AD7183

a Advanced Video Decoder with 10-Bit ADC and Component Input Support ADV7183 Digital Output Formats 16-Bit Wide Bus): YCrCb (4:2:2 or 4:1:1) CCIR601/CCIR656 8-Bit or 16-Bit 0.5 V to 2.0 V p-p Input Range Differential Gain, 0.4% Typ Differential Phase, 0.6o Typ Programmable Video Controls: Peak White/Hue/Brightness/Saturation/Contrast APPLICATIONS Security Systems Projectors Digital Televisions DVD-RAM Recorders and Players PDP Displays Video Decoders Hybrid Analog/Digital Set-Top Boxes (continued on page 9) FEATURES Analog Video to Digital YCrCb Video Decoder: NTSC-(M/N), PAL-(B/D/G/H/I/M/N) ADV®7183 Integrates Two 10-Bit Accurate ADCs Clocked from a Single 27 MHz Crystal Dual Video Clocking Schemes: Line-Locked Clock Compatible (LLC) Adaptive Digital Line Length Tracking (ADLLT™) Three-Line Chroma Comb Filter Real-Time Clock and Status Information Output Integrated AGC (Automatic Gain Control) and Clamping Multiple Programmable Analog Input Formats: CVBS (Composite Video) SVHS (Y/C) YCrCb Component (VESA, MII, SMPTE, and BetaCom) 6 Analog Input Video Channels Automatic NTSC/PAL Identification Differential Mode Video Input FUNCTIONAL BLOCK DIAGRAM P15–P0 PIXEL O/P PORT ADV7183 ISO REFOUT AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 ANALOG I/P MULTIPLEXING AUTOMATIC GAIN CONTROL (AGC) CLAMP AND DC RESTORE 10-BIT ADC 10-BIT ADC SHAPING AND NOTCH LPF PEAKING HPF/LPF RESAMPLING AND HORIZONTAL SCALING LUMA DELAY BLOCK FIFO CONTROL BLOCK AND PIXEL OUTPUT FORMATTER AFF HFF/QCLK AEF DV RD LUMA ANTIALIAS LPF SYNC DETECTION 2H LINE MEMORY 27MHz SUBCARRIER RECOVERY DTO RESAMPLING AND HORIZONTAL SCALING CHROMA COMB FILTER OE GL/CLKIN SWITCH CHROMA ANTIALIAS LPF SHAPING LPF VIDEO TIMING AND CONTROL BLOCK 27MHz XTAL OSCILLATOR BLOCK LLC SYNTHESIS WITH LINELOCKED OUTPUT CLOCK I2C-COMPATIBLE INTERFACE PORT LLC1 LLC2 LLCREF ELPF PWRDN HSYNC FIELD VSYNC HREF VREF CLOCK CLOCK RESET SDATA SCLOCK ALSB ADLLT is a trademark and ADV is a registered trademark of Analog Devices, Inc. R EV. 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. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002 ADV7183–SPECIFICATIONS Parameter STATIC PERFORMANCE Resolution (each ADC) Accuracy (each ADC) Integral Nonlinearity3 Differential Nonlinearity3 DIGITAL INPUTS3 Input High Voltage, VINH Input Low Voltage, VINL Input Current, IIN Input Capacitance, CIN DIGITAL OUTPUTS3 Output High Voltage, VOH Output Low Voltage, VOL High Impedance Leakage Current Output Capacitance VOLTAGE REFERENCE3 Reference Range, VREFOUT POWER REQUIREMENTS Digital Power Supply, VDD Digital IO Power Supply, VDDIO Analog Power Supply, VAA Digital Supply Current, IDD Digital IO Supply Current, IDDIO Analog Supply Current, IAA4 Power-Up Time 2 –10 Min 1 (VAA = 4.75 V to 5.25 V, VDD = 3.2 V to 3.5 V, VDDIO = 3.15 V to 3.5 V, TMIN to TMAX2, unless otherwise noted.) Max 10 ± 0.25 ± 0.08 ± 0.5 ± 0.17 Typ Unit Bits LSB LSB V V µA pF V V µA pF V V V V mA mA mA Field ISOURCE = 3.2 mA ISINK = 0.4 mA BSL, 2 V Input Range to ADC 2 V Input Range to ADC Test Conditions 0.8 +10 10 2.4 0.4 10 30 2.15 3.2 3.15 4.75 2.2 3.3 3.3 5.0 125 7 150 1 2.25 3.5 3.5 5.25 165 180 IVREFOUT = 0 µA Sleep Mode until Powered Up NOTES 1 The max/min specifications are guaranteed over this range. The max/min values are typical over VAA = 4.75 V to 5.25 V, VDD = 3.2 to 3.5 V, and VDDIO = 3.15 V to 3.5 V range. 2 Temperature range T MIN to TMAX = 0°C to 70°C 3 Guaranteed by characterization. 4 IAA is total analog current taken by AVDD supply pins. Specifications subject to change without notice. –2– R EV. 0 ADV7183 VIDEO PERFORMANCE SPECIFICATIONS1, 2 Parameter NONLINEAR SPECIFICATIONS Differential Phase Differential Gain Luma Nonlinearity 2 (VAA = 4.75 V to 5.25 V, VDD = 3.2 V to 3.5 V, VDDIO = 3.15 V to 3.5 V, TMIN to TMAX3, unless otherwise noted.) Max Unit Degree % % dB dB dB Test Conditions CVBS, Comb/No Comb CVBS, Comb/No Comb Min Typ 0.6 0.7 1.0 NOISE SPECIFICATIONS2 SNR (Ramp) Analog Front End Channel Crosstalk Analog Front End Channel Crosstalk LOCK TIME AND JITTER SPECIFICATIONS2 Horizontal Lock Time Horizontal Recovery Time Horizontal Lock Range Line Length Variation Over Field Line Length Variation Over Field HLock Lost Declared HLock Lost Declared Vertical Lock Time VLock Lost Declared FSC Subcarrier Lock Range Color Lock Time LLC Clock Jitter (Short Time Jitter) LLC Clock Jitter (Frame Jitter) CHROMA-SPECIFIC SPECIFICATIONS2 Hue Accuracy Color Saturation Accuracy Color Gain Control Range Analog Color Gain Range Digital Color Gain Range Chroma Amplitude Error Chroma Phase Error Chroma Luma Intermodulation LUMA-SPECIFIC SPECIFICATIONS2 Luma Brightness Accuracy Luma Contrast Accuracy 61 54 63 63 CVBS S-Video/YUV, Single-Ended S-Video/YUV, Differential-Ended 50 50 ±5 ±1 ±1 10 20 2 1 ± 400 50 1 37 Lines Lines % % % HSync HSync VSync VSync Hz Lines ns ns TV/VCR mode VCR Mode/Surveillance Mode TV Mode TV Mode, Number of Missing HSyncs VCR/Surveillance Mode, Number of Missing HSyncs First Lock into Video Signal All Modes, Number of Missing VSyncs NTSC/PAL HLock to Color Lock Time RMS Clock Jitter RMS Clock Jitter 1.0 1.0 –6 –6 0 0.1 0 0.1 1.0 1.0 +18 +6 12 Degree % dB dB dB % Degree % % % S-Video, YUV, Overall CGC Range (Analog and Digital) S-Video, YUV CVBS, S-Video, YUV Video Input Range = 1.0 V p-p Video Input Range = 1.0 V p-p NOTES 1 The max/min specifications are guaranteed over this range. The max/min values are typical over VAA = 4.75 V to 5.25 V, VDD = 3.2 to 3.5 V, and VDDIO = 3.15 V to 3.5 V range. 2 Guaranteed by characterization. 3 Temperature range T MIN to TMAX = 0°C to 70°C Specifications subject to change without notice. R EV. 0 –3– ADV7183 TIMING SPECIFICATIONS Parameter SYSTEM CLOCK AND CRYSTAL Nominal Frequency I C PORT SCL Clock Frequency SCL Min Pulsewidth High, t1 SCL Min Pulsewidth Low, t2 Hold Time (Start Condition), t3 Setup Time (Start Condition), t4 Data Setup Time, t5 SCL/SDA Rise Time, t6 SCL/SDA Fall Time, t7 Setup Time (Stop Condition), t8 RESET FEATURE Reset Pulse Input Width CLOCK OUTPUTS LLC1 Cycle Time, t9 LLC1 Cycle Time, t9 LLC1 Cycle Time, t9 LLC1 Min Low Period, t10 LLC1 Min High Period, t11 LLC1 Falling to LLCREF Falling, t12 LLC1 Falling to LLCREF Rising, t13 LLC1 Rising to LLC2 Rising, t14 LLC1 Rising to LLC2 Falling, t15 CLKIN Cycle Time, t18 DATA AND CONTROL OUTPUT Data Output Hold Time, t17 Data Output Access Time, t16 Data Output Access Time, t19 Data Output Hold Time, t20 Propagation Delay to High Z, t21 Max Output Enable Access Time, t22 Min Output Enable Access Time, t23 26 30 20 11 5 8 5 33 25 8 11 3 2 2 2 1 (VAA = 4.75 V to 5.25 V, VDD = 3.2 V to 3.5 V, VDDIO = 3.15 V to 3.5 V, TMIN to TMAX , unless otherwise noted.) Min Typ 27 0 0.6 1.3 0.6 0.6 100 Max Unit MHz Test Conditions 400 300 300 0.6 74 37 33.9 40.8 18 18 4 6 3 1 37 kHz µs µs µs µs ns ns ns µs ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns CCIR601 Mode 27 MHz PAL Square Pixel Mode 29.5 MHz NTSC Square Pixel Mode 24.5 MHz CCIR601 Mode 27 MHz CCIR601 Mode 27 MHz 5 3 SCAPI and CAPI Modes LLC Mode LLC Mode SCAPI and CAPI Modes SCAPI and CAPI Modes 6 2 NOTES 1 The max/min specifications are guaranteed over this range. The max/min values are typical over VAA = 4.75 V to 5.25 V, VDD = 3.2 to 3.5 V, and VDDIO = 3.15 V to 3.5 V range. 2 Temperature Range T MIN to TMAX = 0°C to 70°C 3 Guaranteed by characterization. Specifications subject to change without notice. ANALOG FRONT END SPECIFICATIONS Parameter CLAMP CIRCUITRY External Clamp Capacitor Input Impedance Voltage Clamp Level Clamp Source Current Sink Current Source Current Clamp Sink Current Min 2 1 (VAA = 4.75 V to 5.25 V, VDD = 3.2 V to 3.5 V, VDDIO = 3.15 V to 3.5 V, TMIN to TMAX , unless otherwise noted.) Max Unit µF MΩ V µA µA mA mA Typ 0.1 10 1.4 3 –3 0.9 –0.9 Test Conditions Clamp Switched Off Signal Already Clamped (Fine Clamping) Signal Already Clamped (Fine Clamping) Acquire Mode (Fast Clamping) Acquire Mode (Fast Clamping) NOTES 1 The max/min specifications are guaranteed over this range. The max/min values are typical over VAA = 4.75 V to 5.25 V, VDD = 3.2 to 3.5 V, and VDDIO = 3.15 V to 3.5 V range. 