CLC021
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CLC021 SMPTE 259M Digital Video Serializer with EDH Generation and Insertion
Check for Samples: CLC021
1FEATURES APPLICATIONS
2• SMPTE 259M Serial Digital Video Standard • SMPTE 259M Parallel-to-Serial Digital Video
Compliant Interfaces for:
• Supports All NTSC and PAL Standard – Video Cameras
Component and Composite Serial Video Data – VTRs
Rates – Telecines
• No External Serial Data Rate Setting or VCO – Video Test Pattern Generators and Digital
Filtering Components Required (1) Video Test Equipment
• Fast VCO Lock Time: <75 µs at 270 Mbps – Video Signal Generators
• Built-In Self-Test (BIST) and Video Test Pattern • Non-SMPTE Video Applications
Generator (TPG) with 16 Internal Patterns (1) • Other High Data Rate Parallel/Serial Video and
• Automatic EDH Character and Flag Generation Data Applications
and Insertion per SMPTE RP 165
• Non-SMPTE Mode Operation as Parallel-to- DESCRIPTION
Serial Converter The CLC021 SMPTE 259M Digital Video Serializer
• NRZ-to-NRZI Conversion Control with EDH Generation and Insertion is a monolithic
integrated circuit that encodes, serializes and
• HCMOS/LSTTL-Compatible Data and Control transmits bit-parallel digital data conforming to
Inputs and Outputs for CLC021AVGZ-5.0, SMPTE 125M and 267M component video and
LVCMOS for CLC021AVGZ-3.3 SMPTE 244M composite video standards. The
• 75ΩECL-Compatible, Differential, Serial Cable- CLC021 can also serialize other 8- or 10-bit parallel
Driver Outputs data. The CLC021 operates at data rates from below
100 Mbps to over 400 Mbps. The serial data clock
• Single Power Supply Operation: 5V frequency is internally generated and requires no
(CLC021AVGZ-5.0) or 3.3V (CLC021AVGZ-3.3) external frequency setting, trimming or filtering
in TTL or ECL Systems components*.
• Low Power: Typically 235 mW
• JEDEC 44-Lead Metric PQFP Package
• Commercial Temperature Range 0°C to +70°C
(1) Patents Applications Made or Pending.
TYPICAL APPLICATION
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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DESCRIPTION (CONTINUED)
Functions performed by the CLC021 include: parallel-to-serial data conversion, ITU-R BT.601-4 input data
clipping, data encoding using the SMPTE polynomial (X9+X4+1), data format conversion from NRZ to NRZI,
parallel data clock frequency multiplication and encoding with the serial data, and differential, serial output data
driving. The CLC021 has circuitry for automatic EDH character and flag generation and insertion per SMPTE RP-
165. The CLC021 has an exclusive built-in self-test (BIST) and video test pattern generator (TPG) with 16
component video test patterns: reference black, PLL and EQ pathologicals and modified colour bars in 4:3 and
16:9 raster formats for NTSC and PAL formats*.
The CLC021 has inputs for enabling sync detection, non-SMPTE mode operation, enabling the EDH function,
NRZ/NRZI mode control and an external reset control. Outputs are provided for H, V and F bits, new TRS sync
character position indication, ancilliary data header detection, NTSC/PAL raster indication and PLL lock detect.
Separate power pins for the output driver, VCO and the serializer improve power supply rejection, output jitter
and noise performance.
The CLC021AVGZ-5.0V is powered by a single +5V supply. The CLC021AVGZ-3.3V is powered by a single
+3.3V supply. Power dissipation is typically 235 mW including two 75Ωback-matched output loads. The device is
packaged in a JEDEC metric 44-lead PQFP.
BLOCK DIAGRAM
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS (1)(2)
Supply Voltage (VDD−VSS) CLC021AVGZ-5.0V 6.0V
CLC021AVGZ-3.3V 4.0V
CMOS/TTL Input Voltage (VI) CLC021AVGZ-5.0V −0.5V to VDD+0.5V
CLC021AVGZ-3.3V -0.3V to VDD+0.3V
CMOS/TTL Output Voltage (VO) CLC021AVGZ-5.0V −0.5V to VDD+0.5V
CLC021AVGZ-3.3V -0.3V to VDD+0.3V
CMOS/TTL Input Current (single input) VI= VSS −0.5V: −5 mA
VI= VDD +0.5V: +5 mA
Input Current, Other Inputs ±1 mA
CMOS/TTL Output Source/Sink Current ±16 mA
SDO Output Source Current 22 mA
Package Thermal θJA 44-lead Metric PQFP (@ 0 LFM airflow) 60°C/W
Resistance (@ 500 LFM airflow) 43°C/W
θJC 44-lead Metric PQFP 17°C/W
Storage Temp. Range −65°C to +150°C
Junction Temperature +150°C
Lead Temperature Soldering 4 Sec +260°C
ESD Rating (HBM) 2 kV
ESD Rating (MM) 150V
Transistor Count 33,400
(1) Absolute Maximum Ratings are those parameter values beyond which the life and operation of the device cannot be ensured. The
stating herein of these maximums shall not be construed to imply that the device can or should be operated at or beyond these values.
