(140 MHz speed grade only)
12 analog input channel mux
SCART fast blank support
Internal antialias filters
NTSC/PAL/SECAM color standards support
525p-/625p-component progressive scan
720p-/1080i-component HDTV support
Digitizes R
(140 MHz speed grade only)
24-bit digital input port supports data from DVI/HDMI Rx IC
Any-to-any, 3 × 3 color-space conversion matrix
Industrial temperature range (−40°C to +85°C)
12-bit 4:4:4/8-bit 4:2:2 DDR pixel output interface
Programmable interrupt request output pin
VBI data slicer (including teletext)
GB graphics up to 1280 × 1024 @ 75 Hz (SXGA)
APPLICATIONS
LCD/DLP™ rear projection HDTVs
PDP HDTVs
CRT HDTVs
LCD/DLP front projectors
LCD TV (HDTV ready)
HDTV STBs with PVR
Hard-disk-based video recorders
Multiformat scan converters
DVD recorders with progressive scan input support
AVR receiver
support
ADV7401
GENERAL DESCRIPTION
The ADV7401 is a high quality, single chip, multiformat video
decoder and graphics digitizer. This multiformat decoder
supports the conversion of PAL, NTSC, and SECAM standards
in the form of composite or S-video into a digital ITU-R BT.656
format. The ADV7401 also supports the decoding of a
component RGB/YPrPb video signal into a digital YCrCb or
RGB pixel output stream. The support for component video
includes standards such as 525i, 625i, 525p, 625p, 720p, 1080i,
1250i, and many other HD and SMPTE standards. Graphic
digitization is also supported by the ADV7401; it is capable of
digitizing RGB graphics signals from VGA to SXGA rates and
converting them into a digital RGB or YCrCb pixel output
stream. SCART and overlay functionality are enabled by the
ADV7401’s ability to simultaneously process CVBS and
standard definition RGB signals. The mixing of these signals is
controlled by the fast blank pin.
The ADV7401 contains two main processing sections. The first
standard definition processor (SDP), which processes all
is the
PAL, NTSC, and SECAM signal types. The second is the
component processor (CP), which processes YPrPb and RGB
component formats, including RGB graphics. For more specific
descriptions of the ADV7401 features, see the Detailed
Functionality and Detailed Description sections.
Rev. SpA
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Change to Crystal MHz Unit Value............................................. 13
Added Pixel Input Information to Table 9 and Table 10........... 17
4/05—Revision Sp0: Initial Version
Rev. SpA | Page 2 of 20
ADV7401
www.BDTIC.com/ADI
FUNCTIONAL BLOCK DIAGRAM
P29–P22
P19–P12
P9–P2
PIXEL
DATA
HS
VS
FIELD/DE
LLC1
SFL/
8
8
OUTPUT FIFO AND FORMATTER
8
SYNCOUT
INT
VBI DATA RECOVERY
STANDARD
AUTODETECTION
STANDARD DEFINITION PROCESSOR
DETECTION
MACROVISION
CVBS/Y
Y
LUMA
(5H MAX)
2D COMB
LUMA
RESAMPLE
LUMA
FILTER
EXTRACTION
DETECTION
AND
AGC
24
10
AV CODE
INSERTION
OFFSET
CONTROL
GAIN
CONTROL
FINE
CLAMP
DIGITAL
10
10
16
AND
FAST
BLANK
AV CODE
OVERLAY
CONTROL
INSERTION
(4H MAX)
RESAMPLE
FILTER
DEMOD
Y
Cr
Cb
CGMS DATA
COMPONENT PROCESSOR
MACROVISION
ACTIVE PEAK
Cb
Cr
CONTROL
RESAMPLE
SYNC
EXTRACT
SC
F
RECOVERY
Cr
CHROMA
CVBS
Cb
2D COMB
CHROMA
CHROMA
CHROMA
C
10
ADV7401
ANTI-
DATA
PREPROCESSOR
A/DCLAMP
ALIAS
101010
FILTER
12
AIN1
10
COLORSPACE
CONVERSION
AND
FILTERS
DECIMATION
DOWNSAMPLING
10
10
10
SOY
888
XTAL1
XTAL
DIGITAL INPUT
P40–P31
PORT
DVI or HDMI
24
P1–P0
P11–P10
P29–P20
05340-001
A/DCLAMP
A/DCLAMP
A/DCLAMP
ANTI-
ANTI-
ANTI-
ALIAS
FILTER
MUX
INPUT
CVBS
AIN12
S-VIDEO
YPrPb
TO
ALIAS
SCART–
FILTER
(RGB + CVBS)
GRAPHICS RGB
ALIAS
FILTER
FB
SCLK
SERIAL INTERFACE
SDA
SCLK2
CONTROL AND VBI DATA
SDA2
STDI
CLOCK GENERATION
SSPD
SYNC PROCESSING AND
ALSB
DCLK_IN
SOG
VS_IN
DE_IN
HS_IN
Figure. 1.