2 Temperature range T MIN to TMAX = 0°C to 70°C Specifications subject to change without notice. –4– R EV. 0 ADV7183 t3 SDATA t3 SCLOCK t6 t1 t5 t8 t2 t7 t4 Figure 1. MPU Port Timing Diagram t9 t10 LLC1 t11 LLCREF t12 t13 t14 LLC2 t15 t17 OUTPUTS P0–P19, HREF, VREF, VSYNC, HSYNC, FIELD, DV t16 Figure 2. LLC Clock, Pixel Port, and Control Outputs Timing Diagram t18 CLKIN t20 OUTPUTS P0–P15, HREF, VREF, VSYNC, HSYNC, FIELD, DV t19 Figure 3. Pixel Port and Control Outputs in CAPI and SCAPI Mode Timing Diagram OE t23 OUTPUTS P0–P15, HS, VS, VREF, HREF, FIELD, DV t21 t22 Figure 4. OE Timing Diagram R EV. 0 –5– ADV7183 ABSOLUTE MAXIMUM RATINGS 1 ORDERING GUIDE VAA to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V VDDIO to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V Voltage on Digital Input Pins . . GND – 0.5 V to VAA + 0.5 V Storage Temperature (TS) . . . . . . . . . . . . . . –65°C to +150°C Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . 150°C Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 260°C Analog Outputs to GND2 . . . . . . . . . . . . GND – 0.5 V to VAA NOTES 1 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 listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2 Analog output short circuit to any power supply or common can be of an indefinite duration. Model ADV7183KST Temperature Range 0°C to 70°C Package 80-LQFP PIN CONFIGURATION HREF/HRESET VREF/VRESET SCLK SDATA DVDD3 RESET AVSS DVSS3 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 VS/ACTIVE 1 HS/ACTIVE 2 DVSSIO 3 DVDDIO 4 P11 5 P10 6 P9 7 P8 8 DVSS2 9 DVDD2 10 AFF 11 HFF/QCLK/GL 12 AEF 13 DVSSIO 14 DVDDIO 15 CLKIN 16 GPO3 17 GPO2 18 P7 19 P6 20 AVSS6 60 AIN5 59 AVSS5 58 AIN4 57 AVSS4 56 AVSS 55 CAPC2 54 CAPC1 53 AVSS 52 CML 51 REFOUT 50 AVDD 49 CAPY2 48 CAPY1 47 AVSS 46 AIN3 45 AVSS3 44 AIN2 43 AVSS2 42 AIN1 41 AVSS1 FIELD ALSB PIN 1 IDENTIFIER AD7183 TOP VIEW (Not to Scale) 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 P0 GPO1 GPO0 LLCREF LLC1/PCLK XTAL1 PWRDN ELPF PVDD LLC2 XTAL DVDD1 DVSS1 P5 P4 P3 P2 P1 PVSS AIN6 P12 P13 P14 P15 ISO OE DV RD 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 the ADV7183 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. AVSS WARNING! ESD SENSITIVE DEVICE –6– R EV. 0 ADV7183 PIN FUNCTION DESCRIPTIONS Pin 1 Mnemonic VS/VACTIVE Input/Output O Function VS or Vertical Sync. A dual-function pin, (OM_SEL[1:0] = 0, 0) is an output signal that indicates a vertical sync with respect to the YUV pixel data. The active period of this signal is six lines of video long. The polarity of the VS signal is controlled by the PVS bit. VACTIVE (OM_SEL[1:0] = 1, 0 or 0, 1) is an output signal that is active during the active/viewable period of a video field. The polarity of VACTIVE is controlled by PVS bit. HS or Horizontal Sync. A dual-function pin, (OM_SEL[1:0] = 0, 0) is a programmable horizontal sync output signal. The rising and falling edges can be controlled by HSB[9:0] and HSE[9:0] in steps of 2 LLC1. The polarity of the HS signal is controlled by the PHS bit. HACTIVE (OM_SEL[1:0] = 1, 0 or 0, 1) is an output signal that is active during the active/viewable period of a video line. The active portion of a video line is programmable on the ADV7183. The polarity of HACTIVE is controlled by PHS bit. Digital I/O Ground Digital I/O Supply Voltage (3.3 V) Video Pixel Output Port. 8-bit multiplexed YCrCb pixel port (P15–P8), 16-bit YCrCb pixel port (P15–P8 = Y and P7–P0 = Cb,Cr). Ground for Digital Supply Digital Supply Voltage (3.3 V) Almost Full Flag. A FIFO control signal indicating when the FIFO has reached the almost full margin set by the user (use FFM[4:0]). The polarity of this signal is controlled by the PFF bit. Half Full Flag. A multifunction pin, (OM_SEL[1:0] = 1, 0) is a FIFO control signal that indicates when the FIFO is half full. The QCLK (OM_SEL[1:0] = 0, 1) pin function is a qualified pixel output clock when using FIFO SCAPI mode. The GL (OM_SEL[1:0] = 0, 0) function (Genlock output) is a signal that contains a serial stream of data that contains information for locking the subcarrier frequency. The polarity of HFF signal is controlled by PFF bit. Almost Empty Flag. A FIFO control signal, it indicates when the FIFO has reached the almost empty margin set by the user (use FFM[4:0]). The polarity of this signal is controlled by PFF bit. Asynchronous FIFO Clock. This asynchronous clock is used to output data onto the P19-P0 bus and other control signals. General-Purpose Outputs controlled via I2C Clock Reference Output. This is a clock qualifier distributed by the internal CGC for a data rate of LLC2. The polarity of LLCREF is controlled by the PLLCREF bit. Line-Locked Clock System Output Clock/2 (13.5 MHz) Line-Locked Clock System Output Clock. A dual-function pin (27 MHz ± 5%) or a FIFO output clock ranging from 20 MHz to 35 MHz. Second terminal for crystal oscillator; not connected if external clock source is used. Input terminal for 27 MHz crystal oscillator or connection for external oscillator with CMOS-compatible square wave clock signal Power-Down Enable. A logical low will place part in a power-down status. This pin is used for the External Loop Filter that is required for the LLC PLL. 2 HS/HACTIVE O 3, 14 4, 15 5–8, 19–24, 32, 33, 73–76 9, 31, 71 10, 30, 72 11 DVSSIO DVDDIO P15–P0 DVSS1–3 DVDD1–3 AFF G P O G P O 12 HFF/QCLK/GL I/O 13 AEF O 16 17, 18, 34, 35 25 CLKIN GPO[3:0] LLCREF I O O 26 27 28 29 36 37 38 39 LLC2 LLC1/PCLK XTAL1 XTAL PWRDN ELPF PVDD PVSS O O O I I I P G R EV. 0 –7– ADV7183 PIN FUNCTION DESCRIPTIONS (continued) Pin 40, 47, 53, 56, 63 41, 43, 45, 57, 59, 61 42, 44, 46, 58, 60, 62 48, 49 50 51 52 54, 55 64 65 Mnemonic AVSS AVSS1–6 Input/Output G G Function Ground for Analog Supply Analog Input Channels. Ground if single-ended mode is selected. These pins should be connected directly to REFOUT when differential mode is selected. Video Analog Input Channels ADC Capacitor Network Analog Supply Voltage (5 V) Internal Voltage Reference Output Common-Mode Level for ADC ADC Capacitor Network System Reset Input. Active Low. Input Switch Over. A low to high transition on this input indicates to the decoder core that the input video source has been changed externally and configures the decoder to reacquire the new timing information of the new source. This is useful in applications where external video muxes are used. This input gives the advantage of faster locking to the external muxed video sources. A low to high transition triggers this input. TTL Address Input. Selects the MPU address: MPU address = 88h ALSB = 0, disables I2C filter MPU address = 8Ah ALSB = 1, enables I2C filter MPU Port Serial Data Input/Output MPU Port Serial Interface Clock Input VREF or Vertical Reference Output Signal. Indicates start of next field. VRESET or Vertical Reset Output is a signal that indicates the beginning of a new field. In SCAPI/CAPI mode this signal is one clock wide and active low relative to CLKIN. It immediately follows the HRESET pixel, and indicates that the next active pixel is the first active pixel of the next field. HREF or Horizontal Reference Output Signal. A dual-function pin (enabled when Line-Locked Interface is selected, OM_SEL[1:0] = 0,0), this signal is used to indicate data on the YUV output. The positive slope indicates the beginning of a new active line; HREF is always 720 Y samples long. HRESET or