The table of Electrical Characteristics specifies acceptable device operating conditions.
(2) It is anticipated that this device will not be offered in a military qualified version. If Military/Aerospace specified devices are required,
please contact the Texas Instruments Sales Office / Distributors for availability and specifications.
RECOMMENDED OPERATING CONDITIONS
Supply Voltage (VDD−VSS) CLC021AVGZ-5.0 5.0V ±10%
CLC021AVGZ-3.3 3.3V ±10%
CMOS/TTL Input Voltage VSS to VDD
Maximum DC Bias on SDO pins CLC021AVGZ-5.0 3.0V ±10%
CLC021AVGZ-3.3 1.3V ±10%
PCLK Frequency Range 10 to 40MHz
PCLK Duty Cycle 45 to 55%
DNand PCLK Rise/Fall Time 1.0 to 3.0 ns
Operating Free Air Temperature (TA) 0°C to +70°C
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DC ELECTRICAL CHARACTERISTICS—CLC021AVGZ-5.0
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1)(2).
Symbol Parameter Conditions Reference Min Typ Max Units
VIH Input Voltage High Level 2.0 VDD V
VIL Input Voltage Low Level VSS 0.8 V
All CMOS Inputs
IIH Input Current High Level VIH = VDD +40 +60 µA
IIL Input Current Low Level VIL = VSS -1 -20 µA
VOH CMOS Output Voltage High IOH =−10 mA 2.4 4.7 VDD V
Level All CMOS Outputs
VOL CMOS Output Voltage Low IOL = +10 mA 0.0 0.3 VSS + 0.5V V
Level
VSDO Serial Driver Output Voltage RL= 75Ω1%,
RREF = 1.69 kΩ1%, SDO, SDO 700 800 900 mVP-P
See Figure 3
IDD Power Supply Current, Total RL= 75Ω1%,
RREF = 1.69 kΩ1%,
PCLK = 27 MHz, NTSC 47 60 mA
Colour Bar Pattern,
See Figure 3
(1) Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated
referenced to VSS = 0V.
(2) Typical values are stated for VDD = +5.0V (CLC021AVGZ-5.0) or +3.3V (CLC021AVGZ-3.3) and TA= +25°C.
DC ELECTRICAL CHARACTERISTICS—CLC021AVGZ-3.3
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1)(2).
Symbol Parameter Conditions Reference Min Typ Max Units
VIH Input Voltage High Level 2.0 VDD V
VIL Input Voltage Low Level VSS 0.6 V
All CMOS Inputs
IIH Input Current High Level VIH = VDD +22 +60 µA
IIL Input Current Low Level VIL = VSS -1 -20 µA
VOH CMOS Output Voltage High IOH =−8 mA 2.4 3.0 VDD V
Level All CMOS Outputs
VOL CMOS Output Voltage Low IOL = +8 mA 0.0 0.3 VSS + 0.5V V
Level
VSDO Serial Driver Output Voltage RL= 75Ω1%,
RREF = 1.69 kΩ1%, SDO, SDO 720 800 880 mVP-P
See Figure 3
IDD Power Supply Current, Total RL= 75Ω1%,
RREF = 1.69 kΩ1%,
PCLK = 27 MHz, NTSC 33 55 mA
Colour Bar Pattern,
See Figure 3
(1) Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated
referenced to VSS = 0V.
(2) Typical values are stated for VDD = +5.0V (CLC021AVGZ-5.0) or +3.3V (CLC021AVGZ-3.3) and TA= +25°C.
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AC ELECTRICAL CHARACTERISTICS—CLC021AVGZ-5.0
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1).
Symbol Parameter Conditions Reference Min Typ Max Units
BRSDO Serial Data Rate See (2) SDO, SDO 100 400 Mbps
Reference Clock
FPCLK PCLK 10 40 MHz
Input Frequency
Reference Clock Duty PCLK 45 50 55 %
Cycle
tr, tfRise Time, Fall Time DN, PCLK 1.0 1.5 3.0 ns
tjSerial Output Jitter 270 Mbps (3), See Figure 3 220 psP-P
tjit Serial Output Jitter See (2)(4) 100 200 psP-P
SDO, SDO
tr, tfRise Time, Fall Time 20%–80% (2)(4) 500 800 1500 ps
Output Overshoot See (4) 1 %
tLOCK Lock Time See (2)(5) 75 µs
tSU Setup Time See (4) and Figure 4 DNto PCLK 3 2 ns
tHLD Hold Time See (4) and Figure 4 DNfrom PCLK 3 2 ns
LGEN Output Inductance See (4) 6 nH
SDO, SDO
RGEN Output Resistance See (4) 25k Ω
(1) Typical values are stated for VDD = +5.0V (CLC021AVGZ-5.0) or +3.3V (CLC021AVGZ-3.3) and TA= +25°C.