Rev. SpA | Page 3 of 20
ADV7401
www.BDTIC.com/ADI
ELECTRICAL CHARACTERISTICS
@ AVDD = 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.71 V to 1.89 V, nominal input range 1.6 V.
Operating temperature range, unless otherwise noted.
Table 1.
Parameter
STATIC PERFORMANCE
Resolution (each ADC) N 10 Bits
Integral Nonlinearity INL BSL at 27 MHz (at a 10-bit level) ±0.6 ±2.5 LSB
Integral Nonlinearity INL BSL at 54 MHz (at a 10-bit level) −0.6/+0.7 LSB
Integral Nonlinearity INL BSL at 74 MHz (at a 10-bit level) ±1.4 LSB
Integral Nonlinearity INL BSL at 110 MHz (at an 8-bit level)
Integral Nonlinearity INL BSL at 135 MHz (at an 8-bit level)
Differential Nonlinearity DNL At 27 MHz (at a 10-bit level) −0.2/+0.25 −0.99/+2.5 LSB
Differential Nonlinearity DNL At 54 MHz (at a 10-bit level) −0.2/+0.25 LSB
Differential Nonlinearity DNL At 74 MHz (at a 10-bit level) ±0.9 LSB
Differential Nonlinearity DNL At 110 MHz (at an 8-bit level)
Differential Nonlinearity DNL At 135 MHz (at an 8-bit level)
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input High Voltage V
Input Low Voltage V
Input Current I
All other input pins −10 +10 μA
Input Capacitance
DIGITAL OUTPUTS
Output High Voltage
Output Low Voltage
High Impedance Leakage Current I
All other output pins 10 μA
Output Capacitance
POWER REQUIREMENTS
Digital Core Power Supply DVDD 1.65 1.8 2 V
Digital I/O Power Supply DVDDIO 3.0 3.3 3.6 V
PLL Power Supply PVDD 1.71 1.8 1.89 V
Analog Power Supply AVDD 3.15 3.3 3.45 V
Digital Core Supply Current IDVDD CVBS input sampling at 54 MHz 105 mA
Graphics RGB sampling at 135 MHz 137 mA
SCART RGB FB sampling at 54 MHz 106 mA
Digital I/O Supply Current IDVDDIO CVBS input sampling at 54 MHz 4 mA
Graphics RGB sampling at 135 MHz 19 mA
PLL Supply Current IPVDD CVBS input sampling at 54 MHz 11 mA
Graphics RGB sampling at 135 MHz 12 mA
Analog Supply Current
Graphics RGB sampling at 135 MHz 242 mA
SCART RGB FB sampling at 54 MHz 269 mA
Power-Down Current IPWRDN 2.25 mA
Green Mode Power-Down IPWRDNG Sync bypass function 16 mA
Power-Up Time TPWRUP 20 ms
1
The min/max specifications are guaranteed over this range.
2
Temperature range T
3
All specifications obtained using programming scripts with the following sequence included: Addr 0x0E - data 0x80, Addr 0x54 - data 0x00, Addr 0x0E - data 0x00.
4
All ADC linearity tests performed at input range of full scale – 12.5%, and at zero scale + 12.5%.
1, , 2 3
4, 5
8
9
10
8
12
12
8
8
14
to T
MIN
: −40°C to +85°C (0°C to 70°C temperature range for ADV7401KSTZ-140).
MAX
6
±0.9 LSB
7
±1.5 LSB
6
7
−0.2/+1.5 LSB
−0.9/+3.0 LSB
V
V
C
V
V
C
IH
IL
IH
IL
IN
IN
OH
OL
LEAK
OUT
2 V
0.8 V
HS_IN, VS_IN low trigger mode 0.7 V
HS_IN, VS_IN low trigger mode 0.3 V
Pins listed in Note 11−60 +60 μA
10 pF
I
= 0.4 mA 2.4 V
SOURCE
I
= 3.2 mA 0.4 V
SINK
Pins listed in Note 13 60 μA
20 pF
IAVDD CVBS input sampling at 54 MHz 99 mA
Rev. SpA | Page 4 of 20
Symbol Test Conditions Min Typ Max Unit
ADV7401
www.BDTIC.com/ADI
5
Max INL and DNL specifications obtained with part configured for component video input.
6
Specification for ADV7401BSTZ-110 and ADV7401KSTZ-140 only.
7
Specification for ADV7401KSTZ-140 only.
