AD AD9381 Hdmi display interface Datasheet

HDMI™ Display Interface
AD9381
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Advanced TVs
HDTVs
Projectors
LCD monitors
SDA
SERIAL REGISTER
AND
POWER MANAGEMENT
YCbCr (4:2:2
OR 4:4:4)
R/G/B 8 × 3
OR YCbCr
Rx0+
Rx0–
2
DATACK
Rx1+
HSYNC
Rx1–
Rx2+
VSYNC
2
DATACK
HSOUT
VSOUT
HDMI RECEIVER
DE
Rx2–
DE
RxC+
S/PDIF
RxC–
8-CHANNEL
I2S
RTERM
MCLK
LRCLK
DDCSDA
DDCSCL
HDCP
HDCP KEYS
AD9381
05689-001
APPLICATIONS
R/G/B 8 × 3
SCL
RGB ↔YCbCr
COLORSPACE CONVERTER
Internal HDCP keys
HDMI interface
Supports high bandwidth digital content protection
RGB to YCbCr 2-way color conversion
1.8 V/3.3 V power supply
100-lead Pb-free LQFP
RGB and YCbCr output formats
Digital video interface
HDMI 1.1, DVI 1.0
150 MHz HDMI receiver
Supports high bandwidth digital content protection
(HDCP 1.1)
Digital audio interface
HDMI 1.1-compatible audio interface
S/PDIF (IEC90658-compatible) digital audio output
Multichannel I2S audio output (up to 8 channels)
Figure 1.
GENERAL DESCRIPTION
The AD9381 offers a high definition multimedia interface
(HDMI) receiver integrated on a single chip. Also included is
support for high bandwidth digital content protection (HDCP)
via an internal key storage.
Fabricated in an advanced CMOS process, the AD9381 is
provided in a space-saving, 100-lead, surface-mount, Pb-free
plastic LQFP and is specified over the 0°C to 70°C temperature
range.
The AD9381 contains an HDMI 1.0-compatible receiver and
supports all HDTV formats (up to 1080p) and display
resolutions up to SXGA (1280×1024 @ 75 Hz). The receiver
features an intrapair skew tolerance of up to one full clock cycle.
With the inclusion of HDCP, displays may now receive
encrypted video content. The AD9381 allows for authentication
of a video receiver, decryption of encoded data at the receiver,
and renewability of that authentication during transmission as
specified by the HDCP 1.1 protocol.
Rev. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
AD9381
TABLE OF CONTENTS
Features .............................................................................................. 1
4:4:4 to 4:2:2 Filter ...................................................................... 11
Applications....................................................................................... 1
Audio PLL Setup......................................................................... 12
Functional Block Diagram .............................................................. 1
Audio Board Level Muting........................................................ 13
General Description ......................................................................... 1
Output Data Formats................................................................. 13
Specifications..................................................................................... 3
2-Wire Serial Register Map ........................................................... 14
Electrical Characteristics............................................................. 3
2-Wire Serial Control Register DetailS........................................ 26
Digital Interface Electrical Characteristics ............................... 3
Chip Identification ..................................................................... 26
Absolute Maximum Ratings............................................................ 5
BT656 Generation ...................................................................... 28
Explanation of Test Levels ........................................................... 5
Macrovision................................................................................. 29
ESD Caution.................................................................................. 5
Color Space Conversion ............................................................ 30
Pin Configuration and Function Descriptions............................. 6
2-Wire Serial Control Port ............................................................ 37
Design Guide..................................................................................... 9
Data Transfer via Serial Interface............................................. 37
General Description..................................................................... 9
Serial Interface Read/Write Examples ..................................... 38
Digital Inputs ................................................................................ 9
PCB Layout Recommendations.................................................... 39
Serial Control Port ....................................................................... 9
Power Supply Bypassing ............................................................ 39
Output Signal Handling............................................................... 9
Outputs (Both Data and Clocks).............................................. 39
Timing.............................................................................................. 10
Digital Inputs .............................................................................. 39
VSYNC Filter and Odd/Even Fields ........................................ 10
Color Space Converter (CSC) Common Settings...................... 40
HDMI Receiver........................................................................... 10
Outline Dimensions ....................................................................... 42
DE Generator .............................................................................. 10
Ordering Guide .......................................................................... 42
REVISION HISTORY
10/05—Revision 0: Initial Version
Rev. 0 | Page 2 of 44
AD9381
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VDD, VD = 3.3 V, DVDD = PVDD = 1.8 V, ADC clock = maximum.
Table 1.
Parameter
DIGITAL INPUTS (5 V Tolerant)
Input Voltage, High (VIH)
Input Voltage, Low (VIL)
Input Current, High (IIH)
Input Current, Low (IIL)
Input Capacitance
DIGITAL OUTPUTS
Output Voltage, High (VOH)
Output Voltage, Low (VOL)
Duty Cycle, DATACK
Output Coding
THERMAL CHARACTERISTICS
θJA-Junction-to-Ambient
AD9381KSTZ-100
Typ
Max
Temp
Test Level
Min
Full
Full
Full
Full
25°C
VI
VI
V
V
V
2.6
Full
Full
Full
VI
VI
V
VDD − 0.1
Min
AD9381KSTZ-150
Typ
Max
2.6
0.8
0.8
−82
82
3
45
V
−82
82
3
VDD − 0.1
50
Binary
0.4
55
45
50
Binary
35
0.4
55
35
Unit
V
V
μA
μA
pF
V
V
%
°C/W
DIGITAL INTERFACE ELECTRICAL CHARACTERISTICS
VDD = VD = 3.3 V, DVDD = PVDD = 1.8 V, ADC clock = maximum.
Table 2.
Parameter
RESOLUTION
DC DIGITAL I/O Specifications
High-Level Input Voltage, (VIH)
Low-Level Input Voltage, (VIL)
High-Level Output Voltage, (VOH)
Low-Level Output Voltage, (VOL)
DC SPECIFICATIONS
Output High Level
IOHD, (VOUT = VOH)
Output Low Level
IOLD, (VOUT = VOL)
DATACK High Level
VOHC, (VOUT = VOH)
DATACK Low Level
VOLC, (VOUT = VOL)
Differential Input Voltage, SingleEnded Amplitude
POWER SUPPLY
VD Supply Voltage
VDD Supply Voltage
DVDD Supply Voltage
PVDD Supply Voltage
IVD Supply Current (Typical Pattern)1
IVDD Supply Current (Typical
Pattern)2
Test Level
Conditions
VI
VI
VI
VI
IV
IV
IV
IV
IV
IV
IV
IV
IV
Min
2.5
2.5
VDD − 0.1
VDD − 0.1
Output drive = high
Output drive = low
Output drive = high
Output drive = low
Output drive = high
Output drive = low
Output drive = high
Output drive = low
3.15
1.7
1.7
1.7
Rev. 0 | Page 3 of 44
3.3
3.3
1.8
1.8
80
40
Typ
8
Max
Unit
Bit
0.8
0.8
0.1
0.1
V
V
V
V
700
mA
mA
mA
mA
mA
mA
mA
mA
mV
3.47
347
1.9
1.9
110
1753
V
V
V
V
mA
mA
36
24
12
8
40
20
30
15
75
IV
IV
IV
IV
V
V
AD9381KSTZ-150
AD9381KSTZ-100
Min
Typ
Max
8
36
24
12
8
40
20
30
15
700
75
3.47
347
1.9
1.9
100
1003
3.15
1.7
1.7
1.7
3.3
3.3
1.8
1.8
80
55
AD9381
Parameter
IDVDD Supply Current (Typical
Pattern)1, 4
IPVDD Supply Current (Typical
Pattern)1
Power-Down Supply Current (IPD)
AC SPECIFICATIONS
Intrapair (+ to −) Differential Input
Skew (TDPS)
Channel to Channel Differential
Input Skew (TCCS)
Low-to-High Transition Time for
Data and Controls (DLHT)
Test Level
V
26
VI
130
Max
145
Unit
mA
30
40
mA
130
mA
ps
IV
6
900
Clock
Period
ps
1300
ps
650
ps
1200
ps
850
ps
1250
ps
800
ps
1200
ps
+2.0
55
150
ns
%
MHz
IV
IV
IV
IV
IV
Clock to Data Skew 5 (TSKEW)
Duty Cycle, DATACK5
DATACK Frequency (FCIP)
35
Typ
110
360
IV
High-to-Low Transition Time for
DATACK (DHLT)
AD9381KSTZ-150
Min
IV
IV
High-to-Low Transition Time for
Data and Controls (DHLT)
AD9381KSTZ-100
Min
Typ
Max
88
110
V
IV
Low-to-High Transition Time for
DATACK (DLHT)
Conditions
Output drive = high;
CL = 10 pF
Output drive = low;
CL = 5 pF
Output drive = high;
CL = 10 pF
Output drive = low;
CL = 5 pF
Output drive = high;
CL = 10 pF
Output drive = low;
CL = 5 pF
Output drive = high;
CL = 10 pF
Output drive = low;
CL = 5 pF
IV
IV
VI
–0.5
45
20
1
+2.0
50
The typical pattern contains a gray scale area, output drive = high. Worst-case pattern is alternating black and white pixels.
The typical pattern contains a gray scale area, output drive = high.
3
Specified current and power values with a worst-case pattern (on/off).
4
DATACK load = 10 pF, data load = 5 pF.
5
Drive strength = high.
2
Rev. 0 | Page 4 of 44
–0.5
AD9381
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
VD
VDD
DVDD
PVDD
Analog Inputs
Digital Inputs
Digital Output Current
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Maximum Case Temperature
Rating
3.6 V
3.6 V
1.98 V
1.98 V
VD to 0.0 V
5 V to 0.0 V
20 mA
−25°C to +85°C
−65°C to +150°C
150°C
150°C
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.
EXPLANATION OF TEST LEVELS
Table 4.
Level
I
II
III
IV
V
VI
Test
100% production tested.
100% production tested at 25°C and sample tested at
specified temperatures.
Sample tested only.
Parameter is guaranteed by design and
characterization testing.
Parameter is a typical value only.
100% production tested at 25°C; guaranteed by design
and characterization testing.
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. 0 | Page 5 of 44
AD9381
VDD
RED 0
RED 1
RED 2
RED 3
RED 4
RED 5
RED 6
RED 7
GND
VDD
DATACK
DE
HSOUT
SOGOUT
VSOUT
O/E FIELD
SDA
SCL
PWRDN
VD
NC
GND
NC
VD
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
GND
74
NC
3
73
NC
GREEN 5
4
72
VD
GREEN 4
5
71
NC
GREEN 3
6
70
NC
GREEN 2
7
69
GND
GREEN 1
8
68
NC
GREEN 0
9
67
VD
VDD
10
AD9381
66
NC
GND
11
65
GND
BLUE 7
12
TOP VIEW
(Not to Scale)
64
GND
BLUE 6
13
63
GND
BLUE 5
14
62
GND
BLUE 4
15
61
GND
BLUE 3
16
60
GND
BLUE 2
17
59
PVDD
BLUE 1
18
58
GND
BLUE 0
19
57
FILT
MCLKIN
20
56
PVDD
MCLKOUT
21
55
GND
SCLK
22
54
PVDD
LRCLK
23
53
GND
I2S3
24
52
PU1
I2S2
25
51
PU2
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
GND
Rx1–
Rx1+
GND
Rx2–
Rx2+
GND
RxC+
RxC–
VD
RTERM
GND
DVDD
DDCSCL
DDCSDA
32
DVDD
Rx0+
31
GND
34
30
DVDD
Rx0–
29
GND
33
28
S/PDIF
VD
27
NC = NO CONNECT
26
GREEN 6
PIN 1
I2S0
2
I2S1
1
05689-002
75
GND
GREEN 7
Figure 2. Pin Configuration
Table 5. Complete Pinout List
Pin Type
INPUTS
DIGITAL VIDEO DATA INPUTS
DIGITAL VIDEO CLOCK INPUTS
OUTPUTS
Pin No.
81
35
34
38
37
41
40
43
44
92 to 99
2 to 9
12 to 19
89
87
85
86
84
Mnemonic
PWRDN
Rx0+
Rx0−
Rx1+
Rx1−
Rx2+
Rx2−
RxC+
RxC−
RED [7:0]
GREEN [7:0]
BLUE [7:0]
DATACK
HSOUT
VSOUT
SOGOUT
O/E FIELD
Function
Power-Down Control
Digital Input Channel 0 True
Digital Input Channel 0 Complement
Digital Input Channel 1 True
Digital Input Channel 1 Complement
Digital Input Channel 2 True
Digital Input Channel 2 Complement
Digital Data Clock True
Digital Data Clock Complement
Outputs of Red Converter, Bit 7 is MSB
Outputs of Green Converter, Bit 7 is MSB
Outputs of Blue Converter, Bit 7 is MSB
Data Output Clock
HSYNC Output Clock (Phase-Aligned with DATACK)
VSYNC Output Clock (Phase-Aligned with DATACK)
SOG Slicer Output
Odd/Even Field Output
Rev. 0 | Page 6 of 44
Value
3.3 V CMOS
TMDS
TMDS
TMDS
TMDS
TMDS
TMDS
TMDS
TMDS
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
AD9381
Pin Type
REFERENCES
POWER SUPPLY
CONTROL
HDCP
AUDIO DATA OUTPUTS
DATA ENABLE
RTERM
Pin No.
57
80, 76, 72, 67,
45, 33
100, 90, 10
59, 56, 54
48, 32, 30
83
82
49
50
51
52
28
27
26
25
24
20
21
22
23
88
46
Mnemonic
FILT
VD
Function
Connection for External Filter Components for Audio PLL
Analog Power Supply and DVI Terminators
Value
PVDD
3.3 V
VDD
PVDD
DVDD
GND
SDA
SCL
DDCSCL
DDCSDA
PU2
PU1
S/PDIF
I2S0
I2S1
I2S2
I2S3
MCLKIN
MCLKOUT
SCLK
LRCLK
DE
RTERM
Output Power Supply
PLL Power Supply
Digital Logic Power Supply
Ground
Serial Port Data I/O
Serial Port Data Clock
HDCP Slave Serial Port Data Clock
HDCP Slave Serial Port Data I/O
This should be pulled up to 3.3 V through a 10 kΩ resistor
This should be pulled up to 3.3 V through a 10 kΩ resistor
S/PDIF Digital Audio Output
I2S Audio (Channel 1, Channel 2)
I2S Audio (Channels 3, Channel 4)
I2S Audio (Channels 5, Channel 6)
I2S Audio (Channels 7, Channel 8)
External Reference Audio Clock In
Audio Master Clock Output
Audio Serial Clock Output
Data Output Clock for Left and Right Audio Channels
Data Enable
Sets Internal Termination Resistance
1.8 V to 3.3 V
1.8 V
1.8 V
0V
3.3 V CMOS
3.3 V CMOS
3.3 V CMOS
3.3 V CMOS
3.3 V CMOS
3.3 V CMOS
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
3.3 V CMOS
500 Ω
Table 6. Pin Function Descriptions
Mnemonic
INPUTS
Rx0+
Rx0−
Rx1+
Rx1−
Rx2+
Rx2−
RxC+
RxC−
FILT
PWRDN
Description
Digital Input Channel 0 True.