(2) RL= 75Ω, AC-coupled @ 270 Mbps, RREF = 1.69 kΩ1%, See TEST LOADS and Figure 3.
(3) CLC021 mounted in the SD021EVK board, configured in BIST mode (NTSC colour bars) with PCLK = 27 MHz derived from Tektronix
TG2000 black-burst reference. Timing jitter measured with Tektronix VM700T using jitter measurement FFT mode, frame rate, 1 kHz
filter bandwidth, Hanning window.
(4) Specification is ensured by design.
(5) Measured from rising-edge of first PCLK cycle until Lock Detect output goes high (true).
AC ELECTRICAL CHARACTERISTICS—CLC021AVGZ-3.3
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1).
Symbol Parameter Conditions Reference Min Typ Max Units
BRSDO Serial Data Rate See (2) SDO, SDO 100 400 Mbps
Reference Clock
FPCLK PCLK 10 40 MHz
Input Frequency
Reference Clock Duty PCLK 45 50 55 %
Cycle
tr, tfRise Time, Fall Time DN, PCLK 1.0 1.5 3.0 ns
tjSerial Output Jitter 270 Mbps (3), See Figure 3 220 psP-P
tjit Serial Output Jitter See (2)(4) 100 200 psP-P
SDO, SDO
tr, tfRise Time, Fall Time 20%–80% (2)(4) 500 800 1500 ps
Output Overshoot See (4) 1 %
tLOCK Lock Time See (2)(5) 75 µs
tSU Setup Time See (4) and Figure 4 DNto PCLK 4 2 ns
tHLD Hold Time See (4) and Figure 4 DNfrom PCLK 4 2 ns
LGEN Output Inductance See (4) 6 nH
SDO, SDO
RGEN Output Resistance See (4) 25k Ω
(1) Typical values are stated for VDD = +5.0V (CLC021AVGZ-5.0) or +3.3V (CLC021AVGZ-3.3) and TA= +25°C.
(2) RL= 75Ω, AC-coupled @ 270 Mbps, RREF = 1.69 kΩ1%, See TEST LOADS and Figure 3.
(3) CLC021 mounted in the SD021EVK board, configured in BIST mode (NTSC colour bars) with PCLK = 27 MHz derived from Tektronix
TG2000 black-burst reference. Timing jitter measured with Tektronix VM700T using jitter measurement FFT mode, frame rate, 1 kHz
filter bandwidth, Hanning window.
(4) Specification is ensured by design.
(5) Measured from rising-edge of first PCLK cycle until Lock Detect output goes high (true).
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DEVICE OPERATION
The CLC021 SMPTE 259M Serial Digital Video Serializer is used in digital video signal origination equipment:
cameras, video tape recorders, telecines and video test and other equipment. It converts parallel component or
composite digital video signals into serial format. Logic levels within this equipment are normally TTL-compatible
as produced by CMOS or bipolar logic devices. The encoder produces ECL-compatible serial digital video (SDV)
signals conforming to SMPTE 259M-1997. The CLC021 operates at all standard SMPTE and ITU-R parallel data
rates. In addition, the CLC021 can serialize other 8- and 10-bit data.
VIDEO DATA PROCESSING CIRCUITS
The input data register accepts 8- or 10-bit parallel data and clock signals having HCMOS/LSTTL-compatible
signal levels. Parallel data may conform to any of several standards: SMPTE 125M, SMPTE 267M, SMPTE
244M or ITU-R BT.601. If the data is 8-bit, it is converted to a 10-bit representation according to the type of data
being input: component 4:2:2 per SMPTE 259M paragraph 7.1.1, composite NTSC per paragraph 8.1.1 or
composite PAL per paragraph 9.1.1. Eight-bit video data corresponds to the upper 8 bits of the 10-bit video data
word and is MSB-aligned. Output from this register feeds the TRS (sync) character detector, SMPTE polynomial
generator/serializer and the EDH polynomial generators/serializers and control system. All parallel data and clock
inputs have internal pull-down devices.
The sync detector or TRS character detector receives data from the input register. The detection function is
controlled by Sync Detect Enable, a low-true, TTL-compatible, external signal. Synchronization words, the timing
reference signals (TRS), start-of-active-video (SAV) and end-of-active-video (EAV) are defined in SMPTE 125M
and 244M. The sync detector supplies control signals to the SMPTE polynomial generator to identify the
presence of valid video data, and to the EDH control block. In SMPTE mode, TRS character LSB-clipping as
prescribed in ITU-R BT.601 is enabled. LSB-clipping causes all TRS characters with a value between 000h and
003h to be forced to 000h and all TRS characters with a value between 3FCh and 3FFh to be forced to 3FFh.
Clipping is done prior to encoding or EDH character generation. This function is disabled in non-SMPTE mode
operation.