8
Guaranteed by characterization.
9
To obtain specified VIH level on Pin 38, Register 0x13 (wo) must be programmed with value 0x04. If Register 0x13 is programmed with value 0x00,
then V
on Pin 38 = 1.2 V.
IH
10
To obtain specified VIL level on Pin 38, Register 0x13 (wo) must be programmed with value 0x04. If Register 0x13 is programmed with value 0x00,
Analog current measurements for CVBS made with ADC0 powered up only, For RGB, ADC0, ADC1 and ADC2 powered up only, for SCART FB, all ADCs powered up.
Rev. SpA | Page 5 of 20
ADV7401
www.BDTIC.com/ADI
VIDEO SPECIFICATIONS
@ AVDD= 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.71 V to 1.89 V. Operating temperature range,
unless otherwise noted.
SNR Unweighted
SNR Unweighted Luma flat field 58 60 dB
Analog Front End Crosstalk
LOCK TIME SPECIFICATIONS
Horizontal Lock Range −5 +5 %
Vertical Lock Range 40
FSC Subcarrier Lock Range ±1.3 kHz
Color Lock in Time 60 line
Sync Depth Range
Color Burst Range 5 200 %
Vertical Lock Time 2 field
Horizontal Lock Time 100 line
CHROMA SPECIFICATIONS
Hue Accuracy HUE 1 degree
Color Saturation Accuracy CL_AC 1 %
Color AGC Range 5 400 %
Chroma Amplitude Error 0.5 %
Chroma Phase Error
Chroma Luma Intermodulation
LUMA SPECIFICATIONS
Luma Brightness Accuracy
Luma Contrast Accuracy
1
The min/max specifications are guaranteed over this range.
2
Temperature range T
3
Guaranteed by characterization.
4
Nominal sync depth is 300 mV at 100% sync depth range.
1, , 2 3
4
to T
MIN
: −40°C to +85°C (0°C to 70°C temperature range for ADV7401KSTZ-140).
MAX
Symbol Test Conditions Min Typ Max Unit
Luma ramp 54 56
60 dB
70 Hz
20 200 %
0.4 degree
0.2 %
CVBS, 1 V input 1 %
CVBS, 1 V input 1 %
dB
Rev. SpA | Page 6 of 20
ADV7401
www.BDTIC.com/ADI
TIMING CHARACTERISTICS
@ AVDD = 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.71 V to 1.89 V. Operating temperature range,
unless otherwise noted.
Table 3.
Parameter
SYSTEM CLOCK AND CRYSTAL
Crystal Nominal Frequency 28.63636 MHz
Crystal Frequency Stability ±50 ppm
Horizontal Sync Input Frequency 14.8 110 kHz
LLC1 Frequency Range
I2C PORT
SCLK Frequency 400 kHz
SCLK Min Pulse Width High t
SCLK Min Pulse Width Low t
Hold Time (Start Condition) t
Setup Time (Start Condition) t
SDA Setup Time t
SCLK and SDA Rise Time t
SCLK and SDA Fall Time t
Setup Time for Stop Condition t
RESET FEATURE
Reset Pulse Width 5 ms
CLOCK OUTPUTS
LLC1 Mark Space Ratio t9:t
DATA and CONTROL OUTPUTS
Data Output Transition Time SDR (SDP)
Data Output Transition Time SDR (SDP)
Data Output Transition Time SDR (CP)
Data Output Transition Time SDR (CP)
Data Output Transition Time DDR (CP)
Data Output Transition Time DDR (CP)
Data Output Transition Time DDR (CP)
Data Output Transition Time DDR (CP)
DATA and CONTROL INPUTS
Input Setup Time (Digital Input Port) t
DE_IN, data inputs 2.2 ns
Input Hold Time (Digital Input Port) t
DE_IN, data inputs 2 ns
1
The min/max specifications are guaranteed over this range.
2
Temperature range T
3
Guaranteed by characterization.
4
Maximum LLC1 frequency is 80 MHz for ADV7401BSTZ-80 and is 110 MHz for ADV7401BSTZ-110.
5
TTL input values are 0 V to 3 V, with rise/fall times ≤3 ns, measured between the 10% and 90% points.
6
SDP timing figures obtained using default drive strength value (0xD5) in Register Subaddress 0xF4.
7
CP timing figures obtained using max drive strength value (0xFF) in register subaddress 0xF4.
8
DDR timing specifications dependent on LLC1 output pixel clock; TLCC1/4 = 9.25 ns at LLC1 = 27 MHz.
1, , 2 3
4
5
5
to T
MIN
: −40°C to +85°C (0°C to 70°C temperature range for ADV7401KSTZ-140).