Digital Input Channel 0 Complement.
Digital Input Channel 1 True.
Digital Input Channel 1 Complement.
Digital Input Channel 2 True.
Digital Input Channel 2 Complement.
These six pins receive three pairs of transition minimized differential signaling (TMDS) pixel data (at 10× the pixel
rate) from a digital graphics transmitter.
Digital Data Clock True.
Digital Data Clock Complement.
This clock pair receives a TMDS clock at 1× pixel data rate.
External Filter Connection.
For proper operation, the audio clock generator PLL requires an external filter. Connect the filter shown in
Figure 8 to this pin. For optimal performance, minimize noise and parasitics on this node. For more information
see the PCB Layout Recommendations section .
Power-Down Control/Three-State Control.
The function of this pin is programmable via Register 0x26 [2:1].
Rev. 0 | Page 7 of 44
AD9381
Mnemonic
OUTPUTS
HSOUT
VSOUT
O/E FIELD
SERIAL PORT
SDA
SCL
DDCSDA
DDCSCL
PU2
PU1
DATA OUTPUTS
Red [7:0]
Green [7:0]
Blue [7:0]
DATA CLOCK OUTPUT
DATACK
POWER SUPPLY 1
VD (3.3 V)
VDD (1.8 V to 3.3 V)
PVDD (1.8 V)
DVDD (1.8 V)
GND
1
Description
Horizontal Sync Output.
A reconstructed and phase-aligned version of the HSYNC input. Both the polarity and duration of this output can
be programmed via serial bus registers. By maintaining alignment with DATACK and Data, data timing with
respect to horizontal sync can always be determined.
Vertical Sync Output.
The separated VSYNC from a composite signal or a direct pass through of the VSYNC signal. The polarity of this
output can be controlled via the serial bus bit (Register 0x24[6]).
Odd/Even Field Bit for Interlaced Video. This output identifies whether the current field (in an interlaced signal) is
odd or even. The polarity of this signal is programmable via Register 0x24[4].
Serial Port Data I/O for Programming AD9381 Registers—I2C Address is 0x98.
Serial Port Data Clock for Programming AD9381 Registers.
Serial Port Data I/O for HDCP Communications to Transmitter—I2C Address is 0x74 or 0x76.
Serial Port Data Clock for HDCP Communications to Transmitter.
This should be pulled up to 3.3 V through a 10 kΩ resistor.
This should be pulled up to 3.3 V through a 10 kΩ resistor.
Data Output, Red Channel.
Data Output, Green Channel.
Data Output, Blue Channel.
The main data outputs. Bit 7 is the MSB. The delay from pixel sampling time to output is fixed, but will be
different if the color space converter is used. When the sampling time is changed by adjusting the phase register,
the output timing is shifted as well. The DATACK and HSOUT outputs are also moved, so the timing relationship
among the signals is maintained.
Data Clock Output.
This is the main clock output signal used to strobe the output data and HSOUT into external logic. Four possible
output clocks can be selected with Register 0x25[7:6]. These are related to the pixel clock (1/2× pixel clock, 1×
pixel clock, 2× frequency pixel clock, and a 90° phase shifted pixel clock). They are produced either by the
internal PLL clock generator or EXTCLK and are synchronous with the pixel sampling clock. The polarity of
DATACK can also be inverted via Register 0x24[0]. The sampling time of the internal pixel clock can be changed
by adjusting the phase register. When this is changed, the pixel-related DATACK timing is shifted as well. The
DATA, DATACK, and HSOUT outputs are all moved, so the timing relationship among the signals is maintained.
Analog Power Supply.
These pins supply power to the ADCs and terminators. They should be as quiet and filtered as possible.
Digital Output Power Supply.
A large number of output pins (up to 27) switching at high speed (up to 150 MHz) generates many power supply
transients (noise). These supply pins are identified separately from the VD pins so special care can be taken to
minimize output noise transferred into the sensitive analog circuitry. If the AD9381 is interfacing with lower
voltage logic, VDD may be connected to a lower supply voltage (as low as 1.8 V) for compatibility.
Clock Generator Power Supply.
The most sensitive portion of the AD9381 is the clock generation circuitry. These pins provide power to the clock
PLL and help the user design for optimal performance. The designer should provide quiet, noise-free power to
these pins.
Digital Input Power Supply.
This supplies power to the digital logic.
Ground.
The ground return for all circuitry on chip. It is recommended that the AD9381 be assembled on a single solid
ground plane, with careful attention to ground current paths.
The supplies should be sequenced such that VD and VDD are never less than 300 mV below DVDD. At no time should DVDD be more than 300 mV greater than VD or VDD.
Rev. 0 | Page 8 of 44
AD9381
DESIGN GUIDE
GENERAL DESCRIPTION
SERIAL CONTROL PORT
The AD9381 is a fully integrated solution for receiving DVI/
HDMI signals and is capable of decoding HDCP-encrypted
signals through connections to an internal EEPROM. The
circuit is ideal for providing an interface for HDTV monitors
or as the front end to high performance video scan converters.
The serial control port is designed for 3.3 V logic. However, it is
tolerant of 5 V logic signals.
Implemented in a high performance CMOS process, the
interface can capture signals with pixel rates of up to 150 MHz.
Power Management
The AD9381 includes all necessary circuitry for decoding
TMDS signaling including those encrypted with HDCP. The
output data formatting includes a color space converter (CSC),
which accommodates any input color space and can output any
color space. All controls are programmable via a 2-wire serial
interface. Full integration of these sensitive mixed signal
functions makes system design straight-forward and less
sensitive to the physical and electrical environment.
DIGITAL INPUTS
The digital control inputs (I2C) on the AD9381 operate to 3.3 V
CMOS levels. In addition, all digital inputs, except the TMDS
(HDMI/DVI) inputs, are 5 V tolerant (applying 5 V to them
does not cause damage). The TMDS input pairs (Rx0+/Rx0−,
Rx1+/Rx1−, Rx2+/Rx2−, and RxC+/RxC−) must maintain a
100 Ω differential impedance (through proper PCB layout)
from the connector to the input where they are internally
terminated (50 Ω to 3.3 V). If additional ESD protection is
desired, use of a California Micro Devices (CMD) CM1213
(among others) series low capacitance ESD protection offers
8 kV of protection to the HDMI TMDS lines.
OUTPUT SIGNAL HANDLING
The digital outputs operate from 1.8 V to 3.3 V (VDD).
The AD9381 uses the activity detect circuits, the active interface
bits in the serial bus, the active interface override bits, the
power-down bit, and the power-down pin to determine the
correct power state. There are four power states: full-power,
seek mode, auto power-down, and power-down.
Table 7 summarizes how the AD9381 determines which power
mode to use and which circuitry is powered on/off in each of
these modes. The power-down command has priority and then
the automatic circuitry. The power-down pin (Pin 81—polarity
set by Register 0x26[3]) can drive the chip into four powerdown options. Bit 2 and Bit1 of Register 0x26 control these four
options. Bit 0 controls whether the chip is powered down or the
outputs are placed in high impedance mode (with the exception
of SOG). Bit 7 to Bit 4 of Register 0x26 control whether the
outputs, SOG, Sony Philips digital interface (S/PDIF ) or InterIC sound bus (I2S or IIS) outputs are in high impedance mode
or not. See the 2-Wire Serial Control Register Detail section for
more details.
Table 7. Power-Down Mode Descriptions
Mode
Full Power
Seek Mode
Seek Mode
Power-Down
Power-Down 1
1
1
1
0
Inputs
Sync Detect 2
1
0
0
X
Auto PD Enable 3
X
0
1
1
Power-down is controlled via Bit 0 in Serial Bus Register 0x26.
Sync detect is determined by OR’ing Bits 7 to Bit 2 in Serial Bus Register 0x15.
3
Auto power-down is controlled via Bit 7 in Serial Bus Register 0x27.
2
Rev. 0 | Page 9 of 44
Power-On or Comments
Everything
Everything
Serial bus, sync activity detect, SOG, band gap reference
Serial bus, sync activity detect, SOG, band gap reference
AD9381
SYNC SEPARATOR THRESHOLD
TIMING
The output data clock signal is created so that its rising edge
always occurs between data transitions and can be used to latch
the output data externally.
FIELD 1
QUADRANT
2
3
FIELD 0
4
1
FIELD 1
2
3
FIELD 0
4
1
HSIN
VSIN
Figure 3 shows the timing operation of the AD9381.
VSYOUT
O/E FIELD
tDCYCLE
ODD FIELD
05689-005
tPER
Figure 5. VSYNC Filter—Odd/Even
DATACK
HDMI RECEIVER
tSKEW
05689-003
DATA
HSOUT
Figure 3. Output Timing
VSYNC FILTER AND ODD/EVEN FIELDS
The VSYNC filter eliminates spurious VSYNCs, maintains a
consistent timing relationship between the VSYNC and HSYNC
output signals, and generates the odd/even field output.
The filter works by examining the placement of VSYNC
with respect to HSYNC and, if necessary, slightly shifting
it in time at the VSOUT output. The goal is to keep the
VSYNC and HSYNC leading edges from switching at the
same time, eliminating confusion as to when the first line
of a frame occurs. Enabling the VSYNC filter is done with
Register 0x21[5]. Use of the VSYNC filter is recommended for
all cases, including interlaced video, and is required when using
the HSYNC per VSYNC counter. Figure 4 and Figure 5
illustrate even/odd field determination in two situations.
FIELD 1
2
3
FIELD 0
4
1
FIELD 1
2
3
FIELD 0
4
1
HSIN
VSIN
EVEN FIELD
Figure 4.
05689-004
VSOUT
O/E FIELD
The earlier digital visual interface (DVI) format was restricted
to an RGB 24-bit color space only. Embedded in this data
stream were HSYNCs, VSYNCs, and display enable (DE)
signals, but no audio information. The HDMI specification
allows transmission of all the DVI capabilities, but adds several
YCrCb formats that make the inclusion of a programmable
color space converter (CSC) a very desirable feature. With this,
the scaler following the AD9381 can specify that it always
wishes to receive a particular format—for instance, 4:2:2
YCrCb—regardless of the transmitted mode. If RGB is sent, the
CSC can easily convert that to 4:2:2 YCrCb while relieving the
scaler of this task.
In addition, the HDMI specification supports the transmission
of up to eight channels of S/PDIF or I2S audio. The audio
information is packetized and transmitted during the video
blanking periods along with specific information about the
clock frequency. Part of this audio information (audio
Infoframe) tells the user how many channels of audio are being
transmitted, where they should be placed, information
regarding the source (make, model), and other data.
SYNC SEPARATOR THRESHOLD
QUADRANT
The HDMI receiver section of the AD9381 allows the reception
of a digital video stream, which is backward compatible with
DVI and able to accommodate not only video of various formats (RGB, YCrCb 4:4:4, 4:2:2), but also up to eight channels of
audio. Infoframes are transmitted carrying information about
the video format, audio clocks, and many other items necessary
for a monitor to use fully the information stream available.
DE GENERATOR
The AD9381 has an onboard generator for DE, for start of
active video (SAV) and for end of active video (EAV), all of
which is necessary for describing the complete data stream for a
BT656-compatible output. In addition to this particular output,
it is possible to generate the DE for cases in which a scaler is not
used. This signal alerts the following circuitry as to which are
displayable video pixels.
Rev. 0 | Page 10 of 44
AD9381
4:4:4 TO 4:2:2 FILTER
The AD9381 contains a filter that allows it to convert a signal
from YCrCb 4:4:4 to YCrCb 4:2:2 while maintaining the
maximum accuracy and fidelity of the original signal.
Input Color Space to Output Color Space
The AD9381 can accept a wide variety of input formats and
either retain that format or convert to another. Input formats
supported are:
•
4:4:4 YCrCb 8-bit
•
4:2:2 YCrCb 8-bit, 10-bit, and 12-bit
•
RGB 8-bit
One of the three channels is represented in Figure 6. In each
processing channel, the three inputs are multiplied by three
separate coefficients marked a1, a2, and a3. These coefficients
are divided by 4096 to obtain nominal values ranging from
–0.9998 to +0.9998. The variable labeled a4 is used as an offset
control. The CSC_Mode setting is the same for all three
processing channels. This multiplies all coefficients and offsets
by a factor of 2CSC_Mode.
The functional diagram for a single channel of the CSC, as
shown in Figure 6, is repeated for the remaining G and B
channels. The coefficients for these channels are b1, b2, b3, b4,
c1, c2, c3, and c4.
CSC_Mode[1:0]
Output modes supported are:
•
4:4:4 YCrCb 8-bit
•
4:2:2 YCrCb 8-bit, 10-bit, and 12-bit
•
Dual 4:2:2 YCrCb 8-bit
RIN [11:0]
×
×
1
4096
+
+
×4
2
×2
1
+
ROUT [11:0]
a2[12:0]
0
GIN [11:0]
Color Space Conversion (CSC) Matrix
×
×
1
4096
×
1
4096
BIN [11:0]
×
Figure 6. Single CSC Channel
A programming example and register settings for several
common conversions are listed in the Color Space Converter
(CSC) Common Settings section.
For a detailed functional description and more programming
examples, please refer to the application note AN-795, AD9800
Color Space Converter User's Guide.
The main inputs, RIN, GIN, and BIN come from the 8- to 12-bit
inputs from each channel. These inputs are based on the input
format detailed in Table 7. The mapping of these inputs to the
CSC inputs is shown in Table 8.
Table 8. CSC Port Mapping
CSC Input Channel
RIN
GIN
BIN
Rev. 0 | Page 11 of 44
05689-006
a3[12:0]
The CSC matrix in the AD9381 consists of three identical
processing channels. In each channel, three input values are
multiplied by three separate coefficients. Also included are an
offset value for each row of the matrix and a scaling multiple for
all values. Each value has a 13-bit, twos complement resolution
to ensure the signal integrity is maintained. The CSC is
designed to run at speeds up to 150 MHz supporting resolutions up to 1080p at 60 Hz. With any-to-any color space
support, formats such as RGB, YUV, YCbCr, and others are
supported by the CSC.
Input Channel
R/CR
Gr/Y
B/CB
a4[12:0]
a1[12:0]
AD9381
AUDIO PLL SETUP
SOURCE DEVICE
128 × fS
DIVIDE
BY
N
CYCLE
TIME
COUNTER
N
REGISTER
N
CP
8nF
CZ
80nF
PVD
RZ
1.5kΩ
FILT
SINK DEVICE
Figure 8. PLL Loop Filter Detail
CTS1
TMDS
VIDEO
CLOCK
In order to provide the most flexibility in configuring the audio
sampling clock, an additional PLL is employed. The PLL
characteristics are determined by the loop filter design, the PLL
charge pump current, and the VCO range setting. The loop
filter design is shown in Figure 8.
05689-010
Data contained in the audio infoframes, among other registers,
define for the AD9381 HDMI receiver not only the type of
audio, but the sampling frequency (fS). The audio infoframe also
contains information about the N and CTS values used to
recreate the clock. With this information it is possible to
regenerate the audio sampling frequency. The audio clock is
regenerated by dividing the 20-bit CTS value into the TMDS
clock, then multiplying by the 20-bit N value. This yields a
multiple of the fs (sampling frequency) of either 128 × fs or
256 × fs. It is possible for this to be specified up to 1024 × fs.