Outputs from the sync detector are:
1. H, V, and F or Line/Field ID—For component video, these are registered outputs corresponding to input
TRS data bits 6, 7 and 8, respectively. These outputs are disabled in non-SMPTE mode. The outputs are
active HIGH-true. For composite video, these outputs correspond to the line and field ID encoded as input
parallel data bits 2 (MSB) through 0. These outputs are registered for the duration of the applicable field.
2. NSP—New Sync Position: A function and output indicating that a new or out-of-place TRS character has
been detected. This output remains active for at least one horizontal line period (reset by EAV) or unless re-
activated by a subsequent new or out-of-place TRS. Activation of this function flushes the existing state of
the machine reseting the EDH generator, SMPTE polynomial generator, serializer and NRZ-NRZI converter.
This function is disabled in non-SMPTE mode operation. The output is active HIGH-true.
3. ANC—Ancilliary data location output: Indicates that the ancilliary data header (component) or flag
(composite) has been detected. The output is a pulse having a duration of one PCLK period. The output is
active HIGH-true.
SMPTE POLYNOMIAL GENERATOR AND CONTROLS
The SMPTE Mode input allows the CLC021 to function both as a full SMPTE 259M encoder or general-purpose
8- or 10-bit serializer. SMPTE mode is enabled when this input is LOW. Non-SMPTE mode is enabled when this
pin is HIGH. This pin is pulled internally to VSS when unconnected. When in SMPTE mode, the SMPTE
polynomial generator; TRS sync detection circuitry; EDH control circuitry; H, V, F and NSP outputs and TRS
clipping are enabled.
The SMPTE polynomial generator accepts the parallel video data and encodes it using the polynomial X9+ X4
+ 1 as specified in SMPTE 259M (1997 rev.), paragraph 5 and Annex C. The transmission bit order is LSB-first,
per paragraph 6.
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NRZ-TO-NRZI CONVERTER
The NRZ-to-NRZI converter accepts NRZ serial data from the SMPTE and EDH polynomial genertors and
converts it to NRZI using the polynomial (X + 1) per SMPTE 259M, paragraph 5.2 and Annex C. The converter's
output goes to the output buffer amplifier. The NRZ/NRZI input enables this conversion function. Conversion
from NRZ to NRZI is enabled when the input is a logic LOW. Conversion to NRZI is disabled when this input is a
logic-HIGH. This function is not affected by the SMPTE mode control input. The input pin is pulled internally to
VSS (NRZI enabled) when unconnected.
EDH SYSTEM OPERATION
The CLC021 has EDH character and flag generation and insertion circuitry which operates as proposed in
SMPTE RP-165. Inputs and circuitry are provided to control generation and automatic insertion of the EDH check
words at proper locations in the serial data output.
The EDH polynomial generators accept parallel data from the input register and generate 16-bit serial check
words using the polynomial X16 + X12 + X6+ 1. Separate calculations are made for each video field prior to
serialization. Separate CRCs for the full-field and active picture along with status flags are inserted and serially
transmitted with the other data. Upon being reset, the initial state of all EDH check characters is 00h.
The EDH control system accepts input from the sync detector and controls the EDH polynomial generator and
SMPTE/EDH polynomial insertion multiplexer. EDH Enable, an external TTL-compatible, low-true input, enables
this circuitry. The controller inserts the EDH check words in the serial data stream at the correct positions in the
ancilliary data space per SMPTE 259M paragraph 7.3, 8.4.4 or 9.4.4 and per SMPTE RP-165. Ancilliary data
space is formatted per SMPTE 291M.
The EDH Force control input causes the insertion of new EDH checkwords and flags into the serial output
regardless of the previous condition of EDH checkwords and flags in the input parallel data. This function may be
used in situations where video content has been editted thus making the previous EDH information invalid.
The NTSC/PAL output indicates the type of component or composite data standard being input to the CLC021.
This output is useful for troubleshooting or may be used to drive a panel indicator. The output is high when 625-
line PAL data is being input and low when 525-line NTSC data is being input.
PHASE-LOCKED LOOP AND VCO
The phase-locked loop (PLL) system generates the output serial data clock at 10× the parallel data clock
frequency. This system consists of a VCO, divider chain, phase-frequency detector and internal loop filter. The
VCO free-running frequency is internally set. The PLL automatically generates the appropriate frequency for the
serial clock rate using the parallel data clock (PCLK) frequency as its reference. Loop filtering is internal to the
CLC021. The VCO halts when no PCLK signal is present or is inactive. PCLK should be applied after power to the
device.
The VCO has separate VSSO and VDDO power supply feeds, pins 27 and 28, which may be supplied power via an
external low-pass filter, if desired. The PLL acquisition (lock) time is less than 75 µs @ 270 Mbps.
