lm2501sl National Semiconductor Corporation, lm2501sl Datasheet

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lm2501sl

Manufacturer Part Number
lm2501sl
Description
Mobile Pixel Link Mpl Camera Interface Serializer And Deserializer
Manufacturer
National Semiconductor Corporation
Datasheet
© 2004 National Semiconductor Corporation
Ordering Information
LM2501
Mobile Pixel Link (MPL) Camera Interface Serializer and
Deserializer
General Description
The LM2501 device is a Serializer/Deserializer that adapts
existing video busses to Mobile Pixel Link (MPL). MPL is
intended to replace wide LVCMOS video interfaces inside
portable electronics equipment benefiting their cost, size,
EMI and power consumption.
By using the LM2501 SERDES chipset, the interconnect is
reduced from 12 active signals to only 3 active signals
providing a 75% reduction. This eases interconect and flex
design, size and cost.
Contained in a 24 lead Ultra Thin CSP Package, the Serial-
izer resides beside the video source (camera) and translates
the parallel bus from LVCMOS levels to serial MPL levels for
transmission over a flex cable to the Deserializer located by
the respective destination Video Input Port.
An extra clock transport is provided to deliver a clock signal
to the target. For example, from the main board to the flip
board where the camera module is located. Transmission of
the clock also benefits from MPL’s low power transmission
and low EMI.
The Power_Down (PD*) input controls the power state of the
MPL interface. When PD* is asserted, the MD, MC and WC
signals are powered down to save current and reduce power
dissipation.
Typical Application Diagram
I2C
®
is a registered trademark of Phillips Corporation.
LM2501SL
NSID
24-Lead Ultra Thin CSP 3.5 X 4.5 X 0.6 mm
DS200916
Package Type
Features
n 160 Mbps Raw Throughput
n MPL-0 Meets MPL Physical Layer Specification
n Configurable as a Serializer or Deserializer
n Complete LVCMOS to MPL Translation
n Serializes 8-bit Camera Interface
n Link power down mode reduces quiescent power under
n 1.7V–3.1V and 2.9-3.1V Supply Voltage
n Interfaces to 1.8V–3.0V Logic
n Offered in a small 24L UCSP Package
System Benefits
n Reduced Wire Interface
n Low Power
n Low EMI
n Extra Clock Transport
n Intrinsic Level Translation
∼ 10 µA (actual TBD)
— 8-bit color data
— plus VSYNC and HSYNC bits
— 3.5 mm X 4.5 mm
— 0.6 mm Max Height
ADVANCE INFORMATION
Package ID
SLE24A
20091601
www.national.com
June 2004

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lm2501sl Summary of contents

Page 1

... MPL interface. When PD* is asserted, the MD, MC and WC signals are powered down to save current and reduce power dissipation. Typical Application Diagram Ordering Information NSID LM2501SL I2C is a registered trademark of Phillips Corporation. ® © 2004 National Semiconductor Corporation Features n 160 Mbps Raw Throughput ...

Page 2

Connection Diagram General Block Diagrams: Serializer and Deserializer www.national.com TOP VIEW 2 20091612 20091613 ...

Page 3

Pin Description No. Pin Name I/O, Type of Pins MPL SERIAL BUS PINS MD 1 IO, MPL MC 1 IO, MPL MG 1 Ground CONFIGURATION/PARALLEL BUS PINS Mode[1: LVCMOS PD LVCMOS D0–D7 8 IO, LVCMOS VS ...

Page 4

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V ) DDA Supply Voltage ( Supply Voltage (V ) DDIO LVCMOS Input/Output Voltage MPL ...

Page 5

Switching Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. (Note 2) Symbol Parameter PARALLEL BUS TIMING t Set Time - Data to Clock SET t Hold Time - Clock to Data HOLD t Rise Time RISE t ...

Page 6

Input Timing Requirements Over recommended operating supply and temperature ranges unless otherwise specified. (Note 2) Symbol Parameter REFERENCE CLOCK (WCLK ) IN f Clock Frequency WC WC Clock Duty Cycle DC t Clock Transition Times T (Rise or Fall, 10%–90%) ...

Page 7

Application Information Typical application connections for the LM2501 are shown below. The application shown in Figure 3 illustrates a connection between an Image sensor and a host utilizing an MPL-0 link. . FIGURE 3. Camera Application 7 20091614 www.national.com ...

Page 8

Functional Description SERIAL BUS OPERATION Bus Overview The MPL bus is a simple 2-signal line interface that is intended to replace wide low voltage CMOS video busses inside handheld portable devices. The MPL physical layer is purpose-built for an extremely ...

Page 9

Functional Description SERIAL BUS POWER-UP In the sleep state, WC, MC and MD are turned off with zero current flowing. Both devices need to be enabled by assert- ing their PD* inputs. The DES will then initialize the SER via ...

Page 10

Functional Description In Figure 6 , the Serializer timing is shown. For the part to establish lock, WCLKIO(out) must be active, and a valid PCLK applied. After lock is obtained, the MC and MD lines are initialized and then active ...

Page 11

Functional Description CAMERA INTERFACE The Camera Interface provides serialization of color and control bits. The interface provides data transport in a single direction. Byte alignment is provided by the intrinsic first rising edge of the MC line. PCLK is required ...

Page 12

Features and Operation POWER DOWN/OFF The device may be powered by its PD* pin. A Low on this pin will power down the entire device. TABLE 2. Power Down Output States Mode Pin Type SER WCLKIO LVCMOS SER MC MPL ...

Page 13

Features and Operation When the Deserializer’s PD* signal is de-asserted, the WC output will power up and initialize the serializer and start transmitting the clock reference. Once the Serializer re- ceived the clock, it waits seven cycles, and then outputs ...

Page 14

... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. inches (millimeters) unless otherwise noted Order Number LM2501SL NS Package Number SLE24A 2 ...

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