MAX
Symbol Test Conditions Min Typ Max Unit
12.825 140 MHz
1
2
3
4
5
6
7
8
6
t
11
6
t
12
7
t
13
7
t
14
7, 8
t
15
7, 8
t
16
7, 8
t
17
7, 8
t
18
19
20
0.6 μs
1.3 μs
0.6 μs
0.6 μs
100 ns
300 ns
300 ns
0.6 μs
45:55 55:45 % duty cycle
10
Negative clock edge
3.6 ns
to start of valid data
End of valid data to
2.4 ns
negative clock edge
End of valid data to
2.8 ns
negative clock edge
Negative clock edge
0.1 ns
to start of valid data
Positive clock edge to
−4 + TLLC1/4 ns
end of valid data
Positive clock edge to
0.25 + TLLC1/4 ns
start of valid data
Negative clock edge
−2.95 + TLLC1/4 ns
to end of valid data
Negative clock edge
−0.5 + TLLC1/4 ns
to start of valid data
HS_IN, VS_IN 9 ns
HS_IN, VS_IN 7 ns
Rev. SpA | Page 7 of 20
ADV7401
www.BDTIC.com/ADI
ANALOG SPECIFICATIONS
@ AVDD = 3.1.5 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.71 V to 1.89 V. Operating temperature
range, unless otherwise noted. Recommended analog input video signal range: 0.5 V to 1.6 V, typically 1 V p-p.
Table 4.
Parameter
CLAMP CIRCUITRY
External Clamp Capacitor 0.1 μF
Input Impedance
Input Impedance of Pin 51 (FB) 20 kΩ
CML 1.86 V
ADC Full-Scale Level CML + 0.8 V V
ADC Zero-Scale level CML − 0.8 V V
ADC Dynamic Range 1.6 V
Clamp Level (When Locked) CVBS input CML – 0.292 V V
SCART RGB input (R, G, B signals) CML – 0.4 V V
S-Video input (Y signal) CML – 0.292 V V
S-Video input (C signal) CML – 0 V V
Component input (Y, Pr, Pb signals) CML – 0.3 V V
PC RGB input (R, G, B signals) CML – 0.3 V V
Large Clamp Source Current SDP only 0.75 mA
Large Clamp Sink Current SDP only 0.9 mA
Fine Clamp Source Current SDP only 17 μA
Fine Clamp Sink Current SDP only 17 μA
1
The min/max specifications are guaranteed over this range.
2
Temperature range T
3
Guaranteed by characterization.
4
Except Pin 51 (FB).
1, , 2 3
4
to T
MIN
: −40°C to +85°C (0°C to 70°C temperature range for ADV7401KSTZ-140).
MAX
Test Conditions Min Typ Max Unit
Clamps switched off 10 MΩ
Rev. SpA | Page 8 of 20
ADV7401
www.BDTIC.com/ADI
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter Rating
AVDD to AGND 4 V
DVDD to DGND 2.2 V
PVDD to AGND 2.2 V
DVDDIO to DGND 4 V
DVDDIO to AVDD −0.3 V to +0.3 V
PVDD to DVDD −0.3 V to +0.3 V
DVDDIO to PVDD −0.3 V to +2 V
DVDDIO to DVDD −0.3 V to +2 V
AVDD to PVDD −0.3 V to +2 V
AVDD to DVDD −0.3 V to +2 V
Digital Inputs Voltage to
DGND
Digital Outputs Voltage to
DGND
Analog Inputs to AGND AGND − 0.3 V to AVDD + 0.3 V
Maximum Junction
Temperature (T
Storage Temperature Range −65°C to +150°C
Infrared Reflow Soldering
(20 sec)
J MAX
)
DGND − 0.3 V to DVDDIO + 0.3 V
DGND − 0.3 V to DVDDIO + 0.3 V
125°C
260°C
STRESS RATINGS
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
PACKAGE THERMAL PERFORMANCE
To reduce power consumption when using the part the user is
advised to turn off any unused ADCs .
The junction temperature must always stay below the
mum junction temperature (T
maxi
equation shows how to calculate the junction temperature:
T
= T
J
+ (θJA × W
A Max
Max
)
where:
T
= 85°C.
A Max
θ
= 30°C/W.
JA
= ((AVDD × IAVDD) + (DVDD × IDVDD) +
W
Max
(DVDDIO × IDVDDIO) + (PVDD × IPVDD)).
) of 125°C. This
J MAX
THERMAL SPECIFICATIONS
Table 6.