LOCK DETECT
The lock detect output (pin 26) of the phase-frequency detector is a logic HIGH when the loop is locked. The
output is CMOS/TTL-compatible and is suitable for driving other CMOS devices or an LED indicator. The Lock
Detect pin reports the status of the PLL. When PCLK is lost, it will switch low at the event.
SERIAL DATA OUTPUT BUFFER
The current-mode serial data outputs provide low-skew complimentary or differential signals. The output buffer
design can drive 75Ωcoaxial cables (AC-coupled) or 10K/100K ECL/PECL-compatible devices (DC-coupled).
Output levels are 800 mVP-P ±10% into 75ΩAC-coupled, back-matched loads. The output level is 400 mVP-P
±10% when DC-coupled into 75Ω. (See APPLICATION INFORMATION for details.) The 75Ωresistors connected
to the SDO outputs are back-matching resistors. No series back-matching resistors should be used. Output level
is controlled by the value of RREF connected to pin 35. The value of RREF is normally 1.69 kΩ, ±1%. The output
buffer is static when the device is in an out-of-lock condition. Separate VSSSD and VDDSD power feeds, pins, 37
and 40 are provided for the serial output driver.
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VDDmin
VSS
VSS
VSS
0ns min
PCLK
10%
90%
10%
90%
RESET
VDD
VDDmin
VSS
VSS 10%
PCLK
VDD
30Ps min
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POWER-ON RESET AND RESET INPUT
The CLC021 has an internally controlled, automatic, power-on-reset circuit. Reset clears TRS detection
circuitry, all latches, registers, counters and polynomial generators, sets the EDH characters to 00h and disables
the serial output. The SDO outputs are tri-stated during power-on reset. The part will remain in the reset
condition until the parallel input clock is applied.
An active-HIGH-true, manual reset input is available at pin 1. It resets both the digital and PLL blocks. The reset
input has an internal pull-down device and is inactive when unconnected.
It is recommended that PCLK not be asserted until at least 30 µs after power has reached VDDmin. See Figure 5.
If manual reset is used during power-on, then PCLK may be asserted at any time as long as manual reset is not
de-asserted until VDDmin is reached. See Figure 6.
Figure 5. Power-On Reset Sequence
Figure 6. Power-On Reset Sequence with Manual Reset
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BUILT-IN SELF-TEST (BIST)
The CLC021 has a built-in self-test (BIST) function. The BIST performs a comprehensive go/no-go test of the
device. The test uses either a full-field colour bar for NTSC or a PLL pathological for PAL as the test data
pattern. Data is input internally in the input data register, processed through the device and tested for errors. A
go/no-go indication is given at the Test_Output. Table 1 gives device pin functions and Table 2 gives the test
pattern codes used for this function. The signal level at Test_Output, pin 3, indicates a pass or fail condition.
The BIST is initiated by applying the code for the desired BIST to D0 through D3 (D9 through D4 are 00h) and a
27 MHz clock at the PCLK input. Since all parallel data inputs are equipped with an internal pull-down device, only
those inputs D0 through D3 which require a logic-1 need be pulled high. After the Lock_Detect output goes high
indicating the VCO is locked on frequency, TPG_Enable, pin 29, is taken to a logic high. The Lock_Detect output
may be temporarily connected to TPG_Enable to automate BIST operation. Test_Output, pin 3, is monitored for
a pass/fail indication. If no errors have been detected, this output will go to a logic high level approximately 2 field
intervals after TPG_Enable is taken high. If errors have been detected in the internal circuitry of the CLC021,
Test_Output will remain low until the test is terminated. The BIST is terminated by taking TPG _Enable to a logic
low. Continuous serial data output is available during the test.
Figure 7. Built-In Self-Test Control Sequence
TEST PATTERN GENERATOR
The CLC021 includes an on-board test pattern generator (TPG). Four full-field component video test patterns
for both NTSC and PAL standards, and 4x3 and 16x9 raster sizes are produced. The test patterns are: flat-field
black, PLL pathological, equalizer (EQ) pathological and a modified 75%, 8-colour vertical bar pattern. The
pathologicals follow recommendations contained in SMPTE RP 178–1996 regarding the test data used. The
colour bar pattern does not incorporate bandwidth limiting coding in the chroma and luma data when transitioning
between the bars. For this reason, it may not be suitable for use as a visual test pattern or for input to video D-to-
A conversion devices unless measures are taken to restrict the production of out-of-band frequency components.
The TPG is operated by applying the code for the desired test pattern to D0 through D3 (D4 through D9 are
00h). Since all parallel data inputs are equipped with internal pull-down devices, only those inputs D0 through D3
which require a logic-1 need be pulled high. Next, apply a 27 MHz or 36 MHz signal, appropriate to the raster
size desired, at the PCLK input and wait until the Lock_Detect output goes true indicating the VCO is locked on
frequency. Then, take TPG_Enable, pin 29, to a logic high. The serial test pattern data appears on the SDO
outputs. The Lock_Detect output may be temporarily connected to TPG_Enable to automate TPG operation. The
TPG mode is exited by taking TPG_Enable to a logic low. Table 1 gives device pin functions for this mode.
