MPL) Display Interface Serializer and Deserializer
August 2005
LM2502
Mobile Pixel Link (MPL) Display Interface Serializer and
Deserializer
General Description
The LM2502 device is a dual link display interface SERDES
that adapts existing CPU / video busses to a low power
current-mode serial MPL link. The chipset may also be used
for a RGB565 application with glue logic. The interconnect is
reduced from 22 signals to only 3 active signals with the
LM2502 chipset easing flex interconnect design, size and
cost.
The Master Serializer (SER) resides beside an application
processor or baseband processor and translates a parallel
bus from LVCMOS levels to serial MPL levels for transmis-
sion over a flex cable and PCB traces to the Slave Deseri-
alizer (DES) located near the display module.
Dual display support is provided for a primary and sub
display through the use of two ChipSelect signals. A Mode
pin selects either a i80 or m68 style interface.
The Power_Down (PD*) input controls the power state of the
MPL interface. When PD* is asserted, the MD1/0 and MC
signals are powered down to save current.
The LM2502 implements the physical layer of the MPL Stan-
dard (MPL-0). The LM2502 is offered in NOPB (Lead-free)
UFBGA and LLP packages.
Features
n
n
n
n
n
n
>
300 Mbps Dual Link Raw Throughput
MPL Physical Layer (MPL-0)
Pin selectable Master / Slave mode
Frequency Reference Transport
Complete LVCMOS / MPL Translation
Interface Modes:
鈥?16-bit CPU, i80 or m68 style
鈥?RGB565 with glue logic
鈭?0藲C to 85藲C Operating Range
Link power down mode reduces I
DDZ
<
10 碌A(chǔ)
Dual Display Support (CS1* & CS2*)
Via-less MPL interconnect feature
3.0V Supply Voltage (V
DD
and V
DDA
)
Interfaces to 1.7V to 3.3V Logic (V
DDIO
)
n
n
n
n
n
n
System Benefits
n
n
n
n
n
Small Interface
Low Power
Low EMI
Frequency Reference Transport
Intrinsic Level Translation
Typical Application Diagram
20093301
Ordering Information
NSID
LM2502SM
LM2502SQ
Package Type
49 Lead UFBGA style, 4.0 X 4.0 X 1.0 mm, 0.5 mm pitch
1000 std reel, LM2502SMX 4500 reel
40 Lead LLP style, 5.0 X 5.0 X 0.8 mm, 0.4 mm pitch
1000 std reel, LM2502SQX 4500 reel
Package ID
SLH49A
SQF40A
漏 2005 National Semiconductor Corporation
DS200933
www.national.com

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