Thermal Characteristics Symbol Test Conditions Typ Unit
4-layer PCB with solid ground plane 7 °C/W
4-layer PCB with solid ground plane (still air) 30 °C/W
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. SpA | Page 9 of 20
ADV7401
www.BDTIC.com/ADI
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
IN
_
3
3
P
100
E
D
/
D
L
E
S
I
F
V
99
98
6
6
5
4
1
3
3
3
P
P
P
P
95
97
96
94
D
D
9
7
8
V
1
1
1
D
P
P
P
93
92
91
90
D
N
7
G
3
P
D
898887
S
C
/
N
N
I
I
_
_
8
S
S
3
V
H
P
86
85
1
K
L
0
9
C
4
3
S
P
P
84
82
83
T
N
1
E
B
I
_
A
S
E
L
D
D
A
S
81
80
79
Y
S
E
O
S
R
787776
6
N
I
A
1
P32
P31
INT
CS/HS
DGND
DVDDIO
P15
P14
P13
P12
DGND
DVDD
P29
P28
SFL/SYNC_OUT
SCLK2
DGND
DVDDIO
SDA2
P11
P10
P27
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
P9
23
P8
24
25
P7
PIN 1
26
P6
ADV7401
LQFP
TOP VIEW
(Not to Scale)
27
P5
31
29
30
28
P4
P26
P25
32
P2333P2234P21
P24
37
38
36
LLC1
39
XTAL
DVDD
XTAL1
35
DCLK_IN
40
DGND
42
41
P3
P2
43
P144P0
45
P20
46
ELPF
47
PVDD
Figure 2. Pin Configuration
Table 7. Pin Function Descriptions
Pin No. Mnemonic Type Function
5, 11, 17, 40, 89 DGND G Digital Ground.
49, 50, 60, 66 AGND G Analog Ground.
6, 18 DVDDIO P Digital I/O Supply Voltage (3.3 V).
12, 39, 90 DVDD P Digital Core Supply Voltage (1.8 V).
63 AVDD P Analog Supply Voltage (3.3 V).
47, 48 PVDD P PLL Supply Voltage (1.8 V).
51 FB I
54, 56, 58, 72, 74, 76, 53, 55,
AIN1 to AIN12 I Analog Video Input Channels.
Fast Switch Overlay Input. This pin switches between CVBS and RGB
analog signal
Interrupt. This pin can be active low or ac
bits change this pin triggers. The set of events that triggers an interrupt
is under user control.
75
AIN12
74
AIN5
73
AIN11
72
AIN4
71
AIN10
70
TEST0
69
CAPC2
68
CAPC1
67
BIAS
66
AGND
65
CML
64
REFOUT
63
AVDD
62
CAPY2
61
CAPY1
60
AGND
59
TEST1
58
AIN3
57
AIN9
56
AIN2
55
AIN8
54
AIN1
53
AIN7
52
SOG
51
FB
48
49
PVDD
AGND50AGND
05340-002
tive high. When SDP/CP status
Rev. SpA | Page 10 of 20
ADV7401
www.BDTIC.com/ADI
Pin No. Mnemonic Type Function
4 HS/CS O
99 VS O Vertical Synchronization Output Signal (SDP and CP modes).
98 FIELD/DE O
81, 19 SDA1, SDA2 I/O
82, 16 SCLK1, SCLK2 I
80 ALSB I
78
36 LLC1 O
38 XTAL I
37 XTAL1 O
46 ELPF O The recommend external loop filter must be connected to this ELPF pin.
70 TEST0 NC This pin should be left unconnected or alternatively tied to AGND.
59 TEST1 O This pin should be left unconnected.
15 SFL/SYNC_OUT O
64 REFOUT O Internal Voltage Reference Output.
65 CML O Common-Mode Level Pin (CML) for the internal ADCs.
61, 62 CAPY1, CAPY2 I ADC Capacitor Network.
68, 69 CAPC1, CAPC2 I ADC Capacitor Network.
67 BIAS O
86 HS_IN/CS_IN I
85 VS_IN I VS Input Signal. Used in CP mode for 5-wire timing mode.
79 DE_IN I
35 DCLK_IN I
52 SOG I Sync on Green Input. Used in embedded sync mode.
77 SOY I Sync on Luma Input. Used in embedded sync mode.
RESET
I
HS is a Horizontal Synchronization Output Signal (SDP and CP modes).
CS is a Digital Composite Synchroniz
while in CP mode).
Field Synchronization Output Signal (all
pin also can be enabled as a Data Enable signal (DE) in CP mode to allow
direct connection to a HDMI/DVI Tx IC.
2
C Port Serial Data Input/Output Pins. SDA1 is the data line for the
I
control port and SDA2 is the data line for the VBI readback port.
2
C Port Serial Clock Input (max clock rate of 400 kHz). SCLK1 is the clock
I
line for the control port and SCLK2 is the clock line for the VBI data
readback port.