Table 2 gives the available test patterns and selection codes.
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Figure 8. Test Pattern Generator Control Sequence
Table 1. BIST and Test Pattern Generator Control Functions
Pin Name Function
12 D0 TPG Code Input LSB
13 D1 TPG Code Input
14 D2 TPG Code Input
15 D3 TPG Code Input MSB
29 TPG_EN TPG Enable, Active High True
3 Test_Out BIST Pass/Fail Output. Pass=High (See text for Timing
Requirements)
Table 2. Component Video Test Pattern Selection(1)
Standard Frame Test Pattern D3 D2 D1 D0
NTSC 4x3 Flat-Field Black 0 0 0 0
NTSC 4x3 PLL Pathological 0 0 0 1
NTSC 4x3 EQ Pathological 0 0 1 0
NTSC 4x3 Colour Bars, 75%, 8-Bars (modified, see text), BIST 0 0 1 1
PAL 4x3 Flat-Field Black 0 1 0 0
PAL 4x3 PLL Pathological, BIST 0 1 0 1
PAL 4x3 EQ Pathological 0 1 1 0
PAL 4x3 Colour Bars, 75%, 8-Bars (modified, see text) 0 1 1 1
NTSC 16x9 Flat-Field Black 1 0 0 0
NTSC 16x9 PLL Pathological 1 0 0 1
NTSC 16x9 EQ Pathological 1 0 1 0
NTSC 16x9 Colour Bars, 75%, 8-bars (modified, see text) 1 0 1 1
PAL 16x9 Flat-Field Black 1 1 0 0
PAL 16x9 PLL Pathological 1 1 0 1
PAL 16x9 EQ Pathological 1 1 1 0
PAL 16x9 Colour Bars, 75%, 8-Bars (modified, see text) 1 1 1 1
(1) D9 through D4 = 0 (binary)
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PIN DESCRIPTIONS(1)
Pin Name Description
1 Reset Manual Reset Input (High True)
2 NRZ-NRZI NRZ-to-NRZI Conversion Control (NRZ=High, NRZI=Low)
3 Test Out Test Out (BIST Pass/Fail Indicator)
4 VSS Negative Power Supply Input (Digital Logic)
5 VSS Negative Power Supply Input (Digital Logic)
6 VDD Positive Power Supply Input (Digital Logic)
7 VDD Positive Power Supply Input (Digital Logic)
8 EDH Force Force Insertion of New EDH and Flags in Serial Output Data (High True)
9 EDH Enable EDH Enable Input (Low True)
10 SMPTE Mode SMPTE/non-SMPTE Mode Select Input (SMPTE Mode=Low)
11 N/C No Connect
12 D0 Parallel Data Input (Internal Pull-Down to VSS)
13 D1 Parallel Data Input (Internal Pull-Down to VSS)
14 D2 Parallel Data Input (Internal Pull-Down to VSS)
15 D3 Parallel Data Input (Internal Pull-Down to VSS)
16 D4 Parallel Data Input (Internal Pull-Down to VSS)
17 D5 Parallel Data Input (Internal Pull-Down to VSS)
18 D6 Parallel Data Input (Internal Pull-Down to VSS)
19 D7 Parallel Data Input (Internal Pull-Down to VSS)
20 D8 Parallel Data Input (Internal Pull-Down to VSS)
21 D9 Parallel Data Input (Internal Pull-Down to VSS)
22 PCLK Parallel Clock Input (Internal Pull-Down to VSS)
23 H/Line-Field b0 (LSB) H-Bit Output (Component); Line-Field ID (Composite)
24 V/Line-Field b1 V-Bit Output (Component); Line-Field ID (Composite)
25 F/Line-Field b2 (MSB) F-Bit Output (Component); Line-Field ID (Composite)
26 Lock Detect Lock Detector Output (High True)
27 VSSO Negative Power Supply Input (PLL Supply)
28 VDDO Positive Power Supply Input (PLL Supply)
29 TPG Enable TPG Enable (High True)
30 VSSOD Negative Power Supply Input (PLL Digital Supply)
31 VSSOD Negative Power Supply Input (PLL Digital Supply)
32 VDDOD Positive Power Supply Input (PLL Digital Supply)
33 VDDOD Positive Power Supply Input (PLL Digital Supply)
34 N/C No Connect
35 RREF Output Level Reference Resistor (1.69 kΩ, 1% Nominal Value)
36 VDDOD Positive Power Supply Input (PLL Digital Supply)
37 VSSSD Negative Power Supply Input (Output Driver)
38 SDO Serial Data True Output
39 SDO Serial Data Complement Output
40 VDDSD Positive Power Supply Input (Output Driver)
41 Sync Detect Enable Parallel Data Sync Detection Enable Input (Low True)
42 NSP New Sync Position Output
43 ANC Ancilliary Data Header Flag Output
44 NTSC/PAL NTSC/PAL Mode Indicator Output (PAL=High, NTSC=Low)
(1) All CMOS/TTL inputs have internal pull-down devices.
