DS92LV1212TMSA National Semiconductor, DS92LV1212TMSA Datasheet

IC DESERIALZR RANDOM LOCK 28SSOP

DS92LV1212TMSA

Manufacturer Part Number
DS92LV1212TMSA
Description
IC DESERIALZR RANDOM LOCK 28SSOP
Manufacturer
National Semiconductor
Datasheet

Specifications of DS92LV1212TMSA

Function
Deserializer
Data Rate
400Mbps
Input Type
LVDS
Output Type
LVDS
Number Of Inputs
1
Number Of Outputs
10
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*DS92LV1212TMSA

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS92LV1212TMSA
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
DS92LV1212TMSAX
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
DS92LV1212TMSAX/NOPB
Manufacturer:
NS
Quantity:
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© 1999 National Semiconductor Corporation
DS92LV1212
16-40 MHz 10-Bit Bus LVDS Random Lock Deserializer
with Embedded Clock Recovery
General Description
The DS92LV1212 is an upgrade of the DS92LV1210. It
maintains all of the features of the DS92LV1210 with the ad-
ditional capability of locking to the incoming data stream
without the need of SYNC patterns. This makes the
DS92LV1212 useful in applications where the Deserializer
must be operated “open-loop” — without a feedback path
from the Deserializer to the Serializer. The DS92LV1212 is
designed to be used with the DS92LV1021 Bus LVDS Serial-
izer. The DS92LV1212 receives a Bus LVDS serial data
stream and transforms it into a 10-bit wide parallel data bus
and separate clock. The reduced cable, PCB trace count
and connector size saves cost and makes PCB layout
easier. Clock-to-data and data-to-data skews are eliminated
since one input receives both clock and data bits serially.
The powerdown pin is used to save power by reducing the
supply current when the device is not in use. The Deserial-
izer will establish lock to a synchronization pattern within
specified lock times but it can also lock to a data stream with-
out SYNC patterns.
Block Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DS100982
Features
n Clock recovery without SYNC patterns-random lock
n Guaranteed transition every data transfer cycle
n Chipset (Tx + Rx) power consumption
n Single differential pair eliminates multi-channel skew
n 400 Mbps serial Bus LVDS bandwidth (at 40 MHz clock)
n 10-bit parallel interface for 1 byte data plus 2 control bits
n Synchronization mode and LOCK indicator
n Flow-through pinout for easy PCB layout
n High impedance on receiver inputs when power is off
n Programmable edge trigger on clock
n Footprint compatible with DS92LV1210
n Small 28-lead SSOP package-MSA
40MHz
or UTOPIA I Interface
DS100982-1
<
300mW (typ)
www.national.com
April 1999
@

Related parts for DS92LV1212TMSA

DS92LV1212TMSA Summary of contents

Page 1

... SYNC patterns. Block Diagram TRI-STATE ® registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100982 Features n Clock recovery without SYNC patterns-random lock n Guaranteed transition every data transfer cycle < ...

Page 2

Block Diagram (Continued) Functional Description The DS92LV1212 is a 10-bit Deserializer chip designed to receive data over a heavily loaded differential backplanes at clock speeds from 16 MHz to 40 MHz. It may also be used to receive data over ...

Page 3

Random Lock Initialization and Resynchronization The initialization and resynchronization methods described in their respective sections are the fastest ways to establish the link between the Serializer and Deserializer, however, the DS92LV1212 can attain lock to a data stream without re- ...

Page 4

... RMT Patterns DIN0 Held Low-DIN1 Held High Creates an RMT Pattern DIN8 Held Low-DIN9 Held High Creates an RMT Pattern NSID DS92LV1021TMSA DS92LV1212TMSA www.national.com DS100982-23 DIN4 Held Low-DIN5 Held High Creates an RMT Pattern DS100982-25 Order Numbers Function Serializer Deserializer 4 DS100982-24 Package MSA28 MSA28 ...

Page 5

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( CMOS/TTL Input Voltage −0. CMOS/TTL Output Voltage −0. Bus LVDS Receiver Input Voltage Junction Temperature Storage Temperature Lead Temperature ...

Page 6

Deserializer Switching Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. Symbol Parameter t Receiver out Clock RCP Period t CMOS/TTL Low-to-High CLH Transition Time t CMOS/TTL High-to-Low CHL Transition Time t Deserializer Delay DD t ROUT (0-9) ...

Page 7

AC Timing Diagrams and Test Circuits FIGURE 1. “Worst Case” Deserializer ICC Test Pattern FIGURE 2. Deserializer CMOS/TTL Output Load and Transition Times FIGURE 3. Serializer Delay FIGURE 4. Deserializer Delay 7 DS100982-4 DS100982-6 DS100982-11 DS100982-12 www.national.com ...

Page 8

AC Timing Diagrams and Test Circuits Timing shown for RCLK_R/F = LOW Duty Cycle ( RDC FIGURE 5. Deserializer Setup and Hold Times FIGURE 6. Deserializer TRI-STATE Test Circuit and Timing www.national.com (Continued) DS100982-13 DS100982-14 8 ...

Page 9

AC Timing Diagrams and Test Circuits FIGURE 7. Deserializer PLL Lock Times and PWRDN TRI-STATE Delays FIGURE 8. Deserializer PLL Lock Time from SyncPAT (Continued) 9 DS100982-15 DS100982-22 www.national.com ...

Page 10

AC Timing Diagrams and Test Circuits SW - Setup and Hold Time (Internal data sampling window Serializer Output Bit Position Jitter JIT t = Receiver Sampling Margin Time RSM FIGURE 9. Receiver Bus LVDS Input Skew Margin Application ...

Page 11

... In the point-to-point configuration the potential of offsetting the ground levels of the Serializer vs. the Deserial- izer must be considered. Bus LVDS provides a plus / minus one volt common mode range at the receiver inputs. DS100982-26 DS92LV1212TMSA - Deserializer DS100982-19 No. Description ± 15–19, Data Output ...

Page 12

Deserializer Pin Description Pin Name I/O RCLK_R/F I RI+ I RI− I PWRDN I LOCK O RCLK O REN I DVCC I DGND I AVCC I AGND I REFCLK I Truth Table RI RI− RCLK_R ...

Page 13

... Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS92LV1021TMSA or DS92LV1212TMSA LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1 ...

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