This pin selects the I
readback ports. ALSB set to Logic 0 sets the address for a write to control
port of 0x40 and the readback address for the VBI port of 0x21. ALSB set
to a logic high sets the address for a write to control port of 0x42 and the
readback address for the VBI port of 0x23.
System Reset Input, Active Low. A minimum low reset pulse width of 5
ms is required to reset the ADV7401 circuitry.
LLC1 is a line-locked output clock for the pixel data (range is 12.825 MHz
to 140 MHz for ADV7401KSTZ-1
ADV7401BSTZ-110; 12.825 MHz to 80 MHz for ADV7401BSTZ-80).
Input pin for 28.63636 MHz crystal, or can be overdriven by an external
3.3 V 28.63636 MHz clock oscillator source to clock the ADV7401.
This pin should be connected to the 28.63636 MHz crystal or left as a no
connect if an external 3.3 V 28.63636 MHz clock oscillator source
to clock the ADV7401. In crystal mode, the crystal must be a
fundamental crystal.
Subcarrier Frequency Lock (SFL). This pin contains a seri
which can be used to lock the subcarrier frequency when this decoder is
connected to any Analog Devices digital video encoder. SYNC_OUT is
the sliced sync output signal available only in CP mode.
External Bias Setting Pin. Connect the recommend
between pin and ground.
Can be configured in CP mode to be either a digital HS input signal or a
digital CS input signal used to e
mode.
Data Enable Input Signal. Used in 24-bit digital input port mode (for
example, processing 24-bit RGB data from a DVI Rx IC).
Clock Input Signal. Used in 24-bit digital input m
processing 24-bit RGB data from a DVI Rx IC) and also in digital CVBS
input mode.
2
C address for the ADV7401 control and VBI
ation Signal (and can be selected
interlaced video modes). This
40; 12.825 MHz to 110 MHz for
is used
al output stream
ed resistor (1.35 kΩ)
xtract timing in a 5-wire or 4-wire RGB
ode (for example,
Rev. SpA | Page 11 of 20
ADV7401
www.BDTIC.com/ADI
TIMING DIAGRAMS
SDA1/SDA2
SCLK1/SCLK2
t
3
t
t
6
1
t
2
t
7
Figure 3. I
t
5
2
C Timing
t
3
t
4
t
8
05340-003
LLC1
P2–P9, P12–P19,
P22–P29
LLC1
P2–P9, P12–P19,
P22–P29, VS, HS,
FIELD/DE,
SFL/SYNC_OUT
t
9
t
t
10
t
11
12
Figure 4. Pixel Port and Control SDR Output Timing (SD Core)
t
9
t
13
t
10
t
14
Figure 5. Pixel Port and Control SDR Output Timing (CP Core)
LLC1
05340-004
05340-005
t
16
t
P6–P9,
P12–P19
15
Figure 6. Pixel Port and Control DDR Output Timing (CP Core)
DCLK_IN
t
20
t
19
CONTROL
INPUTS
P0–P1, P10–P11,
P20–P21, P22–P29,
P31–P32, P33–P40
HS_IN
VS_IN
DE_IN
t9t
10
Figure 7. Digital Input Port and Control Input Timing
Rev. SpA | Page 12 of 20
t
18
t
17
05340-006
05340-008
ADV7401
www.BDTIC.com/ADI
DETAILED FUNCTIONALITY
ANALOG FRONT END
•Four high quality 10-bit ADCs enable true 8-bit video
decoder
•12 analog input channel mux enables multisource
nnection without the requirement of an external mux
co
•Four current and voltage clamp control loops ensure any
dc o
ffsets are removed from the video signal
•SCART functionality and SD RGB overlay on CVBS
ntrolled by fast blank input
co
•Four internal antialias filters to remove out-of-band noise
o
n standard definition input video signals
SDP PIXEL DATA OUTPUT MODES
•8-bit ITU-R BT.656 4:2:2 YCrCb with embedded time
codes and/or HS, VS, and FIELD
•16-bit YCrCb with embedded time codes and/or HS, VS,
a
nd FIELD
•Proprietary architecture for locking to weak, noisy, and
un
stable sources from VCRs and tuners
•IF filter block compensates for high frequency luma
ttenuation due to tuner SAW filter
a
• Chroma transient improvement (CTI)
• Luminance digital noise reduction (DNR)
• Color controls include hue, brightness, saturation, contrast,
a
nd Cr and Cb offset controls
•Certified Macrovision copy protection detection on
mposite and S-video for all worldwide formats
co
(PAL/NTSC/SECAM)
•4× oversampling (54 MHz) for CVBS, S-video, and YUV
des
mo
• Line-locked clock output (LLC)
• Letterbox detection supported
• 24-bit YCrCb with embedded time codes and/or HS, VS,
nd FIELD
a
CP PIXEL DATA OUTPUT MODES