14 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: CLC021
CLC021
www.ti.com
SNLS068H –MAY 2000–REVISED APRIL 2013
APPLICATION INFORMATION
A typical application circuit for the CLC021 is shown in Figure 9. This circuit demonstrates the capabilities of the
CLC021 and allows its evaluation in a variety of configurations. Assembled demonstration boards with more
comprehensive evaluation options are available, part number SD021-5EVK (5V device) or SD021-3EVK (3.3V
device). The boards may be ordered through any of Texas Instruments' sales offices. Complete circuit board
layouts and schematics including Gerber photoplot files, for the demonstration boards are available on Texas
Instruments' website in the application information for this device.
APPLICATION CIRCUIT
Figure 9. Typical Application Circuit
The SD021EVK application circuit boards, Figure 10, can accommodate different input and output drive and
loading options. Pin headers are provided for input and control I/O signal access. Install the appropriate value
resistor packs, 220Ωat RP1 and RP3 and 330Ωat RP2 and RP4, for TTL cabled interfaces before applying
input signals. Install 51Ωresistor packs at RP2 and RP4 for signal sources requiring such loading. Remove any
resistor packs at RP1 and RP3 when using 50Ωsource loading.
The board's outputs may be DC interfaced to PECL inputs by first installing 124Ωresistors at R1B and R2B,
changing R1A and R2A to 187Ωand replacing C1 and C2 with short circuits. The PECL inputs should be directly
connected to J1 and J2 without cabling. If 75Ωcabling is used to connect the CLC021 to the PECL inputs, the
voltage dividers used on the CLC021 outputs must be removed and re-installed on the circuit board where the
PECL device is mounted. This will provide correct termination for the cable and biasing for both the CLC021's
outputs and the PECL inputs. It is most important to note that a 75Ωor equivalent DC loading (measured with
respect to the negative supply rail) must always be installed at both of the CLC021's SDO outputs to obtain
proper signal levels from device. When using 75ΩThevenin-equivalent load circuits, the DC bias applied to the
SDO outputs should not exceed +3V (+1.3V for CLC021AVGZ-3.3) with respect to the negative supply rail. Serial
output levels should be reduced to 400 mVp-p by changing RREF to 3.4 kΩ. This may be done by removing the
Output Level shorting jumper on the post header.
Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 15
Product Folder Links: CLC021
CLC021
SNLS068H –MAY 2000–REVISED APRIL 2013
www.ti.com
The Test Out output is intended for monitoring by equipment having high impedance test loading (>500Ω). If the
Lock Detect output is to be externally monitored, the attached monitoring circuit should present a DC resistance
greater than 5 kΩso as not to affect Lock Detect indicator operation.
Connect LOCK DETECT to TPG ENABLE for test pattern generator function.
Remove RP1 & RP3 and replace RP2 & RP4 with 50Ωresistor packs for coax interfacing.
Install RP1-4 when using ribbon cable for input interfacing.
This board is designed for use with TTL power supplies only.
Figure 10. SD021EVK Schematic Diagram
16 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: CLC021
CLC021
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SNLS068H –MAY 2000–REVISED APRIL 2013
MEASURING JITTER
The test method used to obtain the timing jitter value given in the AC Electrical Specification table is based on
procedures and equipment described in SMPTE RP 192-1996. The recommended practice discusses several
methods and indicator devices. An FFT method performed by standard video test equipment was used to obtain
the data given in this data sheet. As such, the jitter characteristics (or jitter floor) of the measurement equipment,
particularly the measurement analyzer, become integral to the resulting jitter value. The method and equipment
were chosen so that the test can be easily duplicated by the design engineer using most standard digital video
test equipment. In so doing, similar results should be achieved. The intrinsic jitter floor of the CLC021's PLL is
approximately 25% of the typical jitter given in the electrical specifications. In production, device jitter is
measured on automatic IC test equipment (ATE) using a different method compatible with that equipment. Jitter
measured using this ATE yields values approximately 50% of those obtained using the video test equipment.
The jitter test setup used to obtain values quoted in the data sheet consists of:
• Texas Instruments SD021-5EVK (SD021-3EVK), CLC021 evaluation kit
• Tektronix TG2000 signal generation platform with DVG1 option
• Tektronix VM700T Option 1S Video Measurement Set
• Tektronix TDS 794D, Option C2 oscilloscope
• Tektronix P6339A passive probe
• 75Ωcoaxial cable, 3 ft., Belden 8281 or RG59 (2 required)
• ECL-to-TTL/CMOS level converter/amplifier see Figure 12.