Horizontal Reset Output (enabled when SCAPI or CAPI is selected, OM_SEL[1:0] = 0, 1 or 1, 0) is a signal that indicates the beginning of a new line of video. In SCAPI/CAPI this signal is one clock cycle wide and is output relative to CLKIN. It immediately follows the last active pixel of a line. The polarity is controlled via PHVR. Asynchronous FIFO Read Enable Signal. A logical high on this pin enables a read from the output of the FIFO. DV or Data Valid Output Signal. In SCAPI/CAPI mode, DV performs two functions, depending on whether SCAPI or CAPI is selected. It toggles high when the FIFO has reached the AFF margin set by the user, and remains high until the FIFO is empty. The alternative mode is where it can be used to control FIFO reads for bursting information out of the FIFO. In API mode DV indicates valid data in the FIFO, which includes both pixel information and control codes. The polarity of this pin is controlled via PDV. Output Enable Controls Pixel Port Outputs. A logic high will three-state P19–P0. ODD/EVEN Field Output Signal. An active state indicates that an even field is being digitized. The polarity of this signal is controlled by the PF bit. –8– R EV. 0 AIN1–6 CAPY1–2 AVDD REFOUT CML CAPC1–2 RESET ISO I I P O O I I/O I 66 ALSB I 67 68 69 SDATA SCLK VREF/VRESET I/O I O 70 HREF/HRESET O 77 78 RD DV I O 79 80 OE FIELD I O ADV7183 (FEATURES continued from page 1) CCIR/Square Pixel Operation Integrated On-Chip Video Timing Generator Synchronous or Asynchronous Output Timing Line-Locked Clock Output Closed Captioning Passthrough Operation Vertical Blanking Interval Support Power-Down Mode 2-Wire Serial MPU Interface (I2C-Compatible) 5 V Analog 3.3 V Digital Supply Operation 80-Lead LQFP Package GENERAL DESCRIPTION ANALOG INPUT PROCESSING The ADV7183 is an integrated video decoder that automatically detects and converts a standard analog baseband television signal compatible with worldwide standards NTSC or PAL into 4:2:2 or 4:1:1 component video data compatible with 16-/8-bit CCIR601/CCIR656. The advanced and highly flexible digital output interface enables performance video decoding and conversion in both frame-buffer-based and line-locked clock-based systems. This makes the device ideally suited for a broad range of applications with diverse analog video characteristics, including tape-based sources, broadcast sources, security/surveillance cameras, and professional systems. Fully integrated line stores enable real-time horizontal and vertical scaling of captured video down to icon size. The 10-bit accurate A/D conversion provides professional quality SNR performance. This allows true 8-bit resolution in the 8-bit output mode. The six analog input channels accept standard composite, S-video, and component YCrCb video signals in an extensive number of combinations. AGC and clamp restore circuitry allow an input video signal peak-to-peak range of 0.5 V up to 2 V. Alternatively, these can be bypassed for manual settings. The fixed 27 MHz clocking of the ADCs and data path for all modes allows very precise and accurate sampling and digital filtering. The line-locked clock output allows the output data rate, timing signals, and output clock signals to be synchronous, asynchronous, or line-locked even with ± 5% line length variation. The output control signals allow glueless interface connection in almost any application. The ADV7183 modes are set up over a 2-wire serial bidirectional port (I2C-compatible). The ADV7183 is fabricated in a 5 V CMOS process. Its monolithic CMOS construction ensures greater functionality with lower power dissipation. The ADV7183 is packaged in a small 80-pin LQFP package. The ADV7183 has six analog video input channels. These six channels can be arranged in a variety of configurations to support up to six CVBS input signals, three S-video input signals, and two YCrCb component analog video input signals. The INSEL[3:0] bits control the input type and channel selected. The analog front end includes three clamp circuits for DC restore. There are three sample-and-hold amplifiers prior to the ADC which are used to enable simultaneous sampling of up to three channels in a YCrCb input mode. Two 10-bit ADCs are used for sampling. The entire analog front end is fully differential which ensures that the video is captured to the highest quality possible. This is very important in highly integrated systems such as video decoders. Figure 5 shows the analog front end section of the ADV7183. MUX 6CVBS 3YC 2YUV CLAMP V1 CLAMP U1 CLAMP Y1 SHA 2 SHA 2 SHA 2 10 MUX Y ADC2 10 C ADC2 NOTES ANALOG SIGNAL PATH KEPT FULLY DIFFERENTIAL ADCs: 10-BIT ACCURATE; 12dB GAIN RANGE 1CLAMP BLOCKS CONTAIN A SET OF CURRENT SOURCES FOR DC RESTORATION; U AND V HAVE ONLY HALF BANDWIDTH (SAMPLED SIMULTANEOUSLY, CONVERTED SEQUENTIALLY) 2PIPELINED Figure 5. Analog Front End Block Diagram CLAMPING The clamp control on the ADV7183 consists of a digitally controlled analog current and voltage clamp and a digitally controlled digital clamp circuit. The coupling capacitor on each channel is used to store and filter the clamping voltage. A digital controller controls the clamp up and down current sources that charge the capacitor on every line. Four current sources are used in the current clamp control, two large current sources are used for coarse clamping, and two small current sources are used for fine clamping. The voltage clamp, if enabled, is only used on startup or if a channel is switched. This clamp pulls the video into the midrange of the ADC, which results in faster clamping and faster lock-in time for the decoder. The fourth clamp controller is fully digital and clamps the ADC output data, which results in extremely accurate clamping. It also has the added advantage of being fully digital, which results in very fast clamp timing and makes the entire clamping process very robust in terms of handling large amounts of hum that can be present on real-world video signals. R EV. 0 –9– ADV7183 In S-video mode there are two clamp controllers used to separately control the luminance clamping and the chrominance clamping. Also in YCrCb component input mode there are two clamp controllers used to control the luminance clamping and the CrCb clamping separately; there are, however, individual current clamps on the Cr and Cb inputs. User programmability is built into the clamp controllers which enable the current and digital clamp controllers to be set up to user-defined conditions. Refer to analog clamp control register (14H), digital clamp control register (15H), and digital color clamp offset register (15H and 16H) for control settings. ANALOG-TO-DIGITAL CONVERTERS 5. Blank level to sync tip is used to set luminance gain; manual MIRE[2:0] is automatically controlled to set the maximum value through the luminance channel. There is override of this mode when white peak mode is detected. White peak mode is activated when the input video exceeds the maximum luminance range for long periods; this mode is designed to prevent clipping of the input video signal. 6. Based on active video peak white. PW_UPD sets the gain update frequency (once per field). 7. Based on average active video. PW_RES sets what lines are used; only relevant if the signal conforms to PAL 625 line standard. 8. The luminance channel gain is frozen at its present value. ANALOG INPUT LEVEL 2V p-p – dB MAXIMUM 6 0 RANGE = 12dB 0 AUTOMATIC GAIN CONTROL The AGC control block on the ADV7183 is a digitally based system. This controller ensures that the input video signal (CVBS, S-video, or YCrCb) is scaled to its correct value such that the YCrCb digital output data matches the correct gain of the video signal. The AGC has an analog input video range of 0.5 V p-p to 2.0 V p-p, which gives a –6 dB to +6 dB gain range. Figure 6 demonstrates this range. This AGC range will compensate for video signals that have been incorrectly terminated or have been attenuated due to cable loss or other factors. There are two main control blocks: one for the luminance channel and one for the chrominance channel. The luminance automatic gain control has eight modes of operation: 1. Manual AGC mode where gain for the luminance path is set manually using LGM[11:0]. 