• Single data rate (SDR) 8-bit 4:2:2 YCrCb for 525i, 625i
• Single data rate (SDR) 16-bit 4:2:2 YCrCb for all standards
• Single data rate (SDR) 24-bit 4:4:4 YCrCb/RGB for all
st
andards
• Double data rate (DDR) 8-bit 4:2:2 YCrCb for all standards
• Double data rate (DDR) 12-bit 4:4:4 YCrCb/RGB for all
andards
st
COMPOSITE AND S-VIDEO PROCESSING
•Support for NTSC (J, M, 4.43), PAL (B, D, I, G, H, M, N,
60) and SECAM B/D/G/K/L standards in the form of
CVBS and S-video
•Superadaptive 2D 5-line comb filters for NTSC and PAL
ive superior chrominance and luminance separation for
g
composite video
•Full automatic detection and autoswitching of all
w
orldwide standards (PAL/NTSC/SECAM)
•Free-run output mode provides stable timing when no
eo input is present
vid
•Vertical blanking interval data processor
l eTe x t
Te
Video Programming System (VPS)
Vertical Interval Time Codes (VITC)
Closed captioning (CC) and extended data service (EDS)
Wide screen signaling (WSS)
Copy generation management system (CGMS)
Gemstar™ 1×/2× electronic program guide compatible
• Clo
• Subcarrier frequency lock (SFL) output for downstream
• Differential gain typically 0.5%
• Differential phase typically 0.5°
cked from a single 28.63636 MHz crystal
vide
o encoder
•Automatic gain control with white peak mode ensures the
v
ideo is always processed without loss of the video
processing range
•Adaptive digital line length tracking (ADLLT™)
Rev. SpA | Page 13 of 20
ADV7401
www.BDTIC.com/ADI
COMPONENT VIDEO PROCESSING
•Formats supported include 525i, 625i, 525p, 625p, 720p,
1080i, and many other HDTV formats
•Automatic adjustments include gain (contrast) and offset
brightness); manual adjustment controls are also
(
supported
•Support for analog component YPrPb/RGB video formats
th embedded sync or with separate HS, VS, or CS
wi
•Any-to-any, 3 × 3 color space conversion matrix supports
CrCb-to-RGB and RGB-to-YCrCb
Y
DIGITAL VIDEO INPUT PORT
• Supports raw 8-bit CVBS data from digital tuner
• Support for 24-bit RGB input data from DVI Rx chip,
o
utput converted to YCrCb 4:2:2
•Support for 24-bit 4:4:4, 16-bit 4:2:2 525i, 625i, 525p, 625p,
1080i
, 720p, VGA to SXGA @ 60 Hz input data from
HDMI Rx chip, output converted to 16-bit 4:2:2 YCrCb
GENERAL FEATURES
•HS, VS, and FIELD output signals with programmable
position, polarity, and width
•Standard identification (STDI) enables system level
• Automatic detection of sync source and polarity by SSPD
ock
bl
• Standard identification is enabled by STDI block
• RGB can be color space converted to YCrCb and
decimated to a 4:2:2 format for video centric backend IC
interfacing
•Data enable (DE) output signal supplied for direct
nnection to HDMI/DVI Tx IC
co
•Arbitrary pixel sampling support for nonstandard video
urces
so
Rev. SpA | Page 14 of 20
ADV7401
www.BDTIC.com/ADI
DETAILED DESCRIPTION
ANALOG FRONT END
The ADV7401 analog front end comprises four 10-bit ADCs
that digitize the analog video signal before applying it to the
SDP or CP (see Ta b le 8 for sampling rates). The analog front
end uses dif
performance in a mixed-signal application.
The front end also includes a 12-channel input mux that enables
mu
ltiple video signals to be applied to the ADV7401. Current
and voltage clamps are positioned in front of each ADC to
ensure that the video signal remains within the range of the
converter. Fine clamping of the video signals is performed
downstream by digital fine clamping in either the CP or SDP.
Optional antialiasing filters are positioned in front of each
ADC. T
definition video signals, removing spurious, out-of-band noise.
The ADCs are configured to run in 4× oversampling mode
en decoding composite and S-video inputs; 2× oversampling
wh
is performed for component 525i, 625i, 525p, and 625p sources.
All other video standards are 1× oversampled. Oversampling
the video signals reduces the cost and complexity of external
anti-aliasing filters with the benefit of an increased signal-tonoise ratio (SNR).
