CYV270M0101EQ_0710中文资料
CYV270M0101EQ
Adaptive Video Cable Equalizer
Features
■Adaptive cable equalization ■SMPTE 259M compliant ■Supports DVB-ASI at 270 Mbps
■Multi standard operation from 143 Mbps to 360 Mbps ■Cable length indicator for SD-SDI data rates
■Maximum cable length adjustment for SD-SDI data rates ■Carrier detect and mute functionality for SD-SDI data rates ■Equalizer bypass mode
■Seamless connection with HOTLink II? family and HOTLink ? receiver
■Equalizes up to 350m of Canare L-5CFB and Belden 1694A coaxial cable at 270 Mbps ■Low power 160 mW at 3.3V ■Single 3.3V supply ■16-pin SOIC
■0.18 μm CMOS technology ■Pb-free and RoHS compliant
■Uses Cypress CLEANLink? technology ■
Pin compatible to existing equalizer devices
Functional Description
The CYV270M0101EQ is an adaptive video cable equalizer designed to equalize and restore signals received over 75Ωcoaxial cable. The equalizer meets SMPTE 259M data rates and is optimized for performance at 270 Mbps. The CYV270M0101EQ is optimized to equalize up to 350m of Canare L-5CFB and Belden 1694A coaxial cable at 270 Mbps.The CYV270M0101EQ connects seamlessly to the HOTLink II family of transceivers and HOTLink receivers.
The CYV270M0101EQ has DC restoration for compensation of the DC content of the SMPTE pathological patterns. A cable length indicator (CLI) provides an indication of the cable length equalized at SD-SDI data rates. The maximum cable length adjust (MCLADJ) sets the approximate maximum cable length to equalize. The CYV270M0101EQ differential serial outputs (SDO, SDO) mute when the approximate cable length set by MCLADJ is reached. CD/MUTE is a bidirectional pin that provides an indication of the signal present at the equalizer inputs. It also controls muting the outputs of the equalizer.Power consumption is typically 160 mW at 3.3V.
Serial Links Copper Cable CYV270M0101EQ
Connections Equalizer System Connection Diagram
Cable Driver
HOTLink II Serializer
HOTLink II Deserializer
Adaptive Cable Equalizer
Equalizer Block Diagram
Pinouts
Table 1. Pin Descriptions - CYV270M0101EQ Single Channel Cable Equalizer
Name IO Characteristics Signal Description
Control Signals
CLI Analog Output Cable Length Indicator. CLI provides an analog voltage proportional to the equalized
cable length.
CD/MUTE LVTTL IO Carrier Detect/Mute Indicator.
Output:
When the incoming data stream is present and the cable length does not exceed that set
by MCLADJ, the CD/MUTE outputs a voltage less than 0.8V.
When the incoming data stream is not present or the cable length exceeds that set by
MCLADJ, the CD/MUTE outputs a voltage greater than 2.8V.
Input:
When the CD/MUTE pin is set LOW, the equalizer’s differential serial outputs are not muted.
When the CD/MUTE pin is set HIGH, the equalizer’s differential serial outputs are muted. MCLADJ Analog Input Maximum Cable Length Adjust. The maximum equalized cable length is set by the
voltage applied to the MCLADJ input. When the maximum cable length set by MCLADJ is
reached, CD is driven high and the differential output is muted.
If MCLADJ functionality is not needed, this pin should be left floating or tied to ground to
allow maximum equalized cable length.
BYPASS LVTTL Input Equalizer Bypass. When BYPASS is set HIGH, the signal presented at the equalizer’s
differential serial inputs (SDI, SDI) is routed to the equalizer’s differential serial outputs
(SDO, SDO) without equalizing.
When BYPASS is set LOW, the incoming video data stream is equalized and presented at
the equalizer‘s serial differential outputs (SDO, SDO).
In equalizer bypass mode, CD/MUTE is not functional.
AGC±Analog Automatic Gain Control. Place a capacitor of 1 μF between the AGC± pins.
SDO, SDO Differential
Output Differential Serial Outputs. The equalized serial video data stream is presented at the SDO/SDO differential serial CML output.
SDI, SDI Differential
Input Differential Serial Inputs. SDI/SDI accepts either a single-ended or differential serial video data stream over 75Ω coaxial cable.
Power
VCC Power+3.3V Power.
GND Gnd Connect to Ground.