2. Blank level to sync tip is used to set the luminance gain; manual MIRE[2:0] controls the maximum value through the luminance channel. There is no override of this mode when white peak mode is detected. 3. Blank level to sync tip is used to set luminance gain; manual MIRE[2:0] controls the maximum value through luminance channel. There is override of this mode when white peak mode is detected. White peak mode is activated when the input video exceeds the maximum luminance range for long periods; this mode is designed to prevent clipping of the input video signal. 4. Blank level to sync tip is used to set luminance gain; MIRE[2:0] is automatically controlled to set the maximum value through the luminance channel. There is no override of this mode when white peak mode is detected. –6 MINIMUM Figure 6. Analog Input Range The chrominance automatic gain control has four modes of operation: 1. Manual AGC mode where gain for chrominance path is set manually using CGM[11:0]. 2. Luminance gain used for chrominance channel. 3. Chrominance automatic gain based on color burst amplitude. 4. Chrominance gain frozen at its present setting. Both the luminance and chrominance AGC controllers have a programmable time constant that allows the AGC to operate in four modes: slow, medium, fast, and video quality controlled. The maximum IRE (MIRE[2:0]) control can be used to set the maximum input video range that can be decoded. Table I shows the selectable range. Table I. MIRE Control MIRE[2:0] 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Function PAL (IRE) NTSC (IRE) 133 125 120 115 110 105 100 100 122 115 110 105 100 100 100 100 –10– R EV. 0 CONTROLLED ADC INPUT LEVEL – dB Two 10-bit ADCs are used in the ADV7183, and they run from a 27 MHz input clock. An integrated band gap generates the required reference voltages for the converters. If the decoder is configured in CVBS mode, the second ADC can be switched off to reduce power consumption, see PSC[1:0]. ADV7183 LUMINANCE PROCESSING 0 ATTENUATION – dB Figure 7 shows the luminance data path. The 10-bit data from the Y ADC is applied to an antialiasing low pass filter that is designed to band-limit the input video signal such that aliasing does not occur. This filter dramatically reduces the design on an external analog antialaising filter; this filter need only remove components in the input video signal above 22 MHz. The data then passes through a shaping or notch filter. When in CVBS mode a notch filter must be used to remove the unwanted chrominance data that lies around the subcarrier frequency. A wide variety of programmable notch filters for both PAL and NTSC are available. The YSFM[4:0] control the selection of these filters; refer to Figures 8 to 16 for plots of these filters. If S-video or component mode is selected a notch filter is not required. The ADV7183 offers 18 possible shaping filters (SVHS1-18) with a range of low pass filter responses from 0.5 MHz up to 5.75 MHz. The YSFM[4:0] control the selection of these filters. Please refer to Figures 8 through 16 for filter plots. The next stage in the luminance processing path is a peaking filter; this filter offers a sharpness function on the luminance path. The degree of sharpness can be selected using YPM[2:0]. If no sharpness is required, this filter can be bypassed. The luminance data is then passed through a resampler to correct for line length variations in the input video. This resampler is designed to always output 720 pixels per line for standard PAL or NTSC. The resampler used on the ADV7183 is of very high quality as it uses 128 phases to resample the video, giving 1/128 pixel resolution. The resampler is controlled by a sync detection block that calculates line length variations on the input video. The final stage in the luminance path, before it is applied to an output formatter block, is a two-line delay store that is used to compensate for delays in the chroma data path when chroma comb filter is selected. ANTIALIASING LPF SYNC DETECTION –10 –20 –30 –40 SVHS1 SVHS2 SVHS17 SVHS3 SVHS18 SVHS4 SVHS5 SVHS6 SVHS7 SVHS8 SVHS9 SVHS10 SVHS11 SVHS12 SVHS13 SVHS14 SVHS15 SVHS16 –50 –60 0 1 2 3 4 5 FREQUENCY – MHz 6 7 8 Figure 8. Luminance SVHS1–18 Shaping Filter Responses 1.0 0.8 0.6 ATTENUATION – dB 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 1 2 3 4 FREQUENCY – MHz 5 6 Figure 9. Luminance SVHS1–SVHS18 Shaping Filter Responses (Close-Up) ADC DATA 0 SHAPING AND NOTCH FILTER PEAKING FILTER RESAMPLE –10 ATTENUATION – dB NTSC WN1 NTSC WN2 NTSC WN3 NTSC NN1 NTSC NN2 NTSC NN3 NTSC WN2 NTSC NN3 NTSC WN1 NTSC NN2 NTSC NN1 NTSC WN3 –20 Y DELAY LINE STORES –30 –40 Figure 7. Luminance Processing Path –50 –60 0 1 2 3 4 5 FREQUENCY – MHz 6 7 8 Figure 10. Luminance NTSC Narrow/Wide Notch Shaping Filter R EV. 0 –11– ADV7183 1.0 0.8 0.6 ATTENUATION – dB 10 8 6 PS2 PS1 ATTENUATION – dB 0.2 0.4 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 0.5 1.0 1.5 2.0 2.5 FREQUENCY – MHz 3.0 NTSC WN1 NTSC WN2 NTSC WN3 NTSC NN1 NTSC NN2 NTSC NN3 4 2 0 –2 PS3 PS4 PS5 –4 –6 –8 0 1 2 PS6 3 4 FREQUENCY – MHz 5 6 7 3.5 4.0 Figure 11. Luminance NTSC Narrow/Wide Notch Shaping Filter (Close-Up) Figure 14. Luminance Peaking Filter Responses in S-Video (SVHS17 Selected) 0 PAL NN1 PAL NN2 PAL NN3 PAL W1 PAL W2 PAL NN3 PAL W1 PAL W2 PAL NN2 6 4 2 PC1 –10 ATTENUATION – dB –20 PAL NN1 –30 ATTENUATION – dB PC2 0 –2 –4 –6 PC3 PC4 PC5 PC6 –40 –50 –8 –60 0 1 2 3 4 5 FREQUENCY – MHz 6 7 8 –10 0 1 2 3 4 FREQUENCY – MHz 5 6 7 Figure 12. Luminance PAL Narrow/Wide Notch Shaping Filter Responses Figure 15. Luminance Peaking Filter Responses in CVBS (PAL NN3 Selected) 1.0 0.8 6 PC1 4 0.6 ATTENUATION – dB ATTENUATION – dB 0.2 0.4 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 0.5 1.0 PAL NN1 PAL NN2 PAL NN3 PAL WN1 PAL WN2 2 PC2 0 PC3 PC4 –2 PC5 PC6 –4 –6 –8 1.5 2.0 2.5 FREQUENCY – MHz 3.0 3.5 4.0 0 1 2 3 4 FREQUENCY – MHz 5 6 Figure 13. Luminance PAL Narrow/Wide Notch Shaping Filter Responses (Close-Up) Figure 16. Luminance Peaking Filter Responses in CVBS (NTSC NN3 Selected) –12– R EV. 0 ADV7183 CHROMINANCE PROCESSING 0 Figure 17 shows the chrominance data path. The 10-bit data from the Y ADC (CVBS mode) or the C ADC (S-video) is first demodulated. The demodulation is achieved by multiplying by the locally generated quadrature subcarrier, where the sign of the cos subcarrier is inverted from line to line according to the PAL switch, and then low pass filtering is applied to removed components at twice the subcarrier frequency. For NTSC, the phase of the locally generated subcarrier during color burst is the same as the phase of the color burst. For PAL, the phase of the color burst changes from line to line, relative to the phase during active video, and the phase of the locally generated subcarrier is the average of these two values. The chrominance data is then passed through an antialiasing filter which is a band-pass filter to remove the unwanted luminance data. This antialaising filter dramatically reduces the external antialaising filter requirements as it has only to filter components above 25 MHz. In component mode the demodulation block is bypassed. The next stage of processing is a shaping filter that can be used to limit the chrominance bandwidth to between 0.5 MHz and 3 MHz; the CSFM[2:0] can be