CLOCK
N1
MULTIPLY 128 × fS
BY
N
DIVIDE
BY
CTS
05689-007
1N
To fully support all audio modes for all video resolutions up to
1080p, it is necessary to adjust certain audio-related registers
from their power-on default values. Table 9 describes these
registers and gives their recommended settings.
AND CTS VALUES ARE TRANSMITTED USING THE
AUDIO CLOCK REGENERATION PACKET. VIDEO
CLOCK IS TRANSMITTED ON TMDS CLOCK CHANNEL.
Figure 7. N and CTS for Audio Clock
Table 9. AD9398 Audio Register Settings
Register
Bits
Function
Comments
7:0
7:4
7:6
5:3
2
Recommended
Setting
0x00
0x40
01
010
1
0x01
0x02
0x03
PLL Divisor (MSBs)
PLL Divisor (Lab’s)
VCO Range
Charge Pump Current
PLL Enable
The analog video PLL is also used for the audio clock
circuit when in HDMI mode. This is done automatically.
0x34
4
0
Audio Frequency Mode Override
0x58
7
1
PLL Enable
6:4
011
MCLK PLL Divisor
3
2:0
0
0**
N/CTS Disable
MCLK Sampling Frequency
Rev. 0 | Page 12 of 44
In HDMI mode, this bit enables a lower frequency to be
used for audio MCLK generation.
Allows the chip to determine the low frequency mode
of the audio PLL.
This enables the analog PLL to be used for audio MCLK
generation.
When the analog PLL is enabled for MCLK generation,
another frequency divider is provided. These bits set
the divisor to 4.
The N and CTS values should always be enabled.
000 = 128 × fS
001 = 256 × fS
010 = 384 × fS
011 = 512 × fS
AD9381
AUDIO BOARD LEVEL MUTING
This information is the fundamental difference between DVI
and HDMI transmissions and is located in read-only registers
R0x5A to R0xEE. In addition to this information, registers are
provided to indicate that new information has been received.
Registers with addresses ending in 0xX7 or 0xXF beginning at
R0x87 contain the new data flags (NDF) information. All of
these registers contain the same information and all are reset
once any of them are read. Although there is no external
interrupt signal, it is easy for the user to read any of these
registers and see if there is new information to be processed.
The audio can be muted through the infoframes or locally
via the serial bus registers. This can be controlled with
Register R0x57, Bits [7:4].
AVI Infoframes
The HDMI TMDS transmission contains Infoframes with
specific information for the monitor such as:
•
Audio information
•
2 to 8 channels of audio identified
•
Audio coding
•
Audio sampling frequency
OUTPUT DATA FORMATS
•
Speaker placement
•
N and CTS values (for reconstruction of the audio)
•
Muting
•
Source information
•
•
•
CD
•
SACD
•
DVD
The AD9398 supports 4:4:4, 4:2:2, double data-rate (DDR),
and BT656 output formats. Register 0x25[3:0] controls the
output mode. These modes and the pin mapping are shown
in Table 10.
Video information
•
Video ID code (per CEA861B)
•
Color space
•
Aspect ratio
•
Horizontal and vertical bar information
•
MPEG frame information (I, B, or P frame)
Vendor (transmitter source) name and product model
.
Table 10.
Port
Bit
4:4:4
4:2:2
4:4:4 DDR
4:2:2 to 12
1
Red
7
6
5
4
Red/Cr [7:0]
CbCr [7:0]
DDR ↑ 1 G [3:0]
DDR ↓ R [7:0]
CbCr [11:0]
3
2
1
DDR ↑ B [7:4]
0
Green
7
6
5
4
Green/Y [7:0]
Y [7:0]
DDR ↑ B [3:0]
DDR ↓ G [7:4]
Arrows in the table indicate clock edge. Rising edge of clock = ↑, falling edge = ↓.
Rev. 0 | Page 13 of 44
Blue
7
6
5
4
3
Blue/Cb [7:0]
DDR 4:2:2 ↑ CbCr ↓ Y, Y
DDR 4:2:2 ↑ CbCr [11:0]
DDR 4:2:2 ↓ Y,Y [11:0]
Y [11:0]
3
2
1
0
2
1
0
AD9381
2-WIRE SERIAL REGISTER MAP
The AD9381 is initialized and controlled by a set of registers that determines the operating modes. An external controller is employed to
write and read the control registers through the 2-wire serial interface port.
Table 11. Control Register Map
Hex
Address
0x00
0x01
0x02
0x03
Read/Write
or Read Only
Read
Read/Write
Read/Write
Read/Write
0x11
Read/Write
0x12
Read/Write
Bits
[7:0]
[7:0]
[7:4]
[7:6]
[5:3]
[2]
Default Value
00000000
01101001
1101****
01******
**001***
*****0**
Register Name
Chip Revision
PLL Divider MSB
PLL Divider
VCO Range
Charge Pump
PLL Enable
[7]
0*******
HSYNC Source
[6]
*0******
HSYNC Source Override
[5]
**0*****
VSYNC Source
[4]
***0****
VSYNC Source Override
[3]
****0***
Channel Select
[2]
*****0**
Channel Select Override
[1]
******0*
Interface Select
[0]
*******0
Interface Override
[7]
1*******
Input HSYNC Polarity
[6]
*0******
HSYNC Polarity Override
[5]
**1*****
Input VSYNC Polarity
[4]
***0****
VSYNC Polarity Override
0x17
0x18
0x22
0x23
Read
Read
Read/Write
Read/Write
[3:0]
[7:0]
[7:0]
[7:0]
****0000
00000000
4
32
HSYNCs Per VSYNC MSB
HSYNCs Per VSYNC
VSYNC Duration
HSYNC Duration
0x24
Read/Write
[7]
1*******
HSYNC Output Polarity
[6]
*1******
VSYNC Output Polarity
[5]
**1*****
DE Output Polarity
Rev. 0 | Page 14 of 44
Description
Chip revision ID. Revision is read [7:4]. [3:0].
PLL feedback divider value MSB.
PLL feedback divider value.
VCO range.
Charge pump current control for PLL.
This bit enables a lower frequency to be used for
audio MCLK generation
0 = HSYNC.
1 = SOG.
0 = auto HSYNC source.
1 = manual HSYNC source.
0 = VSYNC.
1 = VSYNC from SOG.
0 = auto HSYNC source.
1 = manual HSYNC source.
0 = Channel 0.
1 = Channel 1.
0 = autochannel select.
1 = manual channel select.
0 = analog interface.
1 = digital interface.
0 = auto-interface select.
1 = manual interface select.
0 = active low.
1 = active high.
0 = auto HSYNC polarity.
1 = manual HSYNC polarity.
0 = active low.
1 = active high.
0 = auto VSYNC polarity.
1 = manual VSYNC polarity.
MSB of HSYNCs per VSYNC.
HSYNCs per VSYNC count.
VSYNC duration.
HSYNC duration. Sets the duration of the output
HSYNC in pixel clocks.
Output HSYNC polarity.
0 = active low out.
1 = active high out.
Output VSYNC polarity.
0 = active low out.
1 = active high out.
Output DE polarity.
0 = active low out.
1 = active high out.
AD9381
Hex
Address
0x25
0x26
0x27
Read/Write
or Read Only
Read/Write
Read/Write
Read/Write
Bits
[4]
Default Value
***1****
Register Name
Field Output Polarity
[0]
*******0
Output CLK Invert
[7:6]
01******
Output CLK Select
[5:4]
**11****
Output Drive Strength
[3:2]
****00**
Output Mode
[1]
[0]
******1*
*******0
[7]
[5]
[4]
[3]
0*******
**0*****
***0****
****1***
Primary Output Enable
Secondary Output
Enable
Output Three-State
SPDIF Three-State
I2S Three-State
Power-Down Pin Polarity
[2:1]
*****00*
Power-Down Pin
Function
[0]
*******0
Power-Down
[7]
1*******
Auto Power-Down
Enable
[6]
*0******
HDCP A0
[5]
**0*****
MCLK External Enable
[4]
***0****
BT656 EN
[3]
****0***
Force DE Generation
Rev. 0 | Page 15 of 44
Description
Output field polarity.
0 = active low out.
1 = active high out.
0 = don’t invert clock out.
1 = invert clock out.
Selects which clock to use on output pin. 1× CLK is
divided down from TMDS clock input when pixel
repetition is in use.
00 = ½× CLK.
01 = 1× CLK.
10 = 2× CLK.
11 = 90° phase 1× CLK.
Sets the drive strength of the outputs.
00 = lowest, 11 = highest.
Selects the data output mapping.
00 = 4:4:4 mode (normal).
01 = 4:2:2 + DDR 4:2:2 on blue.
10 = DDR 4:4:4 + DDR 4:2:2 on blue.
11 = 12-bit 4:2:2 (HDMI option only).
Enables primary output.
Enables secondary output (DDR 4:2:2 in Output
Mode 1 and Mode 2).
Three-state the outputs.
Three-state the S/PDIF output.
Three-state the I2S output and the MCLK out.
Sets polarity of power-down pin.
0 = active low.
1 = active high.
Selects the function of the power-down pin.
00 = power-down.
01 = power-down and three-state SOG.
10 = three-state outputs only.
11 = three-state outputs and SOG.
0 = normal.
1 = power-down.
0 = disable auto low power state.
1 = enable auto low power state.
Sets the LSB of the address of the HDCP I2C.
Set to 1 only for a second receiver in a dual-link
configuration.
0 = use internally generated MCLK.
1 = use external MCLK input.
If an external MCLK is used, it must be locked to the
video clock according to the CTS and N available in
the I2C. Any mismatch between the internal MCLK
and the input MCLK results in dropped or repeated
audio samples.
Enables EAV/SAV codes to be inserted into the
video output data.
Allows use of the internal DE generator in DVI
mode.
AD9381
Hex
Address
Read/Write
or Read Only
0x28
Bits
[2:0]
Default Value
*****000
Register Name
Interlace Offset
Read/Write
[7:2]
011000**
VS Delay
0x29
Read/Write
[1:0]
[7:0]
******01
00000100
HS Delay MSB
HS Delay
0x2A
0x2B
0x2C
0x2D
0x2E
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
[3:0]
[7:0]
[3:0]
[7:0]
[7]
****0101
00000000
****0010
11010000
0*******
Line Width MSB
Line Width
Screen Height MSB
Screen Height
Ctrl EN
[6:5]
*00*****
I2S Out Mode
[4:0]
[6]
[5]
[4]
***11000
*0******
**0*****
***0****
I2S Bit Width
TMDS Sync Detect
TMDS Active
AV Mute
[3]
[2:0]
[6]
****0***
*****000
*0******
HDCP Keys Read
HDMI Quality
HDMI Content Encrypted
[5]
[4]
[3:0]
**0*****
***0****
****0000
DVI HSYNC Polarity
DVI VSYNC Polarity
HDMI Pixel Repetition
[7:4]
1001****
MV Pulse Max
[3:0]
****0110
MV Pulse Min
[7]
0*******
MV Oversample En
[6]
*0******
MV Pal En
[5:0]
[7]
**001101
1*******
MV Line Count Start
MV Detect Mode
[6]
*0******
MV Settings Override
[5:0]
[7:6]
**010101
10******
MV Line Count End
MV Pulse Limit Set
[5]
**0*****
Low Freq Mode
0x2F
0x30
0x31
0x32
0x33
0x34
Read
Read
Read/Write
Read/Write
Read/Write
Read/Write
Rev. 0 | Page 16 of 44
Description
Sets the difference (in HSYNCs) in field length
between Field 0 and Field 1.
Sets the delay (in lines) from the VSYNC leading
edge to the start of active video.
MSB, Register 0x29.
Sets the delay (in pixels) from the HSYNC leading
edge to the start of active video.
MSB, Register 0x2B.
Sets the width of the active video line in pixels.
MSB, Register 0x2D.
Sets the height of the active screen in lines.
Allows Ctrl [3:0] to be output on the I2S data pins.
00 = I2S mode.
01 = right-justified.
10 = left-justified.
11 = raw IEC60958 mode.
Sets the desired bit width for right-justified mode.
Detects a TMDS DE.
Detects a TMDS clock.
Gives the status of AV mute based on general
control packets.
Returns 1 when read of EEPROM keys is successful.
Returns quality number based on DE edges.
This bit is high when HDCP decryption is in use
(content is protected). The signal goes low when
HDCP is not being used. Customers can use this bit
to allow copying of the content. The bit should be
sampled at regular intervals because it can change
on a frame-by-frame basis.
Returns DVI HSYNC polarity.
Returns DVI VSYNC polarity.
Returns current HDMI pixel repetition amount.
0 = 1×, 1 = 2×, ... .The clock and data outputs
automatically de-repeat by this value.
Sets the maximum pseudo sync pulse width for
Macrovision® detection.
Sets the minimum pseudo sync pulse width for
Macrovision detection.
Tells the Macrovision detection engine whether we
are oversampling or not.
Tells the Macrovision detection engine to enter PAL
mode.
Sets the start line for Macrovision detection.
0 = standard definition.
1 = progressive scan mode.
0 = use hard-coded settings for line counts and
pulse widths.
1 = use I2C values for these settings.
Sets the end line for Macrovision detection.
Sets the number of pulses required in the last 3
lines (SD mode only).
Sets audio PLL to low frequency mode. Low
frequency mode should only be set for pixel clocks
<80 MHz.
AD9381
Hex
Address
Read/Write
or Read Only
Bits
[4]
Default Value
***0****
Register Name
Low Freq Override
[3]
****0***
Up Conversion Mode
[2]
[1]
*****0**
******0*
CrCb Filter Enable
CSC_Enable
0x35
Read/Write
[6:5]
*01* ****
CSC_Mode
0x36
Read/Write
[4:0]
[7:0]
***01100
01010010
CSC_Coeff_A1 MSB
CSC_Coeff_A1 LSB
0x37
0x38
Read/Write
Read/Write
[4:0]
[7:0]
***01000
00000000
CSC_Coeff_A2 MSB
CSC_Coeff_A2 LSB
0x39
0x3A
Read/Write
Read/Write
[4:0]
[7:0]
***00000
00000000
CSC_Coeff_A3 MSB
CSC_Coeff_A3 LSB
0x3B
0x3C
Read/Write
Read/Write
[4:0]
[7:0]
***11001
11010111
CSC_Coeff_A4 MSB
CSC_Coeff_A4 LSB
0x3D
0x3E
Read/Write
Read/Write
[4:0]
[7:0]
***11100
01010100
CSC_Coeff_B1 MSB
CSC_Coeff_B1 LSB
0x3F
0x40
Read/Write
Read/Write
[4:0]
[7:0]
***01000
00000000
CSC_Coeff_B2 MSB
CSC_Coeff_B2
0x41
0x42
Read/Write
Read/Write
[4:0]
[7:0]
***11110
10001001
CSC_Coeff_B3 MSB
CSC_Coeff_B3 LSB
Rev. 0 | Page 17 of 44
Description
Allows the previous bit to be used to set low
frequency mode rather than the internal autodetect.