Equalizer Operation
The CYV270M0101EQ is an adaptive video cable equalizer designed to equalize standard definition (SD) serial digital interface (SDI) video data streams. The CYV270M0101EQ equalizer is optimized to equalize up to 350m of Canare L-5CFB and Belden 1694A cable at 270 Mbps. The device contains one power supply and typically consumes 160 mW power at 3.3V. The adaptive equalizer meets the SMPTE 259M and DVB-ASI video standards. It meets all pathological requirements for SMPTE 259M as defined by RP178. The CYV270M0101EQ Video Cable Equalizer is auto adaptive from 143 Mbps to 360 Mbps.
The CYV270M0101EQ equalizer has variable gain and multiple equalization stages that reverse the effects of the cable. This equalization is achieved by separate regulation of the lower and higher frequency components in the signal to give a clean output eye diagram. The CYV270M0101EQ has DC restoration to compensate the DC content of the SMPTE pathological patterns. SDI, SDI
The CYV270M0101EQ accepts single-ended or differential serial video data streams over 75Ω coaxial cable. It is recom-mended to AC couple the SDI and SDI inputs as they are inter-nally biased to 1.2V.
SDO, SDO
The CYV270M0101EQ has differential serial output interface drivers that use current mode logic [CML] drivers to provide source matching for the transmission line. These outputs are either AC coupled or DC coupled to the HOTLink II SerDes device.
CLI
Cable Length Indicator (CLI) is an analog output that gives an output voltage proportional to the equalized cable length. CLI gives an approximation of the length of cable at the differential serial inputs (SDI, SDI). CLI works at standard definition (SD) data rates. The graph in Figure 3 on page 7 illustrates the CLI output voltage at various Belden 1694A cable lengths. With an increase in cable length, CLI output voltage decreases.MCLADJ
Maximum Cable Length Adjust (MCLADJ) sets the approximate maximum amount of cable to be equalized.
If the MCLADJ voltage is greater than the CLI output voltage, CD is driven high and the equalizer serial differential outputs (SDO, SDO) are muted. If the MCLADJ voltage is less than CLI voltage, then the equalizer’s differential serial outputs (SDO, SDO) are not muted and the incoming data stream is equalized. The graph in Figure 2 on page 7 illustrates the voltage required at MCLADJ input to equalize various Belden 1694A cable lengths for SD data rates. If MCLADJ functionality is not required, this pin should be left floating or tied to ground to allow maximum equalized cable length.
CD/MUTE
Carrier Detect/MUTE (CD/MUTE) is a bidirectional pin that provides an indication of the signal present at the equalizer’s input, or it controls the muting of the equalizer’s output.
If CD/MUTE is used as an output and the incoming data stream is not present or the cable length exceeds that set by MCLADJ, the voltage at the CD/MUTE output is greater than 2.8V. If CD/MUTE is used as an output, the incoming data stream is present and the cable length does not exceed that set by MCLADJ, then the voltage at the CD/MUTE output is less than 0.8V.
If CD/MUTE is used as an input, and set LOW, the equalizer serial outputs are not muted. If the CD/MUTE is used as an input and is set HIGH, then the equalizer serial outputs are muted. When an invalid signal or a signal transmitted with a launch amplitude of less than 500 mV at SD data rates is received, the equalizer’s serial outputs are muted and the MCLADJ setting is overwritten.
BYPASS
The CYV270M0101EQ has a bypass mode that allows the user to bypass the equalizer’s equalization and DC restoration functions. When the Bypass mode is tied to V CC, the signal presented at the equalizer’s differential serial inputs (SDI, SDI) is routed to the equalizer’s differential serial outputs (SDO, SDO) without performing equalization.
When BYPASS is tied to GND, the incoming video data stream is equalized and presented at the equalizer‘s differential serial outputs (SDO, SDO).
In equalizer bypass mode, CD/MUTE is not functional.
AGC
Place a capacitor of 1 μF between the AGC± pins of the CYV270M0101EQ equalizer.
Maximum Ratings
Exceeding maximum ratings may shorten the useful life of the device. These user guidelines are not tested.