used to select these responses. It should be noted that in CVBS mode a filter of no greater than 1.5 MHz should be selected, as CVBS video is typically band-limited to below 1.5 MHz. In S-video mode a filter of up to 2 MHz can be used. In component mode a filter of up to 3 MHz can be used as component video has higher bandwidth than CVBS or S-video. The chrominance data is then passed through a resampler to correct for line length variations in the input video. This resampler is designed to always output 720 pixels per line for standard PAL or NTSC. The resampler used on the ADV7183 is of very high quality as it uses 64 phases to resample the video, giving 1/64 pixel resolution. The resampler is controlled by a sync detection block that calculates line length variations on the input video. The final stage in the chrominance path, before it is applied to an output formatter block, is chroma comb filter. SINE ANTIALIASING LPF CV/C 27MHz INTERLEAVE COSINE ANTIALIASING LPF 13.5MHz –10 ATTENUATION – dB –20 SH1 –30 SH2 SH3 SH4 SH5 SH6 –40 –50 –60 0 0.5 1.0 1.5 2.0 2.5 FREQUENCY – MHz 3.0 3.5 4.0 Figure 18. Chrominance Shaping Filter Responses 1.0 0.8 0.6 ATTENUATION – dB 0.2 0.4 0 –0.2 –0.4 SH1 –0.6 –0.8 –1.0 0 0.5 1.0 1.5 2.0 2.5 FREQUENCY – MHz 3.0 3.5 4.0 SH2 SH3 SH4 SH5 SH6 Figure 19. Chrominance Shaping Filter Responses (Close-Up) SHAPING LPF 6.75MHz 13.5MHz SUBCARRIER RECOVERY SYNC DETECTION RESAMPLE U/V CHROMA COMB FILTERS Figure 17. Chrominance Processing Path R EV. 0 –13– ADV7183 OUTPUT INTERFACE Mode Selection Overview The ADV7183 supports three output interfaces: LLC-compatible synchronous pixel interface, the CAPI interface, and the SCAPI interface. When the part is configured in the synchronous pixel interface mode, pixel and control data are output synchronous with LLC1 (8-bit mode) or LLC2 (16-bit mode). In this mode control and timing information for field, vertical blanking, and horizontal blanking identification may also be encoded as control codes. When configured in CAPI or SCAPI mode only the active pixel data is output synchronous with the CLKIN (asynchronous FIFO clock). The pixels are output via a 512-pixel deep, 20-bit wide FIFO. HACTIVE and VACTIVE are output on independent pins. HACTIVE will be active during the active viewable period of a video line and VACTIVE will be active during the active LLC1 viewable period of a video field. CAPI and SCAPI modes will always output data in 16-bit, so this mode of operation cannot be used when an 8-bit or 10-bit output interface is required. After power-up, the ADV7183 will default to the LLC-compatible 8-bit CCIR656 4:2:2 @ LLC. Synchronous Pixel Interface When the output is configured for an 8-bit pixel interface, the data is output on the pixel output port P[15:8]. In this mode, 8 bits of chrominance data will precede 8 bits of luminance data. New pixel data is output on the pixel port after each rising edge of LLC1. When the output is configured for a 16bit pixel interface, the luminance data is output on P[15:8] and the chrominance data on P[7:0]. In this mode the data is output with respect to LLC2. Figure 20 shows the basic timing relationship for this mode. LLC2 PIXEL DATA P15-8[7:0] SAV 00 SAV XY Y0 Y1 Y2 Y3 Y4 PIXEL DATA P7-0[7:0] SAV FF 00 SAV Cb0 Cr0 Cb1 Cr1 Cb2 Figure 20. Synchronous Pixel Interface, 16-Bit Example –14– R EV. 0 ADV7183 CVBS INPUT HREF DV VREF VSYNC FIELD SAV/EAV V BIT SAV/EAV H BIT SAV/EAV F BIT Figure 21. NTSC End Even Field (LLC Mode) CVBS INPUT HREF DV VREF VSYNC FIELD SAV/EAV V BIT SAV/EAV H BIT SAV/EAV F BIT Figure 22. NTSC End Odd Field (LLC Mode) R EV. 0 –15– ADV7183 CVBS INPUT HREF DV VREF VSYNC FIELD SAV/EAV V BIT SAV/EAV H BIT SAV/EAV F BIT Figure 23. PAL End Even Field (LLC Mode) CVBS INPUT HREF DV VREF VSYNC FIELD SAV/EAV V BIT SAV/EAV H BIT SAV/EAV F BIT Figure 24. PAL End Odd Field (LLC Mode) –16– R EV. 0 ADV7183 Control and Pixel Interface FIFO Modes When the ADV7183 is configured to operate in this mode, pixel data generated within the part is buffered by a 512-pixel deep FIFO. Only active video pixels and control codes are written into the FIFO; the others have been dropped. In this mode the output is operating asynchronously and a CLKIN must be provided to clock pixels out of the FIFO. The CLKIN must operate faster than the effective data transfer rate into the FIFO. This rate will be determined by the number of active pixels per line. If the CLKIN is not above this, the FIFO may overflow. The ADV7183 controls the FIFO when set to operate in SCAPI mode. DV (data valid) is internally fed back to the RD (read enable), unlike the synchronous pixel mode where DV will not indicate the validity of the current pixel and only acts as an indication of how much data is stored in the FIFO. DV will go high at the same time as AFF and remain high until the FIFO is empty. By internally setting DV to RD the system ensures that the FIFO never overflows. When using this mode the status of data on the pixel outputs can be determined by two indicators, DV and QCLK. DV will go active two clock cycles (LLC1) before valid data appears on the bus. QCLK is a qualified clock derived from CLKIN, but will only be present when valid pixel data is output from the FIFO. DV indicates valid pixel or control code data. Using these two control signals, the user can differentiate between pixel information and invalid data. Figure 25 shows the basic timing relationship for this mode. The operation of the ADV7183 in CAPI mode is similar to that of SCAPI mode with the exception that now the FIFO is controlled by the system; the system must monitor the almost full flag (AFF), the almost empty flag (AEF), and control the FIFO read enable (RD). Unlike SCAPI mode, the QCLK is not gated and is therefore continuous. Figure 26 shows the basic timing relationship of this mode. PIXEL DATA DV CLKIN QCLK AFF AEF NOTE THE POLARITY OF AFF AND AEF ARE CONTROLLED BY THE PFF BIT. DV POLARITY IS SET BY THE PDV BIT. Figure 25. SCAPI Output Mode FIFO Operation DATA RD CLKIN QCLK AFF AEF NOTE THE POLARITY OF AFF AND AEF ARE CONTROLLED BY THE PFF BIT. Figure 26. CAPI Output Mode FIFO Operation R EV. 0 –17– ADV7183 Manual Clock Control The ADV7183 offers several output clock mode options; the output clock frequency can be set by the input video line length, a fixed 27 MHz output, or by a user-programmable value. Information on the clock control register at 28h can be found in the register access map. When Bit 6 of this register (CLKMANE) is set to Logic “1,” the output clock frequency will be determined by the user-programmable value (CLKVAL[15:0]). Using this mode the output clock frequency is calculated as: LLC = CLKVAL[17: 0] 220 × 28 × 3 × 27 MHz 16 For example, a required clock frequency of 25 MHz would yield a CLKVAL of 2D266h (184934). Color Subcarrier Control The color subcarrier manual frequency control register (CSMF[27:0]) can be used to set the DDFS block to a userdefined frequency. This function can be useful if the color subcarrier frequency of the incoming video signal is outside the standard FSC lock range. Setting Bit 4 Reg 23h (CSM) to a Logic “1” enables the manual frequency control, the frequency of which will be determined by CSMF[27:0]. The value of CSMF[27:0] can be calculated as: CSMF[27: 0] = FSC ∗× *Required To control the device on the bus the following protocol must be followed. First the master initiates a data transfer by establishing a start condition, defined by a high to low transition on SDATA while SCLOCK remains high. This indicates that an address/data stream will follow. All peripherals respond to the start condition and shift the next 8 bits (7-bit address + R/W bit). The bits are transferred from MSB down to LSB. The peripheral that recognizes the transmitted