0 = repeat Cr and Cb values.
1 = interpolate Cr and Cb values.
Enables the FIR filter for 4:2:2 CrCb output.
Enables the color space converter (CSC). The
default settings for the CSC provide HDT-to-RGB
conversion.
Sets the fixed-point position of the CSC
coefficients, including the A4, B4, and C4 offsets.
00 = ±1.0, −4096 to 4095.
01 = ±2.0, −8192 to 8190.
1× = ±4.0, −16384 to 16380.
MSB, Register 0x36.
Color space converter (CSC) coefficient for
equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x38.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x3A.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x3C.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x3E.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x40.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x42.
Color space converter (CSC) coefficient for
equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
AD9381
Hex
Address
0x43
0x44
Read/Write
or Read Only
Read/Write
Read/Write
Bits
[4:0]
[7:0]
Default Value
***00010
10010010
Register Name
CSC_Coeff_B4 MSB
CSC_Coeff_B4 LSB
0x45
0x46
Read/Write
Read/Write
[4:0]
[7:0]
***00000
00000000
CSC_Coeff_C1 MSB
CSC_Coeff_C1 LSB
0x47
0x48
Read/Write
Read/Write
[4:0]
[7:0]
***01000
00000000
CSC_Coeff_C2 MSB
CSC_Coeff_C2 LSB
0x49
0x4A
Read/Write
Read/Write
[4:0]
[7:0]
***01110
10000111
CSC_Coeff_C3 MSB
CSC_Coeff_C3 LSB
0x4B
0x4C
Read/Write
Read/Write
[4:0]
[7:0]
***11000
10111101
CSC_Coeff_C4 MSB
CSC_Coeff_C4 LSB
0x50
0x56
Read/Write
Read/Write
[7:0]
[7:0]
00100000
00001111
Test
Test
0x57
Read/Write
0*******
*0******
****0***
*****0**
0x58
Read/Write
[7]
[6]
[3]
[2]
[7]
[6:4]
A/V Mute Override
AV Mute Value
Disable Video Mute
Disable Audio Mute
MCLK PLL Enable
MCLK PLL_N
0x59
Read/Write
[3]
N_CTS_Disable
[2:0]
MCLK FS_N
[6]
[5]
MDA/MCL PU
CLK Term O/R
[4]
[2]
Manual CLK Term
FIFO Reset UF
[1]
FIFO Reset OF
[0]
MDA/MCL Three-State
Rev. 0 | Page 18 of 44
Description
MSB, Register 0x44.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x46.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x48.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x4A.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
MSB, Register 0x4C.
CSC coefficient for equation:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
Must be written to 0x20 for proper operation.
Must be written to default of 0x0F for proper
operation.
A1 overrides the AV mute value with Bit 6.
Sets AV mute value if override is enabled.
Disables mute of video during AV mute.
Disables mute of audio during AV mute.
MCLK PLL enable—uses analog PLL.
MCLK PLL N [2:0]—this controls the division of the
MCLK out of the PLL: 0 = /1, 1 = /2, 2 = /3, 3 = /4,
etc.
Prevents the N/CTS packet on the link from writing
to the N and CTS registers.
Controls the multiple of 128 Fs, used for MCLK out .
0 = 128 fS, 1 = 256 fS, 2 = 384, 7 = 1024 fS.
This disables the MDA/MCL pull-ups.
Clock termination power-down override: 0 = auto,
1 = manual.
Clock termination: 0 = normal, 1 = disconnected.
This bit resets the audio FIFO if underflow is
detected.
This bit resets the audio FIFO if overflow is
detected.
This bit three-states the MDA/MCL lines.
AD9381
Hex
Address
0x5A
Read/Write
or Read Only
Read
0x5B
0x5E
Read
Read
Bits
[6:0]
[3]
[7:6]
[5:3]
Default Value
Register Name
Packet Detected
HDMI Mode
Channel Status
2
1
0
0x5F
Read
[7:0]
0x60
Read
0x61
Read
[7:4]
[3:0]
[5:4]
[3:0]
Audio Channel Status
Channel Status Category
Code
Channel Number
Source Number
Clock Accuracy
Sampling Frequency
Rev. 0 | Page 19 of 44
Description
These 7 bits are updated if any specific packet has
been received since last reset or loss of clock
detect. Normal is 0x00.
Bit Data Packet Detected
0
AVI infoframe.
1
Audio infoframe.
2
SPD infoframe.
3
MPEG source infoframe.
4
ACP packets.
5
ISRC1 packets.
6
ISRC2 packets.
0 = DVI, 1 = HDMI.
Mode = 00. All others are reserved.
When Bit 1 = 0 (Linear PCM).
000 = 2 audio channels without pre-emphasis.
001 = 2 audio channels with 50/15 μs preemphasis.
010 = reserved.
011 = reserved.
0 = software for which copyright is asserted.
1 = software for which no copyright is asserted.
0 = audio sample word represents linear PCM
samples.
1 = audio sample word used for other purposes.
0 = consumer use of channel status block.
Clock accuracy.
00 = Level II.
01 = Level III.
10 = Level I.
11 = reserved.
0011 =32 kHz
0000 = 44.1 kHz
1000 = 88.2 kHz.
1100 = 176.4 kHz.
0010 = 48 kHz.
1010 = 96 kHz.
1110 = 192 kHz.
AD9381
Hex
Address
0x62
Read/Write
or Read Only
Read
Bits
[3:0]
0x7B
Read
[7:0]
CTS [19:12]
0x7C
0x7D
Read
Read
Read
[7:0]
[7:4]
[3:0]
CTS [11:4]
CTS [3:0]
N [19:16]
0x7E
0x7F
Read
Read
[7:0]
[7:0]
0x80
0x81
Read
Read
[7:0]
[6:5]
N [15:8]
N [7:0]
AVI Infoframe
AVI Infoframe Version
0x82
Read
Default Value
Register Name
Word Length
4
Active Format
Information Status
[3:2]
Bar Information
[1:0]
Scan Information
[7:6]
Colorimetry
[5:4]
Picture Aspect Ratio
Rev. 0 | Page 20 of 44
Description
Word length.
0000 not specified.
0100 = 16 bits.
0011 = 17 bits.
0010 = 18 bits.
0001 = 19 bits.
0101 = 20 bits.
1000 not specified.
1100 = 20 bits.
1011 = 21 bits.
1010 = 22 bits.
1001 = 23 bits.
1101 = 24 bits.
Cycle time stamp—this 20-bit value is used with
the N value to regenerate an audio clock. For
remaining bits, see Register 0x7C and Register
0x7D.
20-bit N used with CTS to regenerate the audio
clock. For remaining bits, see Register 0x7E and
Register 0x7F.
Y [1:0] Indicates RGB, 4:2:2 or 4:4:4.
00 = RGB.
01 = YCbCr 4:2:2.
10 = YCbCr 4:4:4.
Active format information present.
0 = no data.
1 = active format information valid.
B [1:0].
00 = no bar information.
01 =horizontal bar information valid.
10 = vertical bar information valid.
11 = horizontal and vertical bar information valid.
S [1:0].
00 = no information.
01 = overscanned (television).
10 = underscanned (computer).
C [1:0].
00 = no data.
01 = SMPTE 170M, ITU601.
10 = ITU709.
M [1:0].
00 = no data.
01 = 4:3.
10 = 16:9.
AD9381
Hex
Address
0x83
Read/Write
or Read Only
Read
Bits
[3:0]
[1:0]
Default Value
Register Name
Active Format Aspect
Ratio
Nonuniform Picture
Scaling
0x84
Read
[6:0]
Video Identification Code
0x85
Read
[3:0]
Pixel Repeat
0x86
Read
[7:0]
Active Line Start LSB
0x87
Read
[6:0]
New Data Flags
0x88
0x89
Read
Read
[7:0]
[7:0]
Active Line Start MSB
Active Line End LSB
0x8A
0x8B
Read
Read
[7:0]
[7:0]
Active Line End MSB
Active Pixel Start LSB
0x8C
0x8D
Read
Read
[7:0]
[7:0]
Active Pixel Start MSB
Active Pixel End LSB
0x8E
0x8F
Read
Read
[7:0]
[6:0]
Active Pixel End MSB
New Data Flags
Rev. 0 | Page 21 of 44
Description
R [3:0].
1000 = same as picture aspect ratio.
1001 = 4:3 (center).
1010 = 16:9 (center).
1011 = 14:9 (center).
SC [1:0].
00 = no known nonuniform scaling.
01 = picture has been scaled horizontally.
10 = picture has been scaled vertically.
11 = picture has been scaled horizontally and
vertically.
VIC [6:0] video identification code—refer to CEA
EDID short video descriptors.
PR [3:0]—This specifies how many times a pixel has
been repeated.
0000 = no repetition (pixel sent once).
0001 = pixel sent twice (repeated once).
0010 = pixel sent 3 times.
1001 = pixel sent 10 times.
0xA—0xF reserved.
This represents the line number of the end of the
top horizontal bar. If 0, there is no horizontal bar.
Combines with Register 0x88 for a 16-bit value.
New data flags. These 8 bits are updated if any
specific data changes. Normal (no NDFs) is 0x00.
When any NDF register is read, all bits reset to 0x00.
All NDF registers contain the same data.
Bit Data Packet Changed
0
AVI infoframe.
1
Audio infoframe.
2
SPD infoframe.
3
MPEG source infoframe.
4
ACP packets.
5
ISRC1 packets.
6
ISRC2 packets.
Active line start MSB (see Register 0x86).
This represents the line number of the beginning of
a lower horizontal bar. If greater than the number
of active video lines, there is no lower horizontal
bar. Combines with Register 0x8A for a 16-bit value.
Active line end MSB. See Register 0x89.
This represents the last pixel in a vertical pillar bar
at the left side of the picture. If 0, there is no left
bar. Combines with Register 0x8C for a 16-bit value.
Active pixel start MSB. See Register 0x8B.
This represents the first horizontal pixel in a vertical
pillar-bar at the right side of the picture. If greater
than the maximum number of horizontal pixels,
there is no vertical bar. Combines with Register
0x8E for a16-bit value.
Active pixel end MSB. See Register 0x8D.
New data flags (see 0x87).
AD9381
Hex
Address
0x90
0x91
0x92
Read/Write
or Read Only
Read
Read
Read
Bits
[7:0]
[7:4]
Default Value
Register Name
Audio Infoframe Version
Audio Coding Type
[2:0]
Audio Coding Count
[4:2]
Sampling Frequency
[1:0]
Sample Size
0x93
Read
[7:0]
Max Bit Rate
0x94
Read
[7:0]
Speaker Mapping
0x95
Read
7
Down-Mix
[6:3]
Level Shift
[7:0]
[6:0]
New Data Flags
0x96
0x97
Read
Read
Rev. 0 | Page 22 of 44
Description
CT [3:0]. Audio coding type.
0x00 = refer to stream header.
0x01 = IEC60958 PCM.
0x02 = AC3.
0x03 = MPEG1 (Layer 1 and Layer 2).
0x04 = MP3 (MPEG1 Layer 3).
0x05 = MPEG2 (multichannel).
0x06 = AAC.
0x07 = DTS.
0x08 = ATRAC.
CC [2:0]. Audio channel count.
000 = refer to stream header.
001 = 2 channels.
010 = 3 channels.
111 = 8 channels.
SF [2:0]. Sampling frequency.
000 = refer to stream header.
001 = 32 kHz.
010 = 44.1 kHz (CD).
011 = 48 kHz.
100 = 88.2 kHz.
101 = 96 kHz.
110 = 176.4 kHz.
111 = 192 kHz.
SS [1:0]. Sample size.
00 = refer to stream header.
01 = 16-bit.
10 = 20-bit.
11 = 24-bit.
Max bit rate (compressed audio only).The value of
this field multiplied by 8 kHz represents the
maximum bit rate.
CA [7:0]. Speaker mapping or placement for up to 8
channels. See Table 33.
DM_INH—down-mix inhibit.
0 = permitted or no information.
1 = prohibited.
LSV [3:0]—level shift values with attenuation
information.
0000 = 0 dB attenuation.
0001 = 1 dB attenuation.
…..
1111 = 15 dB attenuation.
Reserved.
New data flags (see 0x87).
AD9381
Hex
Address
Read/Write
or Read Only
Bits
0x98
Read
[7:0]
0x99
Read
[7:0]
0x9A
0x9B
0x9C
0x9D
0x9E
0x9F
0xA0
0xA1
0xA2
Read
Read
Read
Read
Read
Read
Read
Read
Read
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
0xA3
0xA4
0xA5
0xA6
0xA7
0xA8
0xA9
0xAA
0xAB
0xAC
0xAD
0xAE
0xAF
0xB0
0xB1
0xB2
0xB3
0xB4
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
0xB7
Read
[6:0]
Default Value
Register Name
Description
Source Product Description (SPD) Infoframe
Source Product
Description (SPD)
Infoframe Version
Vendor Name
Vendor name character 1 (VN1) 7-bit ASCII code.
Character 1
The first character in 8 that is the name of the
company that appears on the product.
VN2
VN2.
VN3
VN3.
VN4
VN4.
VN5
VN5.
VN6
VN6.
New Data Flags
New data flags (see 0x87).
VN7
VN7.
VN8
VN8.
Product Description
Product Description Character 1 (PD1) 7-bit ASCII
Character 1
code. The first character of 16 that contains the
model number and a short description.
PD2
PD2.
PD3
PD3.
PD4
PD4.
PD5
PD5.
New Data Flags
New data flags (see 0x87).
PD6
PD6.
PD7
PD7.
PD8
PD8.
PD9
PD9.
PD10
PD10.
PD11
PD11.
PD12
PD12.
New Data Flags
New data flags (see 0x87).
PD13
PD13.
PD14
PD14.
PD15
PD15.
PD16
PD16.
Source Device
This is a code that classifies the source device.
Information Code
0x00 = unknown.
0x01 = digital STB.
0x02 = DVD.
0x03 = D-VHS.
0x04 = HDD video.
0x05 = DVC.
0x06 = DSC.
0x07 = video CD.
0x08 = game.
0x09 = PC general.
New Data Flags
New data flags (see 0x87).
Rev. 0 | Page 23 of 44
AD9381
Hex
Address
Read/Write
or Read Only
Bits
0xB8
Read
[7:0]
0xB9
Read
[7:0]
0xBA
0xBB
0xBC
Read
Read
Read
[7:0]
[7:0]
[7:0]
4
Field Repeat
MPEG Frame
0xBD
Read
[1:0]
0xBE
0xBF
0xC0
Read
Read
Read
[7:0]
[6:0]
[7:0]
0xC1
0xC2
0xC3
0xC4
0xC5
0xC6
0xC7
0xC8
0xC9
0xCA
0xCB
0xCC
0xCD
0xCE
0xCF
0xD0
0xD1
Default Value
Register Name
MPEG Source Infoframe
MPEG Source Infoframe
Version
MB(0)
MB[1]
MB[2]
New Data Flags
Audio Content
Protection Packet (ACP)
Type
Read
Read
Read
Read
Rea
Read
Read
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
7
ACP Packet Byte 0
ACP_PB1
ACP_PB2
ACP_PB3
ACP_PB4
ACP_PB5
NDF
ISRC1 Continued
Read
6
ISRC1 Valid
[2:0]
ISRC1 Status
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
ISRC1 Packet Byte 0
ISRC1_PB1
ISRC1_PB2
ISRC1_PB3
ISRC1_PB4
ISRC1_PB5
NDF
ISRC1_PB6
ISRC1_PB7
Read
Read
Read
Read
Read
Read
Read
Read
Read
Rev. 0 | Page 24 of 44
Description
MB [0] (Lower byte of MPEG bit rate: Hz). The lower
8 bits of 32 bits (4 bytes) that specify the MPEG bit
rate in Hz.