The ADV7401 can support simultaneous processing of CVBS
and RGB st
ibility and overlay functionality. A combination of CVBS and
RGB inputs can be mixed and output under control of I
registers and the fast blank pin.
The SDP section is capable of decoding a large selection of
baseband video signals in composite S-video and YUV formats.
The video standards supported by the SDP include PAL
B/D/I/G/H, PAL60, PAL M, PAL N, NTSC M/J, NTSC 4.43, and
SECAM B/D/G/K/L. The ADV7401 can automatically detect
the video standard and process it accordingly.
The SDP has an IF filter block that compensates for attenuation
in the high frequency luma spectrum due to tuner SAW filter.
The SDP has specific luminance and chrominance parameter
trol for brightness, contrast, saturation, and hue.
con
The ADV7401 implements a patented adaptive-digital-linelen
gth-tracking (ADLLT) algorithm to track varying video
line lengths from sources such as a VCR. ADLLT enables the
ADV7401 to track and decode poor quality video sources
such as VCRs, noisy sources from tuner outputs, VCD players,
and camcorders. The SDP also contains a chroma transient
improvement (CTI) processor. This processor increases the
edge rate on chroma transitions, resulting in a sharper
video image.
The SDP can process a variety of VBI data services, such as
Te
video programming system (VPS), vertical interval time codes
(VITC), copy generation management system (CGMS),
Gemstar 1×/2×, and extended data service (XDS). The
ADV7401 SDP section has a Macrovision 7.1 detection circuit
that allows it to detect Types I, II, and III protection levels. The
decoder is also fully robust to all Macrovision signal inputs.
COMPONENT PROCESSOR
The CP section is capable of decoding/digitizing a wide range of
component video formats in any color space. Component video
standards supported by the CP are 525i, 625i, 525p, 625p, 720p,
1080i, 1250i, VGA up to SXGA @ 75 Hz (ADV7401KSTZ-140
only), and many other standards not listed here.
The CP section of the ADV7401 contains an AGC block.
en no embedded sync is present, the video gain can be set
Wh
manually. The AGC section is followed by a digital clamp
circuit that ensures the video signal is clamped to the correct
blanking level. Automatic adjustments within the CP include
gain (contrast) and offset (brightness); manual adjustment
controls are also supported.
A fully programmable, any-to-any, 3 × 3 color space conversion
rix is placed between the analog front end and the CP
mat
section. This enables YPrPb-to-RGB and RGB-to-YCrCb
conversions. Many other standards of color space can be
implemented using the color space converter.
The SDP has a 5-line superadaptive 2D comb filter that gives
sup
erior chrominance and luminance separation when decoding a composite video signal. This highly adaptive filter automatically adjusts its processing mode according to video
standard and signal quality with no user intervention required.
Rev. SpA | Page 15 of 20
ADV7401
www.BDTIC.com/ADI
The output section of the CP is highly flexible. It can be configured in single data rate mode (SDR) with one data packet per
clock cycle or in a double data rate (DDR) mode where data is
presented on the rising and falling edges of the clock. In SDR
mode, a 16-bit 4:2:2 or 24-bit 4:4:4 output is possible. In these
modes HS, VS, and FIELD/DE (where applicable) timing reference signals are provided. In DDR mode, the ADV7401 can be
configured in an 8-bit 4:2:2 YCrCb or 12-bit 4:4:4 RGB/ YCrCb
pixel output interface with corresponding timing signals.
The ADV7401 is capable of supporting an external DVI/
HDMI r
16-bit 4:2:2 bit data (either graphics RGB or component video
YCrCb), accompanied by HS, VS, DE, and a fully synchronous
clock signal. The data is processed in the CP and output as
16-bit 4:2:2 YCrCb data.
eceiver. The digital interface expects 24-bit 4:4:4 or
The CP section contains circuitry to enable the detection of
Ma
crovision encoded YPrPb signals for 525i, 625i, 525p, and
625p. It is designed to be fully robust when decoding these
types of signals.
VBI extraction of CGMS data is performed by the CP section
of
the ADV7401 for interlaced, progressive, and high definition
scanning rates. The data extracted can be read back over the
2
I
C interface. For more detailed product information about the
ADV7401, contact your local ADI sales office or email
The ADV7401 is a Pb-free, environmentally friendly product. It is manufactured using the most up-to-date materials and processes. The coating on the leads of each
device is 100% pure Sn electroplate. The device is suitable for Pb-free applications, and is able to withstand surface-mount soldering at up to 255°C (±5°C). In addition,
it is backward compatible with conventional SnPb soldering processes. This means that the electroplated Sn coating can be soldered with SnPb solder pastes at
conventional reflow temperatures of 220°C to 235°C.
Purchase of licensed I2C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I2C Patent
Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.