address responds by pulling the data line low during the ninth clock pulse. This is known as an acknowledge bit. All other devices withdraw from the bus at this point and maintain an idle condition. The idle condition is where the device monitors the SDATA and SCLOCK lines waiting for the start condition and the correct transmitted address. The R/W bit determines the direction of the data. A Logic “0” on the LSB of the first byte means that the master will write information to the peripheral. A Logic “1” on the LSB of the first byte means that the master will read information from the peripheral. The ADV7183 acts as a standard slave device on the bus. The data on the SDATA pin is 8 bits long, supporting the 7-bit addresses plus the R/W bit. The ADV7183 has 71 subaddresses to enable access to the internal registers. It therefore interprets the first byte as the device address and the second byte as the starting subaddress. The subaddresses autoincrement, allowing data to be written to or read from the starting subaddress. A data transfer is always terminated by a stop condition. The user can also access any unique subaddress register on a one-by-one basis, without having to update all the registers. Stop and start conditions can be detected at any stage during the data transfer. If these conditions are asserted out of sequence with normal read and write operations, they cause an immediate jump to the idle condition. During a given SCLOCK high period the user should only issue one start condition, one stop condition, or a single stop condition followed by a single start condition. If an invalid subaddress is issued by the user, the ADV7183 will not issue an acknowledge and will return to the idle condition. If the user exceeds the highest subaddress in autoincrement mode, the following action will be taken: 1. In read mode, the highest subaddress register contents will continue to be output until the master device issues a no-acknowledge. This indicates the end of a read. A no-acknowledge condition is where the SDATA line is not pulled low on the ninth pulse. 2. In write mode, the data for the invalid byte will not be loaded into any subaddress register, a no-acknowledge will be issued by the ADV7183, and the part will return to the idle condition. 228 27 MHz MPU PORT DESCRIPTION The ADV7183 supports a 2-wire serial (I2C-compatible) microprocessor bus driving multiple peripherals. Two inputs, serial data (SDATA) and serial clock (SCLOCK) carry information between any device connected to the bus. Each slave device is recognized by a unique address. The ADV7183 has two possible slave addresses for both read and write operations. These are unique addresses for the device and are illustrated in Figure 27. The LSB sets either a read or write operation. Logic Level “1” corresponds to a read operation while Logic Level “0” corresponds to a write operation. A1 is set by setting the ALSB pin of the ADV7183 to Logic Level “0” or Logic Level “1.” 1 1 2 0 0 0 1 0 A11 X2 Address Control. Set up by ALSB. Read/Write Control. Write = 0; Read = 1 Figure 27. Slave Address WRITE SEQUENCE S SLAVE ADDR A(S) SUB ADDR A(S) DATA A(S) ••• DATA A(S) P LSB = 0 READ SEQUENCE LSB = 1 S SLAVE ADDR A(S) SUB ADDR A(S) S SLAVE ADDR A(S) DATA A(M) ••• DATA A(M) P S = START BIT P = STOP BIT A(S) = ACKNOWLEDGE BY SLAVE A(M) = ACKNOWLEDGE BY MASTER A(S) = NO-ACKNOWLEDGE BY SLAVE A(M) = NO-ACKNOWLEDGE BY MASTER Figure 28. Write and Read Sequences –18– R EV. 0 ADV7183 SDATA SCLOCK S 1–7 8 9 1–7 8 9 ACK 1–7 DATA 8 9 ACK P STOP START ADDR R/W ACK SUB ADDR Figure 29. Bus Data Transfer Table II. Subaddress Register Register Name BASIC BLOCK Input Control Video Selection Video Enhancement Control Output Control Extended Output Control General-Purpose Output Reserved FIFO Control Contrast Control Saturation Control Brightness Control Hue Control Default Value Y Default Value C Temporal Decimation Power Management Status Register Info Register REGISTER ACCESSES Addr (Hex) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 Register Name ADVANCED BLOCK Reserved Analog Control (Internal) Analog Clamp Control Digital Clamp Control 1 Digital Clamp Control 2 Shaping Filter Control Reserved Comb Filter Control Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Color Subcarrier Control 1 Color Subcarrier Control 2 Color Subcarrier Control 3 Color Subcarrier Control 4 Pixel Delay Control Manual Clock Control 1 Manual Clock Control 2 Manual Clock Control 3 Auto Clock Control AGC Mode Control Chroma Gain Control 1 Chroma Gain Control 2 Luma Gain Control 1 Luma Gain Control 2 Manual Gain Shadow Control 1 Manual Gain Shadow Control 2 Misc Gain Control HSync Position Control 1 HSync Position Control 2 HSync Position Control 3 Polarity Control Reserved Reserved Reserved Reserved Addr (Hex) 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 44 45 F1 F2 The MPU can write to or read from all of the registers of the ADV7183 except the subaddress register, which is a write only register. The subaddress register determines which register the next read or write operation accesses. All communications with the part through the bus start with an access to the subaddress register. Then a read/write operation is performed from/to the target address which then increments to the next address until a stop command on the bus is performed. REGISTER PROGRAMMING The following section describes each register in terms of its configuration. Subaddress Register (SR7–SR0) The communications register is an 8-bit write only register. After the part has been accessed over the bus and a read/write operation is selected, the subaddress is set up. The subaddress register determines to/from which register the operation takes place. Table II shows the various operations under the control of the subaddress register. Zero should always be written to SR7–SR6. Register Select (SR5–SR0) These bits are set up to point to the required starting address. R EV. 0 –19– ADV7183 Table III. Basic Registers Register Input Control Video Selection Addr (Hex) 00 01 D7 D6 D5 D4 D3 D2 INSEL.2 SQPE YPM.2 D1 INSEL.1 VID QUAL.1 YPM.1 D0 INSEL.0 VID QUAL.0 YPM.0 VID SEL.3 VID SEL.2 VID SEL.1 VID SEL.0 INSEL.3 ASE BETACAM 4FSC COR.1 VBI EN BT656-4 HL_EN BL_C_VBI GPEH GPEL GP0.3 TOD OF SEL.3 OF SEL.2 DIFFIN COR.0 OF SEL.1 Video Enhancement 02 Control Output Control Extended Output Control General-Purpose Output Reserved FIFO Control Contrast Control Saturation Control Brightness Control Hue Control Default Value Y Default Value C Temporal Decimation 03 04 05 06 07 08 09 0A 0B 0C 0D 0E RES FFST CON.7 SAT.7 BRI.7 HUE.7 DEF Y.5 DEF C.7 AFR CON.6 SAT.6 BRI.6 HUE.6 DEF Y.4 DEF C.6 TDR.3 TRAQ FR CON.5 SAT.5 BRI.5 HUE.5 DEF Y.3 DEF C.5 TDR.2 PWRDN OF SEL.O OM SEL.1 OMEL.O RANGE GP0.2 GP0.1 GP0.0 FFM.4 CON.4 SAT.4 BRI.4 HUE.4 DEF Y.2 DEF C.4 TDR.1 PS CG FFM.3 CON.3 SAT.3 BRI.3 HUE.3 DEF Y.1 DEF C.3 TDR.0 PS REF FFM.2 CON.2 SAT.2 BRI.2 HUE.2 DEF Y.0 DEF C.2 TDC.1 PDBP FFM.1 CON.1 SAT.1 BRI.1 HUE.1 FFM.0 CON.0 SAT.0 BRI.0 HUE.0 DEF_ DEF_ AUTO_EN VAL_EN DEF C.1 TDC.0 PSC.1 DEF C.0 TDE PSC.0 Power Management 0F Status Register Info Register 10 11 STATUS.7 STATUS.6 STATUS.5 STATUS.4 STATUS.3 STATUS.2 STATUS.1 STATUS.0 IDENT.7 IDENT.6 IDENT.5 IDENT.4 IDENT.3 IDENT.2 IDENT.1 IDENT.0 Table IV. Advanced Registers Register Reserved Reserved Analog Clamp Control Digital Clamp Control 1 Digital Clamp Control 2 Shaping Filter Control Reserved Addr (Hex) 12 13 14 15 16 17 18 D7 D6 D5 D4 D3 D2 D1 D0 TIM_OE VCLEN DCCM DCC0.7 CSFM.2 DCT.1 DCC0.6 CSFM.1 DCT.0 DCC0.5 CSFM.0 CCLEN DCFE DCC0.4 YSFM.4 FACL.1 DCC0.11 DCC0.3 YSFM.3 FACL.0 DCC0.10 DCC0.2 YSFM.2 FICL.1 DCC0.9 DCC0.1 YSFM.1 FICL.0 DCC0.8 DCC0.0 YSFM.0 Comb Filter Control 19 Color Subcarrier Control 1 23 CCMB_AD CCM.1 CSM CSMF.27 CCM.0 CSMF.26 CSMF.25 CSMF.24 –20– R EV. 0 ADV7183 Table IV. Advanced Registers (continued) Register Color Subcarrier Control 2 Color Subcarrier Control 3 Color Subcarrier Control 4 Pixel Delay Control Manual Clock Control 1 Manual Clock Control 2 Manual Clock Control 3 Auto Clock Control Addr (Hex) 24 25 26 27 28 29 2A 2B D7 CSMF.23 CSMF.15 CSMF.7 SWPC FIX27E D6 CSMF.22 CSMF.14 CSMF.6 D5 CSMF.21 CSMF.13 CSMF.5 CTA.2 D4 CSMF.20 CSMF.12 CSMF.4 CTA.1 D3 CSMF.19 CSMF.11 CSMF.3 CTA.0 D2 CSMF.18 CSMF.10 CSMF.2 D1 CSMF.17 CSMF.9 CSMF.1 D0 CSMF.16 CSMF.8 CSMF.0 CLKMANE CLKVAL. CLKVAL. 