MB [1].
MB [2].
MB [3] (upper byte).
FR—New field or repeated field.
0 = New field or picture.
1 = Repeated field.
MF [1:0] This identifies whether frame is an I, B, or P
picture.
00 = unknown.
01 = I picture.
10 = B picture.
11 = P picture.
Reserved.
New data flags (see 0x87).
Audio content protection packet (ACP) type.
0x00 = generic audio.
0x01 = IEC 60958-identified audio.
0x02 = DVD-audio.
0x03 = reserved for super audio CD (SACD).
0x04 = 0xFF reserved.
ACP Packet Byte 0 (ACP_PB0).
ACP_PB1.
ACP_PB2.
ACP_PB3.
ACP_PB4.
ACP_PB5.
New data flags (see 0x87).
International standard recording code (ISRC1)
continued. This indicates an ISRC2 packet is being
transmitted.
0 = ISRC1 status bits and PBs not valid.
1 = ISRC1 status bits and PBs valid.
001 = starting position.
010 = intermediate position.
100 = final position.
ISRC1 Packet Byte 0 (ISRC1_PB0).
ISRC1_PB1.
ISRC1_PB2.
ISRC1_PB3.
ISRC1_PB4.
ISRC1_PB5.
New data flags (see 0x87).
ISRC1_PB6.
ISRC1_PB7.
AD9381
Hex
Address
0xD2
0xD3
0xD4
0xD5
0xD6
0xD7
0xD8
0xD9
0xDA
0xDB
0xDC
Read/Write
or Read Only
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Bits
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
0xDD
0xDE
0xDF
0xE0
0xE1
0xE2
0xE3
0xE4
0xE5
0xE6
0xE7
0xE8
0xE9
0xEA
0xEB
0xEC
0xED
0xEE
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[6:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
[7:0]
Default Value
Register Name
ISRC1_PB8
ISRC1_PB9
ISRC1_PB10
ISRC1_PB11
ISRC1_PB12
NDF
ISRC1_PB13
ISRC1_PB14
ISRC1_PB15
ISRC1_PB16
ISRC2 Packet Byte 0
ISRC2_PB1
ISRC2_PB2
New Data Flags
ISRC2_PB3
ISRC2_PB4
ISRC2_PB5
ISRC2_PB6
ISRC2_PB7
ISRC2_PB8
ISRC2_PB9
New Data Flags
ISRC2_PB10
ISRC2_PB11
ISRC2_PB12
ISRC2_PB13
ISRC2_PB14
ISRC2_PB15
ISRC2_PB16
Rev. 0 | Page 25 of 44
Description
ISRC1_PB8.
ISRC1_PB9.
ISRC1_PB10.
ISRC1_PB11.
ISRC1_PB12.
New data flags (see 0x87).
ISRC1_PB13.
ISRC1_PB14.
ISRC1_PB15.
ISRC1_PB16.
ISRC2 Packet Byte 0 (ISRC2_PB0). This is transmitted
only when the ISRC_ continue bit (Register 0xC8,
Bit 7) is set to 1.
ISRC2_PB1.
ISRC2_PB2.
New data flags (see 0x87).
ISRC2_PB3.
ISRC2_PB4.
ISRC2_PB5.
ISRC2_PB6.
ISRC2_PB7.
ISRC2_PB8.
ISRC2_PB9.
New data flags (see 0x87).
ISRC2_PB10.
ISRC2_PB11.
ISRC2_PB12.
ISRC2_PB13.
ISRC2_PB14.
ISRC2_PB15.
ISRC2_PB16.
AD9381
2-WIRE SERIAL CONTROL REGISTER DETAILS
CHIP IDENTIFICATION
0x12—Bit[4] VSYNC Polarity Override
0x00—Bits[7:0] Chip Revision
0 = auto VSYNC polarity, 1 = manual VSYNC polarity. Manual
VSYNC polarity is defined in Register 0x11, Bit 5. The powerup default is 0.
An 8-bit value that reflects the current chip revision.
0x11—Bit[7] HSYNC Source
0x17—Bits[3:0] HSYNCs per VSYNC MSBs
0 = HSYNC, 1 = SOG. The power-up default is 0. These
selections are ignored if Register 0x11, Bit 6 = 0.
0x11—Bit[6] HSYNC Source Override
0 = auto HSYNC source, 1 = manual HSYNC source. Manual
HSYNC source is defined in Register 0x11, Bit 7. The power-up
default is 0.
The 4 MSBs of the 12-bit counter that reports the number of
HSYNCs/VSYNC on the active input. This is useful in
determining the mode and an aid in setting the PLL divide
ratio.
0x18—Bits[7:0] HSYNCs per VSYNC LSBs
0x11—Bit[5] VSYNC Source
The 8 LSBs of the 12-bit counter that reports the number of
HSYNCs/VSYNC on the active input.
0 = VSYNC, 1 = VSYNC from SOG. The power-up default is 0.
These selections are ignored if Register 0x11, Bit 4 = 0.
0x21—Bit[5] VSYNC Filter Enable
0x11—Bit[4] VSYNC Source Override
0 = auto VSYNC source, 1 = manual VSYNC source. Manual
VSYNC source is defined in Register 0x11, Bit 5. The power-up
default is 0.
0x11—Bit[3] Channel Select
0 = Channel 0, 1 = Channel 1. The power-up default is 0. These
selections are ignored if Register 0x11, Bit 2 = 0.
0x11—Bit[2] Channel Select Override
0 = auto channel select, 1 = manual channel select. Manual
channel select is defined in Register 0x11, Bit 3. The power-up
default is 0.
0x11—Bit[1] Interface Select
0 = analog interface, 1 = digital interface. The power-up default
is 0. These selections are ignored if Register 0x11, Bit 0 = 0.
0x11—Bit[0] Interface Select Override
0 = auto interface select, 1 = manual interface select. Manual
interface select is defined in Register 0x11, Bit 1. The power-up
default is 0.
0x12—Bit[7] Input HSYNC Polarity
0 = active low, 1 = active high. The power-up default is 1. These
selections are ignored if Register 10x2, Bit 6 = 0.
The purpose of the VSYNC filter is to guarantee the position of
the VSYNC edge with respect to the HSYNC edge and to
generate a field signal. The filter works by examining the
placement of VSYNC and regenerating a correctly placed
VSYNC one line later. The VSYNC is first checked to see
whether it occurs in the Field 0 position or the Field 1 position.
This is done by checking the leading edge position against the
sync separator threshold and the HSYNC position. The HSYNC
width is divided into four quadrants with Quadrant 1 starting at
the HSYNC leading edge plus a sync separator threshold. If the
VSYNC leading edge occurs in Quadrant 1 or Quadrant 4, the
field is set to 0 and the output VSYNC is placed coincident with
the HSYNC leading edge. If the VSYNC leading edge occurs in
Quadrant 2 or Quadrant 3, the field is set to 1 and the output
VSYNC leading edge is placed in the center of the line. In this
way, the VSYNC filter creates a predictable relative position
between HSYNC and VSYNC edges at the output.
If the VSYNC occurs near the HSYNC edge, this guarantees
that the VSYNC edge follows the HSYNC edge. This performs
filtering also in that it requires a minimum of 64 lines between
VSYNCs. The VSYNC filter cleans up extraneous pulses that
might occur on the VSYNC. This should be enabled whenever
the HSYNC/VSYNC count is used. Setting this bit to 0 disables
the VSYNC filter. Setting this bit to 1 enables the VSYNC filter.
Power-up default is 0.
0x21—Bit[4] VSYNC Duration Enable
0x12—Bit[6] HSYNC Polarity Override
0 = auto HSYNC polarity, 1 = manual HSYNC polarity. Manual
HSYNC polarity is defined in Register 0x11, Bit 7. The powerup default is 0.
0x12—Bit[5] Input VSYNC Polarity
This enables the VSYNC duration block that is designed to be
used with the VSYNC filter. Setting the bit to 0 leaves the
VSYNC output duration unchanged; setting the bit to 1 sets the
VSYNC output duration based on Register 0x22. The power-up
default is 0.
0 = active low, 1 = active high. The power-up default is 1. These
selections are ignored if Register 0x11, Bit 4 = 0.
Rev. 0 | Page 26 of 44
AD9381
0x22—Bits[7:0] VSYNC Duration
0x25—Bits[5:4] Output Drive Strength
This is used to set the output duration of the VSYNC, and is
designed to be used with the VSYNC filter. This is valid only if
Register 0x21, Bit 4 is set to 1. Power-up default is 4.
These two bits select the drive strength for all the high speed
digital outputs (except VSOUT, A0 and O/E field). Higher drive
strength results in faster rise/fall times and in general makes it
easier to capture data. Lower drive strength results in slower
rise/fall times and helps to reduce EMI and digitally generated
power supply noise. The power-up default setting is 11.
0x23—Bits[7:0]HSYNC Duration
An 8-bit register that sets the duration of the HSYNC output
pulse. The leading edge of the HSYNC output is triggered by
the internally generated, phase-adjusted PLL feedback clock.
The AD9381 then counts a number of pixel clocks equal to the
value in this register. This triggers the trailing edge of the
HSYNC output, which is also phase-adjusted. The power-up
default is 32.
Table 13. Output Drive Strength
Output Drive
00
01
10
11
Result
Low output drive strength
Medium low output drive strength
Medium high output drive strength
High output drive strength
0x24—Bit[7] HSYNC Output Polarity
This bit sets the polarity of the HSYNC output. Setting this bit
to 0 sets the HSYNC output to active low. Setting this bit to 1
sets the HSYNC output to active high. Power-up default setting
is 1.
0x24—Bit[6] VSYNC Output Polarity
This bit sets the polarity of the VSYNC output (both DVI and
analog). Setting this bit to 0 sets the VSYNC output to active
low. Setting this bit to 1 sets the VSYNC output to active high.
Power-up default is 1.
0x24—Bit[5] Display Enable Output Polarity
This bit sets the polarity of the display enable (DE) for both
DVI and analog. 0 = DE output polarity is negative. 1 = DE
output polarity is positive.
0x25—Bits[3:2] Output Mode
These bits choose between four options for the output mode,
one of which is exclusive to an HDMI input. 4:4:4 mode is
standard RGB; 4:2:2 mode is YCrCb, which reduces the number
of active output pins from 24 to 16; 4:4:4 is double data rate
(DDR) output mode; and the data is RGB mode that changes on
every clock edge. The power-up default setting is 00.
Table 14. Output Mode
Output Mode
00
01
10
11
Result
4:4:4 RGB mode
4:2:2 YCrCb mode + DDR 4:2:2 on blue
(secondary)
DDR 4:4:4: DDR mode + DDR 4:2:2 on blue
(secondary)
12-bit 4:2:2 (HDMI option only)
The power-up default is 1.
0x24—Bit[4] Field Output Polarity
0x25—Bit[1] Primary Output Enable
This bit sets the polarity (both DVI and analog) of the field
output signal on Pin 21. 0 = active low out. 1 = active high out.
The power-up default is 1.
This bit places the primary output in active or high impedance
mode. The primary output is designated when using either 4:2:2
or DDR 4:4:4. In these modes, the data on the red and green
output channels is the primary output, while the output data
on the blue channel (DDR YCrCb) is the secondary output.
0 = primary output is in high impedance mode. 1 = primary
output is enabled. The power-up default setting is 1.
0x24—Bit[0] Output Clock Invert
This bit allows inversion of the output clock as specified by
Register 0x25, Bits 7 to 6. 0 = noninverted clock. 1 =inverted
clock .The power-up default setting is 0.
0x25—Bits[7:6] Output Clock Select
These bits select the clock output on the DATACLK pin. They
include 1/2× clock, a 2× clock, a 90° phase shifted clock or the
normal pixel clock. The power-up default setting is 01.
Table 12. Output Clock Select
Select
00
01
10
11
Result
½× pixel clock
1× pixel clock
2× pixel clock
90° phase 1× pixel clock
0x25—Bit[0] Secondary Output Enable
This bit places the secondary output in active or high
impedance mode. The secondary output is designated when
using either 4:2:2 or DDR 4:4:4. In these modes, the data on
the blue output channel is the secondary output while the
output data on the red and green channels is the primary
output. Secondary output is always a DDR YCrCb data mode.
The power-up default setting is 0. 0 = secondary output is in
high impedance mode. 1 = secondary output is enabled.
Rev. 0 | Page 27 of 44
AD9381
0x26—Bit[7] Output Three-State
0x27—Bit[5] MCLK External Enable
When enabled, this bit puts all outputs (except SOGOUT)
in a high impedance state. 0 = normal outputs. 1 = all outputs
(except SOGOUT) in high impedance mode. The power-up
default setting is 0.
This bit enables the MCLK to be supplied externally. If an
external MCLK is used, then it must be locked to the video
clock according to the CTS and N available in the I2C. Any
mismatch between the internal MCLK and the input MCLK
results in dropped or repeated audio samples. 0 = use internally
generated MCLK. 1 = use external MCLK input. The power-up
default setting is 0.
0x26—Bit[5] S/PDIF Three-State
When enabled, this bit places the S/PDIF audio output pins in a
high impedance state. 0 = normal S/PDIF output. 1 = S/PDIF
pins in high impedance mode. The power-up default setting
is 0.
When enabled, this bit places the I2S output pins in a high
impedance state. 0 = normal I2S output. 1 = I2S pins in high
impedance mode. The power-up default setting is 0.
0x26—Bit[3] Power-Down Polarity
This bit defines the polarity of the input power-down pin.
0 = power-down pin is active low. 1 = power-down pin is active
high. The power-up default setting is 1.
0x26—Bits[2-1] Power-Down Pin Function
These bits define the different operational modes of the powerdown pin. These bits are functional only when the power-down
pin is active; when it is not active, the part is powered up and
functioning. 0 = chip is powered down and all outputs are in
high impedance mode. 1 = chip remains powered up, but all
outputs are in high impedance mode. The power-up default
setting is 00.
0x26—Bit[0] Power-Down
This bit is used to put the chip in power-down mode. In this
mode, the power dissipation is reduced to a fraction of the
typical power (see Table 1 for exact power dissipation). When in
power-down, the HSOUT, VSOUT, DATACK, and all 30 of the
data outputs are put into a high impedance state. Note that the
SOGOUT output is not put into high impedance. Circuit blocks
that continue to be active during power-down include the
voltage references, sync processing, sync detection, and the
serial register. These blocks facilitate a fast start-up from powerdown. 0 = normal operation. 1 = power-down. The power-up
default setting is 0.