Apply the black-burst reference clock from the TG2000 signal generator's BG1 module 27 MHz clock output to
the level converter input. The clock amplitude converter schematic is shown in Figure 12. Adjust the input bias
control to give a 50% duty cycle output as measured on the oscilloscope/probe system. Connect the level
translator to the SD021EVK board, connector P1, PCLK pins (the outer-most row of pins is ground). Configure the
SD021EVK to operate in the NTSC colour bars, BIST mode. Configure the VM700T to make the jitter
measurement in the jitter FFT mode at the frame rate with 1 kHz filter bandwidth and Hanning window. Configure
the setup as shown in Figure 11. Switch the test equipment on (from standby mode) and allow all equipment
temperatures stabilize per manufacturer's recommendation. Measure the jitter value after allowing the
instrument's reading to stabilize (about 1 minute). Consult the VM700T Video Measurement Set Option 1S Serial
Digital Measurements User Manual (document number 071-0074-00) for details of equipment operation.
The VM700T measurement system's jitter floor specification at 270 Mbps is given as 200 ps ±20% (100 ps ±5%
typical) of actual components from 50 Hz to 1 MHz and 200 ps +60%, -30% of actual components from 1 MHz to
10 MHz. To obtain the actual residual jitter of the CLC021, a root-sum-square adjustment of the jitter reading
must be made to compensate for the measurement system's jitter floor specification. For example, if the jitter
reading is 250 ps, the CLC021 residual jitter is the square root of (2502−2002) = 150 ps. The accuracy limits of
the reading as given above apply.
Figure 11. Jitter Test Circuit
Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Links: CLC021
CLC021
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SNLS068H –MAY 2000–REVISED APRIL 2013
Figure 13. Jitter Plots
PCB LAYOUT AND POWER SYSTEM BYPASS RECOMMENDATIONS
Circuit board layout and stack-up for the CLC021 should be designed to provide noise-free power to the device.
Good layout practice also will separate high frequency or high level inputs and outputs to minimize unwanted
stray noise pickup, feedback and interference. Power system performance may be greatly improved by using thin
dielectrics (4 to 10 mils) for power/ground sandwiches. This increases the intrinsic capacitance of the PCB power
system which improves power supply filtering, especially at high frequencies, and makes the value and
placement of external bypass capacitors less critical. External bypass capacitors should include both RF ceramic
and tantalum electrolytic types. RF capacitors may use values in the range 0.01 µF to 0.1 µF. Tantalum
capacitors may be in the range 2.2 µF to 10 µF. Voltage rating for tantalum capacitors should be at least 5X the
power supply voltage being used. It is recommended practice to use two vias at each power pin of the CLC021
as well as all RF bypass capacitor terminals. Dual vias reduce the interconnect inductance by up to half, thereby
reducing interconnect inductance and extending the effective frequency range of the bypass components.
Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 19
Product Folder Links: CLC021
CLC021
SNLS068H –MAY 2000–REVISED APRIL 2013
www.ti.com
The outer layers of the PCB may be flooded with additional VSS (ground) plane. These planes will improve
shielding and isolation as well as increase the intrinsic capacitance of the power supply plane system. Naturally,
to be effective, these planes must be tied to the VSS power supply plane at frequent intervals with vias. Frequent
via placement also improves signal integrity on signal transmission lines by providing short paths for image
currents which reduces signal distortion. The planes should be pulled back from all transmission lines and
component mounting pads a distance equal to the width of the widest transmission line or the thickness of the
dielectric separating the transmission line from the internal power or ground plane(s) whichever is greater. Doing
so minimizes effects on transmission line impedances and reduces unwanted parasitic capacitances at
component mounting pads.
In especially noisy power supply environments, such as is often the case when using switching power supplies,
separate filtering may be used at the CLC021's VCO and output driver power pins. The CLC021 was designed
for this situation. The digital section, VCO and output driver power supply feeds are independent (see and
CONNECTION DIAGRAM for details). Supply filtering may take the form of L-section or pi-section, L-C filters in
series with these VDD inputs. Such filters are available in a single package from several manufacturers. Despite
being independent feeds, all device power supplies should be applied simultaneously as from a common source.
The CLC021 is free from power supply latch-up caused by circuit-induced delays between the device's three
separate power feed systems.
20 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: CLC021
CLC021
www.ti.com
SNLS068H –MAY 2000–REVISED APRIL 2013
REVISION HISTORY
Changes from Revision G (April 2013) to Revision H Page
• Changed layout of National Data Sheet to TI format .......................................................................................................... 20
Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 21
Product Folder Links: CLC021
PACKAGE OPTION ADDENDUM
www.ti.com 10-Dec-2020
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
CLC021AVGZ-3.3/NOPB ACTIVE QFP PGB 44 96 RoHS & Green SN Level-3-260C-168 HR 0 to 70 CLC021A
VGZ-3.3
CLC021AVGZ-5.0/NOPB ACTIVE QFP PGB 44 96 RoHS & Green SN Level-3-260C-168 HR 0 to 70 CLC021A
VGZ-5.0
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 10-Dec-2020
Addendum-Page 2
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