Storage Temperature..................................–65°C to +150°C Ambient Temperature with
Power Applied ............................................–55°C to +125°C Supply Voltage to Ground Potential................–0.5V to +3.8V DC Voltage Applied to Outputs
in High Z State.......................................–0.5V to V CC + 0.5V DC Input Voltage .....................................–0.5V to V CC +0.5V Electro Static Discharge (ESD) HBM.......................> 2000 V (JEDEC EIA/JESD-A114A)
Latch Up Current....................................................> 200 mA
Power Up Requirements
The CYV270M0101EQ contains one power supply. The voltage on any input or IO pin must not exceed the power pin during power up.
Operating Range
Range Ambient Temperature V CC Commercial
0°C to +70°C
+3.3V ±5%
Notes
1.Production test.
2.Calculated results from production test.
3.Not tested. Based on characterization.
DC Electrical Characteristics
Parameter Description
Test Conditions
Min Typ Max Unit V CC Supply Voltage [1]– 3.135 3.3 3.465V P D Power Consumption [2]–125160190mW I S Supply Current [1]
–
384860mA V CMOUT Output Common Mode Voltage [1]Load = 50Ω–V CC – ΔV SDO /2
= 2.9
–V V CMIN
Input Common Mode Voltage [1] (Bypass = High)
–1 1.4V Input Common Mode Voltage [1] (Bypass = Low)
–0 2.9V –CLI DC Voltage (0m)[1]– 2.2 2.65 2.95V –CLI DC Voltage (No Signal)[1]– 1.5
1.9
2.3
V –Floating MCLADJ DC Voltage [1]– 1.3V –
MCLADJ Range [3]
–
0.40.72 1.02V V CD/MUTE(OH)CD/MUTE Output Voltage [1]
Carrier Not Present 2.8––V V CD/MUTE(OL)Carrier Present ––0.8V V CD/MUTE CD/MUTE Input Voltage Required to Force Outputs to Mute [1]
Min to Mute 2.5––V V CD/MUTE
CD/MUTE Input Voltage Required to Force Active [1]
Max to Activate
–
–
1
V
AC Electrical Characteristics
Parameter Description Test Conditions Min Typ Max Unit –Serial Input Data Rate[1]–143–360Mbps V SDI Input Voltage Swing Single-ended, at the transmitter,
SD data rate
500[5]1200mV ΔV SDO Output Voltage Swing[1]Differential p-p, 50Ω load 450700950mV
–Output Jitter for Various Cable
Lengths and Data Rates 270 Mbps
Belden 1694A: 0-350m
Canare L-5CFB: 0-350m
800 mV transmit amplitude
Equalizer pathological pattern
–0.2[1]–UI
–Output Rise/Fall Time[3, 4]20% - 80%80120350ps –Mismatch in Rise/Fall Time[3, 4]–––30ps –Duty Cycle Distortion[3, 4]SD Color Bar Pattern–0.03–UI –Overshoot[3, 4]–––10%–Input Return Loss[3, 4]–-15––dB –Input Resistance[3]Single-ended– 2.5–kΩ–Input Capacitance[3]Single-ended–1–pF –Output Resistance[3]Single-ended–50–Ω
Notes
4.Not tested. Guaranteed by design simulations.
5.Based on characterization across temperature and voltage with 350m of Belden 1694A cable, transmitting SMPTE Equalizer Pathological Test Pattern.
Typical Performance Graphs
(Unless otherwise stated, V CC = 3.3V, T A = 25°C)
Figure 2. MCLADJ Input Voltage vs. Belden 1694A Cable Length at SD-SDI Data Rate
Figure 3. CLI Output Voltage vs. Belden 1694A Cable Length at SD-SDI Data Rate
Typical Application Circuit
Ordering Information
Ordering Code Package Name Package Type Operating
Range CYV270M0101EQ-SXC SZ16.15Pb-Free 16-Pin 150 Mil SOIC 0 to 70°C
Package Dimensions
Figure 5. 16-Pin (150 Mil) SOIC S16.15
Document Number: 001-06830 Rev. *B Revised October 25, 2007Page 10 of 10
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Document History Page
Document Title: CYV270M0101EQ Adaptive Video Cable Equalizer Document Number: 001-06830Rev.Ecn No.Issue Date Orig. Of Change Description Of Change
**427547SEE ECN BCD New preliminary datasheet
*A 663916SEE ECN FRE Updated AC and DC parameters. Changed datasheet status from preliminary to final
*B
1396423
SEE ECN
UKK/AESA
Updated AC and DC electrical characteristics and pin description of CD/MUTE and MCLADJ