0x27—Bit[7] Auto Power-Down Enable
This bit enables the chip to go into low power mode, or seek
mode if no sync inputs are detected. 0 = auto power-down
disabled. 1 = chip powers down if no sync inputs present. The
power-up default setting is 1.
This bit sets the LSB of the address of the HDCP I2C. This
should be set to 1 only for a second receiver in a dual-link
configuration. The power-up default is 0.
0x27—Bit[4] BT656 Enable
This bit enables the output to be BT656 compatible with the
defined start of active video (SAV) and the end of active video
(EAV) controls to be inserted. These require specification of the
number of active lines, active pixels per line, and delays to place
these markers. 0 = disable BT656 video mode. 1 = enable BT656
video mode. The power-up default setting is 0.
0x26—Bit[4] I2S Three-State
0x27—Bit[6] HDCP A0 Address
BT656 GENERATION
0x27—Bit[3] Force DE Generation
This bit allows the use of the internal DE generator in DVI
mode. 0 = internal DE generation disabled. 1 = force DE
generation via programmed registers. The power-up default
setting is 0.
0x27—Bits[2:0] Interlace Offset
These bits define the offset in HSYNCs from Field 0 to Field 1.
The power-up default setting is 000.
0x28—Bits[7:2] VSYNC Delay
These bits set the delay (in lines) from the leading edge of
VSYNC to active video. The power-up default setting is 24.
0x28—Bits[1:0] HSYNC Delay MSBs
Along with register 0x29, these ten bits set the delay (in pixels)
from the HSYNC leading edge to the start of active video. The
power-up default setting is 0x104.
0x29—Bits[7:0] HSYNC Delay LSBs
See the HSYNC Delay MSBs section.
0x2A—Bits[3:0] Line Width MSBs
Along with register 0x2B, these 12 bits set the width of the
active video line (in pixels). The power-up default setting is
0x500.
0x2B—Bits[7:0] Line Width LSBs
See the line width MSBs section.
0x2C—Bits[3:0] Screen Height MSBs
Along with register 0x2D, these 12 bits, set the height of the
active screen (in lines). The power-up default setting is 0x2D0.
0x2D—Bits[7:0] Screen Height LSBs
See the Screen Height MSBs section.
Rev. 0 | Page 28 of 44
AD9381
0x2E—Bit[7] Ctrl Enable
0x30—Bit[5] DVI HSYNC Polarity
When set, this bit allows Ctrl [3:0] signals decoded from the
DVI to be output on the I2S data pins. 0 = I2S signals on I2S
lines. 1 = Ctrl [3:0] output on I2S lines. The power-up default
setting is 0.
This read-only bit indicates the polarity of the DVI HSYNC.
0 = DVI HSYNC polarity is low active. 1 = DVI HSYNC
polarity is high active.
0x30—Bit[4] DVI VSYNC Polarity
0x2E—Bits[6:5] I2S Output Mode
This read-only bit indicates the polarity of the DVI VSYNC.
0 = DVI VSYNC polarity is low active. 1 = DVI VSYNC polarity
is high active.
These bits select between four options for the I2S output: I2S,
right-justified, left-justified, or raw IEC60958 mode. The
power-up default setting is 00.
0x30—Bits[3:0] HDMI Pixel Repetition
Table 15. I2S Output Select
I2S Output Mode
00
01
10
11
These read-only bits indicate the pixel repetition on DVI. 0 =
1×, 1 = 2×, 2 = 3×, up to a maximum repetition of 10× (0x9).
Result
I2S mode
Right-justified
Left-justified
Raw IEC60958 mode
Table 16.
Select
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
0x2E—Bits[4:0] I2S Bit Width
These bits set the I2S bit width for right-justified mode. The
power-up default setting is 24 bits.
0x2F—Bit[6] TMDS Sync Detect
This read-only bit indicates the presence of a TMDS DE.
0 = no TMDS DE present. 1 = TMDS DE detected.
Repetition Multiplier
1×
2×
3×
4×
5×
6×
7×
8×
9×
10×
0x2F—Bit[5] TMDS Active
This read-only bit indicates the presence of a TMDS clock.
0 = no TMDS clock present. 1 = TMDS clock detected.
MACROVISION®
0x2F—Bit[4] AV Mute
These bits set the pseudo sync pulse width maximum for
Macrovision detection in pixel clocks. This is functional for
13.5 MHz SDTV or 27 MHz progressive scan. Power-up
default is 9.
0x31—Bits[7:4] Macrovision Pulse Max
This read-only bit indicates the presence of AV mute based on
general control packets. 0 = AV not muted. 1 = AV muted.
0x2F—Bit[3] HDCP Keys Read
0x31—Bits[3:0] Macrovision Pulse Min
This read-only bit reports if the HDCP keys were read
successfully. 0 = failure to read HDCP keys. 1 = HDCP keys
read.
These bits set the pseudo sync pulse width maximum for
Macrovision detection in pixel clocks. This is functional for
13.5 MHz SDTV or 27 MHz progressive scan. Power-up
default is 6.
0x2F—Bits[2:0] HDMI Quality
These read-only bits indicate a level of HDMI quality based on
the DE (display enable) edges. A larger number indicates a
higher quality.
0x30—Bit[6] HDMI Content Encrypted
This read-only bit is high when HDCP decryption is in use
(content is protected). The signal goes low when HDCP is not
being used. Customers can use this bit to determine whether or
not to allow copying of the content. The bit should be sampled
at regular intervals since it can change on a frame by frame
basis. 0 = HDCP not in use. 1 = HDCP decryption in use.
0x32—Bit[7] Macrovision Oversample Enable
Tells the Macrovision detection engine whether oversampling is
used. This accommodates 27 MHz sampling for SDTV and 54
MHz sampling for progressive scan and is used as a correction
factor for clock counts. Power-up default is 0.
0x32—Bit[6] Macrovision PAL Enable
Tells the Macrovision detection engine to enter PAL mode when
set to 1. Default is 0 for NTSC mode.
0x32—Bits[5:0] Macrovision Line Count Start
Set the start line for Macrovision detection. Along with
Register 0x33, Bits [5:0], they define the region where MV
pulses are expected to occur. The power-up default is Line 13.
Rev. 0 | Page 29 of 44
AD9381
0x33—Bit[7] Macrovision Detect Mode
0x35—Bits[6:5] Color Space Converter Mode
0 = standard definition. 1 = progressive scan mode.
These two bits set the fixed point position of the CSC
coefficients, including the A4, B4, and C4 offsets.
0x33—Bit[6] Macrovision Settings Override
This defines whether preset values are used for the MV line
counts and pulse widths or the values stored in I2C registers.
0 = use hard-coded settings for line counts and pulse widths.
1 = use I2C values for these settings.
0x33—Bits[5:0] Macrovision Line Count End
Set the end line for Macrovision detection. Along with
Register 0x32, Bits [5:0], they define the region where MV
pulses are expected to occur. The power-up default is Line 21.
0x34—Bits[7:6] Macrovision Pulse Limit Select
Set the number of pulses required in the last three lines (SD
mode only). If there is not at least this number of MV pulses,
the engine stops. These 2 bits define these pulse counts:
00 = 6
01 = 4
10 = 5 (default)
11 = 7
Table 17. CSC Fixed Point Converter Mode
Select
00
01
1×
Result
±1.0, −4096 to +4095
±2.0, −8192 to +8190
±4.0, −16384 to +16380
0x35—Bits[4:0] Color Space Conversion Coefficient A1
MSBs
These 5 bits form the 5 MSBs of the Color Space Conversion
Coefficient A1. This, combined with the 8 LSBs of the following
register, form a 13-bit, twos complement coefficient which is
user programmable. The equation takes the form of:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
The default value for the 13-bit, A1 coefficient is 0x0C52.
0x34—Bit[5] Low Frequency Mode
0x36—Bits[7:0] Color Space Conversion Coefficient A1
LSBs
Sets the audio PLL to low frequency mode. Low frequency
mode should only be set for pixel clocks < 80 MHz.
See the Register 0x35 section.
0x37—Bits[4:0] CSC A2 MSBs
0x34—Bit[4] Low Frequency Override
Allows the previous bit to be used to set low frequency mode
rather than the internal auto-detect.
0x34—Bit[3] Up Conversion Mode
These five bits form the 5 MSBs of the Color Space Conversion
Coefficient A2. Combined with the 8 LSBs of the following
register, they form a 13-bit, twos complement coefficient that is
user programmable. The equation takes the form of:
ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4
GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4
BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4
0 = repeat Cb/Cr values. 1 = interpolate Cb/Cr values.
0x34—Bit[2] CbCr Filter Enable
Enables the FIR filter for 4:2:2 CbCr output.
The default value for the 13-bit, A2 coefficient is 0x0800.
COLOR SPACE CONVERSION
0x38—Bits[7:0] CSC A2 LSBs
The default power-up values for the color space converter
coefficients (R0x35 through R0x4C) are set for ATSC RGB-toYCbCr conversion. They are completely programmable for
other conversions.
0x34—Bit[1] Color Space Converter Enable
This bit enables the color space converter. 0 = disable color
space converter. 1 = enable color space converter. The power-up
default setting is 0.
See the Register 0x37 section.
0x39—Bits[4:0] CSC A3 MSBs
The default value for the 13-bit A3 is 0x0000.
0x3A—Bits[7:0] CSC A3 LSBs
0x3B—Bits[4:0] CSC A4 MSBs
The default value for the 13-bit A4 is 0x19D7.
0x3C—Bits[7:0] CSC A4 LSBs
0x3D—Bits[4:0] CSC B1 MSBs
The default value for the 13-bit B1 is 0x1C54.
0x3E—Bits[7:0] CSC B1 LSBs
0x3F—Bits[4:0] CSC B2 MSB
The default value for the 13-bit B2 is 0x0800.
Rev. 0 | Page 30 of 44
AD9381
0x40—Bits[7:0] CSC B2 LSBs
0x41—Bits[4-0] CSC B3 MSBs
0x58—Bits[2:0] MCLK fS_N
These bits control the multiple of 128 fS used for MCLK out.
The default value for the 13-bit B3 is 0x1E89.
Table 19.
MCLK fS_N [2:0]
0
1
2
3
4
5
6
7
0x42—Bits[7:0] CSC B3 LSBs
0x43—Bits[4-0] CSC B4 MSBs
The default value for the 13-bit B4 is 0x0291.
0x44—Bits[7:0] CSC B4 LSBs
0x45—Bits[4-0] CSC C1 MSBs
The default value for the 13-bit C1 is 0x0000.
0x46—Bits[7:0] CSC C1 LSBs
0x47—Bits[4-0] CSC C2 MSBs
fS Multiple
128
256
384
512
640
768
896
1024
0x59—Bit[6] MDA/MCL PU Disable
The default value for the 13-bit C2 is 0x0800.
This bit disables the inter-MDA/MCL pull-ups.
0x48—Bits[7:0] CSC C2 LSBs
0x49—Bits[4:0] CSC C3 MSBs
0x59—Bit[5] CLK Term O/R
This bit allows for overriding during power down.
0 = auto, 1 = manual.
The default value for the 13-bit C3 is 0x0E87.
0x4A—Bits[7:0] CSC C3 LSBs
0x4B—Bits[4:0] CSC C4 MSBs
0x59—Bit[4] Manual CLK Term
This bit allows normal clock termination or disconnects this.
0 = normal, 1 = disconnected.
The default value for the 13-bit C4 is 0x18BD.
0x4C—Bits[7:0] CSC C4 LSBs
0x57—Bit[7] AV Mute Override
0x57—Bit[6] AV Mute Value
0x57—Bit[3] Disable AV Mute
0x57—Bit[2] Disable Audio Mute
0x58—Bit[7] MCLK PLL Enable
0x59—Bit[2] FIFO Reset UF
This bit resets the audio FIFO if underflow is detected.
0x59—Bit[1] FIFO Reset OF
This bit resets the audio FIFO if overflow is detected.
0x59—Bit[0] MDA/MCL Three-State
This bit enables the use of the analog PLL.
0x58—Bits[6:4] MCLK PLL_N
This bit three-states the MDA/MCL lines to allow in-circuit
programming of the EEPROM.
These bits control the division of the MCLK out of the PLL.
0x5A—Bits[6:0] Packet Detect
Table 18.
This register indicates if a data packet in specific sections has
been detected. These seven bits are updated if any specific
packet has been received since last reset or loss of clock detect.
Normal is 0x00.
PLL_N [2:0]
0
1
2
3
4
5
6
7
MCLK Divide Value
/1
/2
/3
/4
/5
/6
/7
/8
Table 20.
0x58—Bit[3] N_CTS_Disable
This bit makes it possible to prevent the N/CTS packet on the
link from writing to the N and CTS registers.
Packet Detect Bit
0
1
2
3
4
5
6
0x5B—Bit[3] HDMI Mode
0 = DVI, 1 = HDMI.
Rev. 0 | Page 31 of 44
Packet Detected
AVI infoframe
Audio infoframe
SPD infoframe
MPEG source infoframe
ACP packets
ISRC1 packets
ISRC2 packets
AD9381
0x5E—Bits[7:6] Channel Status Mode
0x5E—Bits[5:3] PCM Audio Data
0x5E—Bit[2] Copyright Information
0x5E—Bit[1] Linear PCM Identification
0x5E—Bit[0] Use of Channel Status Block
0x5F—Bits[7:0] Channel Status Category Code
0x60—Bits[7:4] Channel Number
0x60—Bits[3:0] Source Number
0x61—Bits[5:4] Clock Accuracy
0x61—Bits[3:0] Sampling Frequency
0x81—Bits[1:0] Scan Information
Table 24.
S [1:0]
00
01
10
0x82—Bits[7:6] Colorimetry
Table 25.
C [1:0]
00
01
10
Table 21.
Code
0x0
0x2
0x3
0x8
0xA
0xC
0xE
Frequency (kHz)
44.1
48
32
88.2
96
176.4
192
Table 26.
M[1:0]
00
01
10
Table 27.
0x7C—Bits[7:0]CTS (11:4)
0x7D—Bits[7:4] CTS (3:0)
0x7D—Bits[3:0] N (19:16)
These are the most significant 4 bits of a 20-bit word used along
with the 20-bit CTS term to regenerate the audio clock.
Table 22.
Y
00
01
10
Video Data
RGB
YCbCr 4:2:2
YCbCr 4:4:4
Aspect Ratio
No data
4:3
16:9
0x82—Bits[3:0] Active Format Aspect Ratio
These are the most significant 8 bits of a 20-bit word used in the
20-bit N term in the regeneration of the audio clock.
This register indicates whether data is RGB, 4:4:4, or 4:2:2.
Colorimetry
No data
SMPTE 170M, ITU601
ITU 709
0x82—Bits[5:4] Picture Aspect Ratio
0x62—Bits[3-0] Word Length
0x7B—Bits[7:0] CTS (Cycle Time Stamp) (19:12)
0x80 AVI Infoframe Version
0x81—Bits[6:5] Y [1:0]
Scan Type
No information
Overscanned (television)
Underscanned (computer)
R [3:0]
0x8
0x9
0xA
0xB
Active Format A/R
Same as picture aspect ratio (M [1:0])
4:3 (center)
16:9 (center)
14:9 (center)
0x83—Bits[1:0] Nonuniform Picture Scaling
Table 28.