17 16 CLKVAL. CLKVAL. CLKVAL. CLKVAL. CLKVAL. CLKVAL. CLKVAL.9 CLKVAL.8 15 14 13 12 11 10 CLKVAL.7 CLKVAL.6 CLKVAL.5 CLKVAL.4 CLKVAL.3 CLKVAL.2 CLKVAL.1 CLKVAL.0 ACKLM.2 ACKLM.1 ACKLM.0 LAGC.2 CAGT.1 CMG.7 LAGT.1 LMG.7 SGUE LMGS.7 LMGS.6 CKE HSB.9 HSB.7 HSE.7 PHS HSB.8 HSB.6 HSE.6 PHVR FSC_INV HSE.9 HSB.5 HSE.5 PVS LMGS.5 LMGS.4 MIRE.2 HSE.8 HSB.4 HSE.4 PLLCR HSB.3 HSE.3 PF HSB.2 HSE.2 PDV HSB.1 HSE.1 PFF HSB.0 HSE.0 PCLK CAGT.0 CMG.6 LAGT.0 LMG.6 LMG.5 LMG.4 CMG.5 CMG.4 LAGC.1 LAGC.0 CMG.11 CMG.3 LMG.11 LMG.3 LMGS.11 LMGS.3 MIRE.1 CMG.10 CMG.2 LMG.10 LMG.2 LMGS.10 LMGS.2 MIRE.0 CAGC.1 CMG.9 CMG.1 LMG.9 LMG.1 LMGS.9 LMGS.1 AV_AL CAGC.0 CMG.8 CMG.0 LMG.8 LMG.0 LMGS.8 LMGS.10 PW_UPD AGC Mode Control 2C Chroma Gain Control 1 Chroma Gain Control 2 Luma Gain Control 1 Luma Gain Control 2 Manual Gain Shadow Control 1 Manual Gain Shadow Control 2 Misc Gain Control Hsync Position Control 1 Hsync Position Control 2 Hsync Position Control 3 Polarity Control Resample Control Reserved Reserved 2D 2E 2F 30 31 32 33 34 35 36 37 44 F1 F2 R EV. 0 –21– ADV7183 Table V. Input Control Register (Subaddress 00) Bit Description 1 INSEL[3:0] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 1 1 1 1 0 0 0 0 1 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Bit 2 0 0 0 0 1 1 1 1 0 0 0 Bit 1 0 0 1 1 0 0 1 1 0 0 1 Bit 0 0 1 0 1 0 1 0 1 0 1 0 Register Setting 2 CVBS In on AIN1 CVBS In on AIN2 CVBS In on AIN3 CVBS In on AIN4 CVBS In on AIN5 CVBS In on AIN6 Y on AIN1, C on AIN4 3 Y on AIN2, C on AIN5 Y on AIN3, C on AIN6 4 Y on AIN1, U on AIN4, V on AIN5 Y on AIN2, U on AIN3, V on AIN6 Auto Detect PAL (BGHID), NTSC without Pedestal Auto Detect PAL (BGHID), NTSC (M) with Pedestal Auto Detect PAL (N), NTSC (M) without Pedestal Auto Detect PAL (N), NTSC (M) with Pedestal NTSC (M) without Pedestal NTSC (M) with Pedestal NTSC 4.43 without Pedestal NTSC 4.43 with Pedestal PAL BGHID without Pedestal PAL N with Pedestal PAL M without Pedestal PAL M with Pedestal PAL Combination N PAL Combination N with Pedestal VID_SEL[3:0] 5 NOTES 1 Allows the user to select an input channel as well as the input format. 2 Composite 3 S-Video 4 YUV 5 Allows the user to select the input video standard. Table VI. Video Selection Register (Subaddress 01) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 0 Broadcast Quality VID_QUAL[1:0]1 0 1 TV Quality 1 0 VCR Quality 1 1 Surveillance Quality 0 Standard Mode SQPE2 1 Enable Square Pixel Mode 0 Single-Ended Inputs DIFFIN3 1 Differential Inputs 0 Standard Video Operation FFSC4 1 Select 4 FSC Mode5 BETACAM 0 Standard Video Input 1 Betacam Input Enable RESERVED 0 Set to Zero 1 INSEL change will not cause reacquire. ASE6 0 INSEL change will trigger reacquire. NOTES 1 Allows the user to influence the time constant of the system depending on the input video quality. 2 Allows the user to enable/disable the square pixel operation. 3 Allows the user to select a differential input mode for every entry in the INSEL[3:0] table. 4 4 FSC Mode. Allows the selection of a special NTSC mode where the data is resampled to 4 F SC sampling rate. As a result the LLC will operate at a 4 F SC rate as well. Only valid for NTSC input. 5 NTSC only 6 Automatic Startup Enable. When set a change in the INSEL register will automatically be detected and lead the device to enter a video reacquire mode. May be disabled for genlocked video sources. –22– R EV. 0 ADV7183 Table VII. Video Enhancement Control Register (Subaddress 02) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 0 0 YPM[2:0]1 C = 4.5 dB, S = 9.25 dB2 0 0 1 C = 4.5 dB, S = 9.25 dB3 0 1 0 C = 4.5 dB, S = 5.75 dB 0 1 1 C = 1.25 dB, S = 3.3 dB 1 0 0 No Change; C = 0, S = 0 1 0 1 C = –1.25 dB, S = –3 dB 1 1 0 C = –1.75 dB, S = –8 dB 1 1 1 C = –3.0 dB, S = –8 dB 0 0 No Coring COR[1:0]4 0 1 Truncate if Y < black + 8 1 0 Truncate if Y < black + 16 1 1 Truncate if Y < black + 32 RESERVED 0 0 0 Set to Zero NOTES 1 Y Peaking Filter Mode. Allows the user to boost/attenuate luma signals around the color subcarrier frequency. Used to enhance the picture and improve the contrast. 2 C = Composite (2.6 MHz) 3 S = S-Video (3.75 MHz) 4 Coring Selection. Controls optional coring of the Y output signal depending on its level. Table VIII. Output Control Register (Subaddress 03) Bit Description 1 OM_SEL[1:0] OF_SEL[3:0] 2 TOD 3 VBI_EN 4 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 0 0 1 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 0 1 0 1 Bit 0 0 1 0 1 Register Setting LLC-Compatible SCAPI Mode CAPI Mode Not Valid Setting 16-bit @ LLC2 4:2:2 CCIR656 8-bit @ LLC 4:2:2 CCIR656 12-bit @ LLC2 4:1:1 Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Drivers Dependent on OE Pin Drivers Three-Stated Regardless of OE Pin All Lines Filtered and Scaled Active Video Region Only NOTES 1 Output Mode Selection. Selects the output mode as in the timing and interface type. 2 Allows the user to choose from a set of output formats. 3 Three-State Output Drivers. Allows the user to three-state the output drivers regardless of the state of the OE pin. 4 Allows VBI data (lines 1 to 21) to be passed through with only a minimum amount of filtering performed. R EV. 0 –23– ADV7183 Table IX. Extended Output Control Register (Subaddress 04) Bit Description 1 RANGE RESERVED DDOS[2:0] 2 4 BT656-4 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 1 1 1 0 0 0 0 0 1 Register Setting CCIR-Compliant Fill Whole Accessible Range No Additional Data BT656-3-Compatible BT656-4-Compatible 3 NOTES 1 Allows the user to select the range of output values. Can be CCIR601-compliant or fill the whole accessible number range. 2 D Data Output Selection. If the 100-pin package is used, the 12 additional pins can output additional data. 3 12 Pins Three-State 4 Allows the user to select an output mode that is compatible with BT656-4 or BT656-3. Table X. General-Purpose Output Register (Subaddress 05) Bit Description GPO[3:0] GPEL 2 1 GPEH 3 BL_C_VBI HL_EN 5 4 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 0 0 0 User Programmable HD Test Pattern Off 0 GPO[1:0] Three-Stated 1 GPO[1:0] Enabled 0 GPO[3:2] Three-Stated 1 GPO[3:2] Enabled 0 Decode and Output Color During VBI 1 Blank Cr and Cb Data During VBI 0 GPO[0] Pin Function6 1 GPO[0] Shows HLOCK Status6 NOTES 1 Pixel Data Valid Off. These general-purpose output pins may be programmed by the user but are only available in selected output modes OF_SEL[3:0] and when the output drivers are enabled using GPEL, GPEH, and HL_Enable bits. 2 General Purpose Enable Low. Enables the output drivers for the general-purpose outputs Bits 0 and 1. 3 General Purpose Enable High. Enables the output drivers for the general-purpose outputs Bits 2 and 3. 4 Blank Chroma During VBI. 5 Hlock Enable. This bit causes the GPO[0] pin to output Hlock instead of GPO[0]. Only available in certain output modes. 6 GPO lower bits must be enabled GPEL. Disabled. Table XI. FIFO Control Register (Subaddress 07) Bit Description 1 FFM[4:0] 2 FR AFR 4 FFST 5 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 0 1 0 0 0 1 0 1 0 1 Register Setting User Programmable Normal Operation 3 FIFO Reset No Auto Reset Auto Reset Synchronous to CLKIN Synchronous to 27 MHz NOTES 1 FIFO Flag Margin. Allows the user to program the location at which the FIFO flags AEF and AFF. 2 FIFO Reset. Setting this bit will cause the FIFO to reset. 