SC [1:0]
00
01
10
11
Picture Scaling
No known nonuniform scaling
Has been scaled horizontally
Has been scaled vertically
Has been scaled both horizontally and vertically
0x84—Bits[6:0] Video ID Code
See CEA EDID short video descriptors.
0x85—Bits[3:0] Pixel Repeat
0 = no data. 1 = active format information valid.
This value indicates how many times the pixel was repeated.
0x0 = no repeats, sent once; 0x8 = 8 repeats, sent 9 times; and
so on.
0x81—Bits[3:2] Bar Information
0x86—Bits[7:0] Active Line Start LSB
0x81—Bit[4] Active Format Information Present
Table 23.
B
00
01
10
11
Bar Type
No bar information
Horizontal bar information valid
Vertical bar information valid
Horizontal and vertical bar information valid
Combined with the MSB in Register 0x88, these bits indicate
the beginning line of active video. All lines before this comprise
a top horizontal bar. This is used in letter box modes. If the 2byte value is 0x00, there is no horizontal bar.
Rev. 0 | Page 32 of 44
AD9381
0x87—Bits[6:0] New Data Flags (NDF)
0x91—Bits[7:4] Audio Coding Type
This register indicates whether data in specific sections has
changed. In the address space from 0x80 to 0xFF, each register
address ending in 0b111 (for example, 0x87, 0x8F, 0x97, 0xAF)
is an NDF register. They all have the same data and all are reset
upon reading any one of them.
These bits identify the audio coding so that the receiver may
process audio properly.
Table 29.
NDF Bit number
0
1
2
3
4
5
6
Changes Occurred
AVI infoframe
Audio infoframe
SPD infoframe
MPEG source infoframe
ACP packets
ISRC1 packets
ISRC2 packets
Table 30.
CT [3:0]
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
Audio Coding
Refer to stream header
IEC60958 PCM
AC-3
MPEG1 (Layer 1 and Layer 2)
MP3 (MPEG1 Layer 3)
MPEG2 (multichannel)
AAC
DTS
ATRAC
0x91—Bits[2:0] Audio Channel Count
0x88—Bits[7:0] Active Line Start MSB
See Register 0x86.
These bits specify how many audio channels are being sent—
2 channels to 8 channels.
0x89—Bits[7:0] Active Line End LSB
Table 31.
Combined with the MSB in Register 0x8A, these bits indicate
the last line of active video. All lines past this comprise a lower
horizontal bar. This is used in letter-box modes. If the 2-byte
value is greater than the number of lines in the display, there is
no lower horizontal bar.
CC [2:0]
000
001
010
011
100
101
110
111
0x8A—Bits[7:0] Active Line End MSB
See Register 0x89.
0x8B—Bits[7:0] Active Pixel Start LSB
Combined with the MSB in Register 0x8C, these bits indicate
the first pixel in the display that is active video. All pixels before
this comprise a left vertical bar. If the 2-byte value is 0x00, there
is no left bar.
Channel Count
Refer to stream header
2
3
4
5
6
7
8
0x92—Bits[4:2] Sampling Frequency
0x92—Bits[1:0] Ample Size
0x93—Bits[7:0] Max Bit Rate
See Register 0x8B.
For compressed audio only, when this value is multiplied by
8 kHz represents the maximum bit rate. A value of 0x08 in this
field yields a maximum bit rate of (8 kHz × 8 kHz = 64 kHz).
0x8D—Bits[7:0] Active Pixel End LSB
0x94—Bits[7:0] Speaker Mapping
Combined with the MSB in Register 0x8E, these bits indicate
the last active video pixel in the display. All pixels past this
comprise a right vertical bar. If the 2-byte value is greater than
the number of pixels in the display, there is no vertical bar.
These bits define the suggested placement of speakers.
0x8C—Bits[7:0] Active Pixel Start MSB
0x8E—Bits[7:0] Active Pixel End MSB
See Register 0x8D.
0x8F—Bits[6:0] NDF
See Register 0x87.
0x90—Bits[7:0] Audio Infoframe Version
Table 32.
Abbreviation
FL
FC
FR
FCL
FCR
RL
RC
RR
RCL
RCR
LFE
Rev. 0 | Page 33 of 44
Speaker Placement
Front left
Front center
Front right
Front center left
Front center right
Rear left
Rear center
Rear right
Rear center left
Rear center right
Low frequency effect
AD9381
Table 33.
Bit 4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
CA
Bit 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Bit 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Bit 8
–
–
–
–
–
RRC
RRC
RRC
RRC
FRC
FRC
FRC
FRC
FRC
FRC
FRC
FRC
FRC
FRC
FRC
FRC
Bit 7
Bit 6
–
RC
RC
RC
RC
RLC
RLC
RLC
RLC
FLC
FLC
FLC
FLC
FLC
FLC
FLC
FLC
FLC
FLC
FLC
FLC
RR
RR
RR
RR
RR
RR
RR
RR
RR
RR
RR
RR
–
–
–
–
–
–
–
–
RR
RR
RR
RR
0x95—Bit[7] Down-Mix Inhibit
0x95—Bits[6:3] Level Shift Values
These bits define the amount of attenuation. The value directly
corresponds to the amount of attenuation: for example, 0000 =
0 dB, 0001 = 1 dB to 1111 = 15 dB attenuation.
0x96—Bits[7:0] Reserved
0x97—Bits[6:0] New Data Flags
Channel Number
Bit 5
Bit 4
–
–
FC
FC
RC
–
RC
–
RC
FC
RC
FC
RL
–
RL
–
RL
FC
RL
FC
RL
–
RL
–
RL
FC
RL
FC
RL
–
RL
–
RL
FC
RL
FC
–
–
–
v
–
FC
–
FC
RC
–
RC
–
RC
FC
RC
FC
RL
–
RL
–
RL
FC
RL
FC
Bit 3
–
LFE
–
LFE
–
LFE
–
LFE
–
LFE
–
LFE
–
LFE
–
LFE
–
LFE
–
LFE
v
LFE
–
LFE
–
LFE
–
LFE
v
LFE
–
LFE
Bit 2
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
FR
Bit 1
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
0x9A—Bits[7:0] VN2
0x9B—Bits[7:0] VN3
0x9C—Bits[7:0] VN4
0x9D—Bits[7:0] VN5
0x9E—Bits[7:0] VN6
0x9F—Bits[6:0] New Data Flags
See Register 0x87 for a description.
See Register 0x87 for a description.
0xA0—Bits[7:0] VN7
0xA1—Bits[7:0] VN8
0xA2—Bits[7:0] Product Description Character 1 (PD1)
0x98—Bits[7:0] Source Product Description (SPD)
Infoframe Version
0x99—Bits[7:0] Vender Name Character 1 (VN1)
This is the first character in eight that is the name of the
company that appears on the product. The data characters are
7-bit ASCII code.
This is the first character of 16 that contains the model number
and a short description of the product. The data characters are
7-bit ASCII code.
Rev. 0 | Page 34 of 44
AD9381
0xA3—Bits[7:0] PD2
0xA4—Bits[7:0] PD3
0xA5—Bits[7:0] PD4
0xA6—Bits[7:0] PD5
0xA7—Bits[6:0] New Data Flags
See Register 0x87 for a description.
0xA8—Bits[7:0] PD6
0xA9—Bits[7:0] PD7
0xAA—Bits[7:0] PD8
0xAB—Bits[7:0] PD9
0xAC—Bits[7:0] PD10
0xAD—Bits[7:0] PD11
0xAE—Bits[7:0] PD12
0xAF—Bits[6:0] New Data Flags
See Register 0x87 for a description.
0xB0—Bits[7:0] PD13
0xB1—Bits[7:0] PD14
0xB2—Bits[7:0] PD15
0xB3—Bits[7:0] PD16
0xB4—Bits[7:0] Source Device Information Code
These bytes classify the source device.
Table 34.
SDI Code
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
Source
Unknown
Digital STB
DVD
D-VHS
HDD video
DVC
DSC
Video CD
Game
PC general
0xB7—Bits[6:0] New Data Flags
0xBD—Bit[4] Field Repeat
This defines whether the field is new or repeated. 0 = new field
or picture. 1 = repeated field.
0xBD—Bits[1:0] MPEG Frame
This identifies the frame as I, B, or P.
Table 35.
MF [1-0]
00
01
10
11
Frame Type
Unknown
I—picture
B—picture
P—picture
0xBE—Bits[7:0] Reserved
0xBF—Bits[6:0] New Data Flags
See Register 0x87 for a description.
0xC0—Bits[7:0] Audio Content Protection Packet (ACP Type)
These bits define which audio content protection is used.
Table 36.
Code
0x00
0x01
0x02
0x03
0x04—0xFF
ACP Type
Generic audio
IEC 60958-identified audio
DVD-audio
Reserved for super audio CD (SACD)
Reserved
0xC1—ACP Packet Byte 0 (ACP_PB0)
0xC2—Bits[7:0] ACP_PB1
0xC3—Bits[7:0] ACP_PB2
0xC4—Bits[7:0] ACP_PB3
0xC5—Bits[7:0] ACP_PB4
0xC7—Bits[6:0] New Data Flags
See Register 0x87 for a description.
0xC8—Bit[7] International Standard Recording Code
(ISRC1) Continued
See Register 0x87 for a description.
This bit indicates that a continuation of the 16 ISRC1 packet
bytes (an ISRC2 packet) is being transmitted.
0xB8—Bits[7:0] MPEG Source Infoframe Version
0xB9—Bits[7:0] MPEG Bit Rate Byte 0 (MB0)
0xC8—Bit[6] ISRC1 Valid
The lower 8 of 32 bits that specify the MPEG bit rate in Hz.
0xBA—Bits[7:0] MB1
0xBB—Bits[7:0] MB2
0xBC—Bits[7:0] MB3—Upper Byte
This bit is an indication of the whether ISRC1 packet bytes are
valid. 0 = ISRC1 status bits and PBs not valid. 1 = ISRC1 status
bits and PBs valid.
0xC8—Bits[2:0] ISRC Status
These bits define where in the ISRC track the samples are: at
least two transmissions of 001 occur at the beginning of the
track, while continuous transmission of 010 occurs in the
middle of the track, followed by at least two transmissions of
100 near the end of the track.
Rev. 0 | Page 35 of 44
AD9381
0xC9—Bits[7:0] ISRC1 Packet Byte 0 (ISRC1_PB0)
0xCA—Bits[7:0] ISRC1_PB1
0xCB—Bits[7:0] ISRC1_PB2
0xCC—Bits[7:0] ISRC1_PB3
0xCD—Bits[7:0] ISRC1_PB4
0xCE—Bits[7:0] ISRC1_PB5
0xCF—Bits[6:0] New Data Flags
0xDD—Bits[7:0] ISRC2_PB1
0xDE—Bits[7:0] ISRC2_PB2
0xDF—Bits[6-0] New Data Flags
See Register 0x87 for a description.
0xE0—Bits[7:0] ISRC2_PB3
0xE1—Bits[7:0] ISRC2_PB4
0xE2—Bits[7:0] ISRC2_PB5
0xE3—Bits[7:0] ISRC2_PB6
0xE4—Bits[7:0] ISRC2_PB7
0xE5—Bits[7:0] ISRC2_PB8
0xE6—Bits[7:0] ISRC2_PB9
0xE7—Bits[6:0] New Data Flags
See Register 0x87 for a description.
0xD0—Bits[7:0] ISRC1_PB6
0xD1—Bits[7:0] ISRC1_PB7
0xD2—Bits[7:0] ISRC1_PB8
0xD3—Bits[7:0] ISRC1_PB9
0xD4—Bits[7:0] ISRC1_PB10
0xD5—Bits[7:0] ISRC1_PB11
0xD6—Bits[7:0] ISRC1_PB12
0xD7—Bits[6:0] New Data Flags
See Register 0x87 for a description.
0xE8—Bits[7:0] ISRC2_PB10
0xE9—Bits[7:0] ISRC2_PB11
0xEA—Bits[7:0] ISRC2_PB12
0xEB—Bits[7:0] ISRC2_PB13
0xEC—Bits[7:0] ISRC2_PB14
0xED—Bits[7:0] ISRC2_PB15
0xEE—Bits[7:0] ISRC2_PB16
See Register 0x87 for a description.
0xD8—Bits[7:0] ISRC1_PB13
0xD9—Bits[7:0] ISRC1_PB14
0xDA—Bits[7:0] ISRC1_PB15
0xDB—Bits[7:0] ISRC1_PB16
0xDC—Bits[7:0] ISRC2 Packet Byte 0 (ISRC2_PB0)
This is transmitted only when the ISRC continue bit (Register
0xC8 Bit 7) is set to 1.
Rev. 0 | Page 36 of 44
AD9381
2-WIRE SERIAL CONTROL PORT
A 2-wire serial interface control is provided in the AD9381. Up
to two AD9381 devices can be connected to the 2-wire serial
interface, with a unique address for each device.
The 2-wire serial interface comprises a clock (SCL) and a
bidirectional data (SDA) pin. The analog flat panel interface
acts as a slave for receiving and transmitting data over the serial
interface. When the serial interface is not active, the logic levels
on SCL and SDA are pulled high by external pull-up resistors.
Data received or transmitted on the SDA line must be stable for
the duration of the positive-going SCL pulse. Data on SDA must
change only when SCL is low. If SDA changes state while SCL is
high, the serial interface interprets that action as a start or stop
sequence.
There are six components to serial bus operation:
DATA TRANSFER VIA SERIAL INTERFACE
For each byte of data read or written, the MSB is the first bit of
the sequence. If the AD9381 does not acknowledge the master
device during a write sequence, the SDA remains high so the
master can generate a stop signal. If the master device does not
acknowledge the AD9381 during a read sequence, the AD9381
interprets this as the end of data. The SDA remains high so the
master can generate a stop signal.
To write data to specific control registers of the AD9381, the 8bit address of the control register of interest must be written
after the slave address has been established. This control register
address is the base address for subsequent write operations. The
base address auto-increments by 1 for each byte of data written
after the data byte intended for the base address. If more bytes
are transferred than there are available addresses, the address
does not increment and remains at its maximum value. Any
base address higher than the maximum value does not produce
an acknowledge signal.
•
Start signal
•
Slave address byte
•
Base register address byte
•
Data byte to read or write
•
Stop signal
Data are read from the control registers of the AD9381 in a
similar manner. Reading requires two data transfer operations:
•
Acknowledge (Ack)
•
The base address must be written with the R/W bit of the
slave address byte low to set up a sequential read
operation.
•
Reading (the R/W bit of the slave address byte high) begins
at the previously established base address. The address of
the read register auto-increments after each byte is
transferred.
When the serial interface is inactive (SCL and SDA are high),
communications are initiated by sending a start signal. The start
signal is a high-to-low transition on SDA while SCL is high.
This signal alerts all slave devices that a data transfer sequence
is coming.
The first 8 bits of data transferred after a start signal comprise a
7-bit slave address (the first 7 bits) and a single R/W bit (the 8th
bit). The R/W bit indicates the direction of data transfer, read
from (1) or write to (0) the slave device. If the transmitted slave
address matches the address of the device (set by the state of the
SA0 input pin as shown in Table 37), the AD9381 acknowledges
by bringing SDA low on the 9th SCL pulse. If the addresses do
not match, the AD9381 does not acknowledge.
Table 37. Serial Port Addresses
Bit 6
A5
0
Bit 5
A4
0
Bit 4
A3
1
Bit 3
A2
1
Bit 2
A1
0
Bit 1
A0
0
A repeated start signal occurs when the master device driving
the serial interface generates a start signal without first generating a stop signal to terminate the current communication. This
is used to change the mode of communication (read, write)
between the slave and master without releasing the serial
interface lines.
SDA
tBUFF
tSTAH
tDSU
tDHO
tSTASU
tSTOSU
tDAL
SCL
05689-008
Bit 7
A6 (MSB)
1
To terminate a read/write sequence to the AD9381, a stop signal
must be sent. A stop signal comprises a low-to-high transition
of SDA while SCL is high.
tDAH
Figure 9. Serial Port Read/Write Timing
Rev. 0 | Page 37 of 44
AD9381
SERIAL INTERFACE READ/WRITE EXAMPLES
Write to one control register:
Read from one control register:
•
Start signal
•
Start signal
•
Slave address byte (R/W bit = low)
•
Slave address byte (R/W bit = low)
•
Base address byte
•
Base address byte
•
Data byte to base address
•
Start signal
•
Stop signal
•
Slave address byte (R/W bit = high)
Write to four consecutive control registers:
•
Data byte from base address
•
Start signal
•
Stop signal
•
Slave address byte (R/W bit = low)
Read from four consecutive control registers:
•
Base address byte
•
Start signal
•
Data byte to base address
•
Slave address byte (R/W bit = low)
•
Data byte to (base address + 1)
•
Base address byte
•
Data byte to (base address + 2)
•
Start signal
•
Data byte to (base address + 3)
•
Slave address byte (R/W bit = high)
•
Stop signal
•
Data byte from base address
•
Data byte from (base address + 1)
•
Data byte from (base address + 2)
•
Data byte from (base address + 3)
•
Stop signal
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
ACK
05689-009
SDA
SCL
Figure 10. Serial Interface—Typical Byte Transfer
Rev. 0 | Page 38 of 44
AD9381
PCB LAYOUT RECOMMENDATIONS
The AD9381 is a high precision, high speed digital device. To
achieve the maximum performance from the part, it is important to have a well laid-out board. The following is a guide for
designing a board using the AD9381.
POWER SUPPLY BYPASSING
It is recommended to bypass each power supply pin with a
0.1 μF capacitor. The exception is in the case where two or more
supply pins are adjacent to each other. For these groupings of
powers/grounds, it is only necessary to have one bypass
capacitor. The fundamental idea is to have a bypass capacitor
within about 0.5 cm of each power pin. Also, avoid placing the
capacitor on the opposite side of the PC board from the
AD9381, because that interposes resistive vias in the path.
The bypass capacitors should be physically located between the
power plane and the power pin. Current should flow from the
power plane to the capacitor to the power pin. Do not make the
power connection between the capacitor and the power pin.
Placing a via underneath the capacitor pads down to the power
plane is generally the best approach.
It is particularly important to maintain low noise and good
stability of PVDD (the clock generator supply). Abrupt changes
in PVDD can result in similarly abrupt changes in sampling clock
phase and frequency. This can be avoided by careful attention to
regulation, filtering, and bypassing. It is highly desirable to
provide separate regulated supplies for each of the analog
circuitry groups (VD and PVDD).
Some graphic controllers use substantially different levels of
power when active (during active picture time) and when idle
(during HSYNC and VSYNC periods). This can result in a
measurable change in the voltage supplied to the analog supply
regulator, which can in turn produce changes in the regulated
analog supply voltage. This can be mitigated by regulating the
analog supply, or at least PVDD, from a different, cleaner power
source (for example, from a 12 V supply).
In some cases, using separate ground planes is unavoidable, so
it is recommend to place a single ground plane under the
AD9381. The location of the split should be at the receiver of
the digital outputs. In this case, it is even more important to
place components wisely because the current loops are much
longer, (current takes the path of least resistance). An example
of a current loop is power plane to AD9381 to digital output
trace to digital data receiver to digital ground plane to analog
ground plane.
OUTPUTS (BOTH DATA AND CLOCKS)
Try to minimize the trace length that the digital outputs have to
drive. Longer traces have higher capacitance, which require
more current that causes more internal digital noise.
Shorter traces reduce the possibility of reflections.
Adding a series resistor of value 50 Ω to 200 Ω can suppress
reflections, reduce EMI, and reduce the current spikes inside
the AD9381. If series resistors are used, place them as close as
possible to the AD9381 pins (although try not to add vias or
extra length to the output trace to move the resistors closer).
If possible, limit the capacitance that each of the digital outputs
drives to less than 10 pF. This can be accomplished easily by
keeping traces short and by connecting the outputs to only one
device. Loading the outputs with excessive capacitance increases
the current transients inside of the AD9381 and creates more
digital noise on its power supplies.
DIGITAL INPUTS
The digital inputs on the AD9381 were designed to work with
3.3 V signals, but are tolerant of 5.0 V signals. Therefore, no
extra components need to be added if using 5.0 V logic.
Any noise that enters the HSYNC input trace can add jitter to
the system. Therefore, minimize the trace length and do not run
any digital or other high frequency traces near it.
It is recommended to use a single ground plane for the entire
board. Experience has shown repeatedly that the noise performance is the same or better with a single ground plane. Using
multiple ground planes can be detrimental because each
separate ground plane is smaller and long ground loops can
result.
Rev. 0 | Page 39 of 44
AD9381
COLOR SPACE CONVERTER (CSC) COMMON SETTINGS
Table 38. HDTV YCrCb (0 to 255) to RGB (0 to 255) (Default Setting for AD9381)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x0C
0x3D
0x1C
0x45
0x00
Red/Cr Coeff 1
0x36
0x52
Green/Y Coeff 1
0x3E
0x54
Blue/Cb Coeff 1
0x46
0x00
0x37
0x08
0x3F
0x08
0x47
0x08
Red/Cr Coeff 2
0x38
0x00
Green/Y Coeff 2
0x40
0x00
Blue/Cb Coeff 2
0x48
0x00
0x39
0x00
0x41
0x3E
0x49
0x0E
Red/Cr Coeff 3
0x3A
0x00
Green/Y Coeff 3
0x42
0x89
Blue/Cb Coeff 3
0x4A
0x87
0x3B
0x19
0x43
0x02
0x4B
0x18
Red/Cr Offset
0x3C
0xD7
Green/Y Offset
0x44
0x91
Blue/Cb Offset
0x4C
0xBD
Table 39. HDTV YCrCb (16 to 235) to RGB (0 to 255)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x47
0x3D
0x1D
0x45
0x00
Red/Cr Coeff 1
0x36
0x2C
Green/Y Coeff 1
0x3E
0xDD
Blue/Cb Coeff 1
0x46
0x00
0x37
0x04
0x3F
0x04
0x47
0x04
Red/Cr Coeff 2
0x38
0xA8
Green/Y Coeff 2
0x40
0xA8
Blue/Cb Coeff 2
0x48
0xA8
0x39
0x00
0x41
0x1F
0x49
0x08
Red/Cr Coeff 3
0x3A
0x00
Green/Y Coeff 3
0x42
0x26
Blue/Cb Coeff 3
0x4A
0x75
0x3B
0x1C
0x43
0x01
0x4B
0x1B
Red/Cr Offset
0x3C
0x1F
Green/Y Offset
0x44
0x34
Blue/Cb Offset
0x4C
0x7B
Table 40. SDTV YCrCb (0 to 255) to RGB (0 to 255)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x2A
0x3D
0x1A
0x45
0x00
Red/Cr Coeff 1
0x36
0xF8
Green/Y Coeff 1
0x3E
0x6A
Blue/Cb Coeff 1
0x46
0x00
0x37
0x08
0x3F
0x08
0x47
0x08
Red/Cr Coeff 2
0x38
0x00
Green/Y Coeff 2
0x40
0x00
Blue/Cb Coeff 2
0x48
0x00
0x39
0x00
0x41
0x1D
0x49
0x0D
Red/Cr Coeff 3
0x3A
0x00
Green/Y Coeff 3
0x42
0x50
Blue/Cb Coeff 3
0x4A
0xDB
0x3B
0x1A
0x43
0x04
0x4B
0x19
Red/Cr Offset
0x3C
0x84
Green/Y Offset
0x44
0x23
Blue/Cb Offset
0x4C
0x12
Table 41. SDTV YCrCb (16 to 235) to RGB (0 to 255)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x46
0x3D
0x1C
0x45
0x00
Red/Cr Coeff 1
0x36
0x63
Green/Y Coeff 1
0x3E
0xC0
Blue/Cb Coeff 1
0x46
0x00
0x37
0x04
0x3F
0x04
0x47
0x04
Red/Cr Coeff 2
0x38
0xA8
Green/Y Coeff 2
0x40
0xA8
Blue/Cb Coeff 2
0x48
0xA8
Rev. 0 | Page 40 of 44
0x39
0x00
0x41
0x1E
0x49
0x08
Red/Cr Coeff 3
0x3A
0x00
Green/Y Coeff 3
0x42
0x6F
Blue/Cb Coeff 3
0x4A
0x11
0x3B
0x1C
0x43
0x02
0x4B
0x1B
Red/Cr Offset
0x3C
0x84
Green/Y Offset
0x44
0x1E
Blue/Cb Offset
0x4C
0xAD
AD9381
Table 42. RGB (0 to 255) to HDTV YCrCb (0 to 255)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x08
0x3D
0x03
0x45
0x1E
Red/Cr Coeff 1
0x36
0x2D
Green/Y Coeff 1
0x3E
0x68
Blue/Cb Coeff 1
0x46
0x21
0x37
0x18
0x3F
0x0B
0x47
0x19
Red/Cr Coeff 2
0x38
0x93
Green/Y Coeff 2
0x40
0x71
Blue/Cb Coeff 2
0x48
0xB2
0x39
0x1F
0x41
0x01
0x49
0x08
Red/Cr Coeff 3
0x3A
0x3F
Green/Y Coeff 3
0x42
0x27
Blue/Cb Coeff 3
0x4A
0x2D
0x3B
0x08
0x43
0x00
0x4B
0x08
Red/Cr Offset
0x3C
0x00
Green/Y Offset
0x44
0x00
Blue/Cb Offset
0x4C
0x00
Table 43. RGB (0 to 255) to HDTV YCrCb (16 to 235)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x07
0x3D
0x02
0x45
0x1E
Red/Cr Coeff 1
0x36
0x06
Green/Y Coeff 1
0x3E
0xED
Blue/Cb Coeff 1
0x46
0x64
0x37
0x19
0x3F
0x09
0x47
0x1A
Red/Cr Coeff 2
0x38
0xA0
Green/Y Coeff 2
0x40
0xD3
Blue/Cb Coeff 2
0x48
0x96
0x39
0x1F
0x41
0x00
0x49
0x07
Red/Cr Coeff 3
0x3A
0x5B
Green/Y Coeff 3
0x42
0xFD
Blue/Cb Coeff 3
0x4A
0x06
0x3B
0x08
0x43
0x01
0x4B
0x08
Red/Cr Offset
0x3C
0x00
Green/Y Offset
0x44
0x00
Blue/Cb Offset
0x4C
0x00
Table 44. RGB (0 to 255) to SDTV YCrCb (0 to 255)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x08
0x3D
0x04
0x45
0x1D
Red/Cr Coeff 1
0x36
0x2D
Green/Y Coeff 1
0x3E
0xC9
Blue/Cb Coeff 1
0x46
0x3F
0x37
0x19
0x3F
0x09
0x47
0x1A
Red/Cr Coeff 2
0x38
0x27
Green/Y Coeff 2
0x40
0x64
Blue/Cb Coeff 2
0x48
0x93
0x39
0x1E
0x41
0x01
0x49
0x08
Red/Cr Coeff 3
0x3A
0xAC
Green/Y Coeff 3
0x42
0xD3
Blue/Cb Coeff 3
0x4A
0x2D
0x3B
0x08
0x43
0x00
0x4B
0x08
Red/Cr Offset
0x3C
0x00
Green/Y Offset
0x44
0x00
Blue/Cb Offset
0x4C
0x00
Table 45. RGB (0 to 255) to SDTV YCrCb (16 to 235)
Register
Address
Value
Register
Address
Value
Register
Address
Value
0x35
0x07
0x3D
0x04
0x45
0x1D
Red/Cr Coeff 1
0x36
0x06
Green/Y Coeff 1
0x3E
0x1C
Blue/Cb Coeff 1
0x46
0xA3
0x37
0x1A
0x3F
0x08
0x47
0x1B
Red/Cr Coeff 2
0x38
0x1E
Green/Y Coeff 2
0x40
0x11
Blue/Cb Coeff 2
0x48
0x57
Rev. 0 | Page 41 of 44
0x39
0x1E
0x41
0x01
0x49
0x07
Red/Cr Coeff 3
0x3A
0xDC
Green/Y Coeff 3
0x42
0x91
Blue/Cb Coeff 3
0x4A
0x06
0x3B
0x08
0x43
0x01
0x4B
0x08
Red/Cr Offset
0x3C
0x00
Green/Y Offset
0x44
0x00
Blue/Cb Offset
0x4C
0x00
AD9381
OUTLINE DIMENSIONS
16.00
BSC SQ
1.60 MAX
0.75
0.60
0.45
100
1
76
75
PIN 1
14.00
BSC SQ
TOP VIEW
(PINS DOWN)
1.45
1.40
1.35
0.15
0.05
SEATING
PLANE
0.20
0.09
7°
3.5°
0°
0.08 MAX
COPLANARITY
25
51
50
26
VIEW A
0.50
BSC
LEAD PITCH
VIEW A
ROTATED 90° CCW
0.27
0.22
0.17
COMPLIANT TO JEDEC STANDARDS MS-026-BED
Figure 11. 100-Lead Low Profile Quad Flat Package [LQFP]
(ST-100)
Dimensions shown in millimeters
ORDERING GUIDE
Model
AD9381KSTZ-100 1
AD9381KSTZ-1501
AD9381/PCB
1
Max Speed (MHz)
Analog
Digital
100
100
150
150
Temperature
Range
0°C to 70°C
0°C to 70°C
Package Description
100-Lead Low Profile Quad Flat Package (LQFP)
100-Lead Low Profile Quad Flat Package (LQFP)
Evaluation Board
Z = Pb-free part.
Rev. 0 | Page 42 of 44
Package Option
ST-100
ST-100
AD9381
NOTES
Rev. 0 | Page 43 of 44
AD9381
NOTES
© 2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05689-0-10/05(0)
Rev. 0 | Page 44 of 44