3 Bit is auto cleared. 4 Automatic FIFO Reset. Setting this bit will cause the FIFO to automatically reset at the end of each field of video. 5 FIFO Flag Self Time. Sets whether the FIFO flags AEF, AFF, and HFF are output synchronous to the external CLKIN of the 27 MHz internal clock. Table XII. Contrast Register (Subaddress 08) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting CON[7:0]* 1 0 0 0 0 0 0 0 *Contrast Adjust. This is the user control for contrast adjustment. –24– R EV. 0 ADV7183 Table XIII. Saturation Adjust Register (Subaddress 09) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting SAT[7:0]* 0 0 0 0 0 0 0 0 –42 dB 1 0 0 0 0 0 0 0 0 dB 1 1 1 1 1 1 1 1 6 dB *Saturation Adjust. Allows the user to adjust the saturation of color output. Table XIV. Brightness Adjust Register (Subaddress 0A) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting BRI[7:0]* 0 0 0 0 0 0 0 0 0 dB 0 1 1 1 1 1 1 1 3 dB 1 0 0 0 0 0 0 0 –3 dB *Controls the brightness of the video signal. Range = ± 3 dB. Table XV. Hue Adjust Register (Subaddress 0B) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting HUE[7:0]* 0 0 0 0 0 0 0 0 0° 0 1 1 1 1 1 1 1 90° 1 0 0 0 0 0 0 0 –90° *Contains the value for the color hue adjustment. Range = ± 90°. Table XVI. Default Value Y Register (Subaddress 0C) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 DEF_ VAL_ EN1 Use Programmed Value2 1 Use Default Value DEF_ VAL_ 0 Use Programmed Value4 AUTO_EN3 1 Use Default Value 0 0 0 1 0 0 DEF_Y[5:0]5 NOTES 1 Default Value Enable 2 Y, Cr, and Cb Values 3 Default Value Auto-Enable. In the case of lost lock enables/disables default values. 4 When lock is lost. 5 Default Value Y. Holds the Y default value. Table XVII. Default Value C Register (Subaddress 0D) Bit Description DEF_C[7:0] * Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 1 0 0 0 Cr[7:0] = {DEF_C[7:4], 0, 0, 0, 0} 1 0 0 0 Cb[7:0] = {DEF_C[3:0], 0, 0, 0, 0} *Default Value C. Cr and Cb default values are defined in this register. R EV. 0 –25– ADV7183 Table XVIII. Temporal Decimation Register (Subaddress 0E) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 Disabled TDE1 1 Enabled 0 0 Suppress Frames; Start with Even Field TDC[1:0]2 0 1 Suppress Frames; Start with Odd Field 1 0 Suppress Even Fields Only 1 1 Suppress Odd Fields Only 0 0 0 0 Skip None TDR[3:0]3 0 0 0 1 Skip 1 Field/Frame 0 0 1 0 Skip 2 Fields/Frames 0 0 1 1 Skip 3 Fields/Frames 0 1 0 0 Skip 4 Fields/Frames 0 1 0 1 Skip 5 Fields/Frames 0 1 1 0 Skip 6 Fields/Frames 0 1 1 1 Skip 7 Fields/Frames 1 0 0 0 Skip 8 Fields/Frames 1 0 0 1 Skip 9 Fields/Frames 1 0 1 0 Skip 10 Fields/Frames 1 0 1 1 Skip 11 Fields/Frames 1 1 0 0 Skip 12 Fields/Frames 1 1 0 1 Skip 13 Fields/Frames 1 1 1 0 Skip 14 Fields/Frames 1 1 1 1 Skip 15 Fields/Frames RESERVED 0 Set to Zero NOTES 1 Temporal Decimation Enable. Allows the user to enable/disable the temporal function. Configured using TDC[1:0] and TDR[3:0]. 2 Temporal Decimation Control. Allows the user to select the suppression of selected fields of video. 3 Temporal Decimation Rate. Specifies how many fields/frames to be skipped before a valid one is output. As specified in the TDC[1:0] register. Table XIX. Power Management Register (Subaddress 0F) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 0 Full Operation PSC[1:0]1 0 1 CVBS Input Only 1 0 Digital Only 1 1 Power Save Mode 0 Power-Down Controller by Pin PDBP2 1 Power-Down Controller by Bit 0 Reference Functional PS_REF3 1 Reference in Power Save Mode 0 Clock Generator Functional PS_CG4 1 CG in Power Save Mode 0 System Functional PWRDN 5 1 Power-Down 0 Normal Operation TRAQ6 1 Require Video Signal 0 RESET7 1 Resets Digital Core and I2C NOTES 1 Power Save Control. Allows a set of different power save modes to be selected. 2 Power Down Bit Priority. There are two ways to shut down the digital core; the Power-Down Bit sets which has higher priority. 3 Power Save Reference. Allows the user to enable/disable the internal analog reference. 4 Power Save for the LLC Clock Generator 5 Power Down. Disables the input pads and powers down the 27 MHz clock. 6 Timing Reacquire. Will cause the part to reaquire the video signal and is the software version of the ISO pin. If bit is set will clear itself on the next 27 MHz clock cycle. 7 Resets Digital Core and I 2C self-clearing bit. –26– R EV. 0 ADV7183 Table XX. Status Register1 (Subaddress 10) Bit Description 2 STATUS[7:0] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Register Setting In Lock (current) Lost Lock (since last read) FSC Locked (current) 50 Hz Field Rate Auto Detected ADC Underflow Detected ADC Overflow Detected White Peak Active Color Kill Active NOTES 1 Read only 2 Provides information about the internal status of the decoder. Table XXI. Info Register1 (Subaddress 11) Bit Description 2 IDENT[7:0] Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting X X X X X X X X 0 = v85a, 3 = v85b, 4 = v85b3, 5 = v85b3 NOTES 1 Read only 2 Provides identification on the revision of the part. Table XXII. Analog Control Internal Register (Subaddress 13) Bit Description TIM_OE * RESERVED Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 1 0 1 0 0 0 1 1 Register Setting Dependent on OE and TOD HS, VS, F Forced Active Set at Default Value *Timing Signals Output. Enables the user to force the output drivers for H-SYNC,V-SYNC, and Field into an active state regardless of the OE pin and TOD bit. Table XXIII. Analog Clamp Control Register (Subaddress 14) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 0 I On for 16 Clock Cycles FICL[1:0]1 0 1 I On for 32 Clock Cycles 1 0 I On for 64 Clock Cycles 1 1 I On for 128 Clock Cycles 0 0 I On for 16 Clock Cycles FACL[1:0]2 0 1 I On for 32 Clock Cycles 1 0 I On for 64 Clock Cycles 1 1 I On for 128 Clock Cycles 0 I Sources Switched Off CCLEN 3 1 I Sources Enabled 0 Voltage Clamp Disabled VCLEN 4 1 Voltage Clamp Enabled RESERVED 0 0 Set to Zero NOTES 1 Fine Clamp Length. Controls the number of clock cycles for which the slow current is on. 2 Fast Clamp Length. Controls the number of clock cycles for which the fast current is on. 3 Current Clamp Enable. Allows the user to switch off the I sources in the analog front end. 4 Voltage Clamp Enable. Allows the user to disable the voltage clamp circuitry. R EV. 0 –27– ADV7183 Table XXIV. Digital Clamp Control 1 Register (Subaddress 15) Bit Description 1 DCCO[11:8] DCFE 2 DCT[1:0] 3 DCCM[7:0] 4 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting X X X X Only applicable if DCCM is set to manual offset mode. 0 Digital Clamp Operational 1 Digital Clamp Frozen 0 0 Slow (TC = 1 second) 0 1 Medium (TC = 0.5 second) 1 0 Fast (TC = 0.1 second) 1 1 Dependent on VID_QUAL 0 Automatic Digital Clamp 1 Manual Offset Correction5 NOTES 1 Digital Color Clamp Offset. Holds upper 4 bits of the digital offset value which is added to the raw data from the ADC before entering the core. 2 Digital Clamp Freeze Enable. Allows the user to freeze the digital clamp loop at any point in time. 3 Digital Clamp Timing. Determines the time constant of the digital clamping circuitry. 4 Digital Color Clamp Mode. Sets the mode of operation for the digital clamp circuitry. Offset correction via DCCO for C only. 5 Offset Correction via DCCO for C only. Table XXV. Digital Clamp Control 2 Register (Subaddress 16) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting DCCO[7:0]* X X X X X X X X *Digital Color Clamp Offset. Holds the lower 8 bits of the digital offset value which is added to the raw data from the ADC before entering the core. Only applicable if DCCM is set to manual offset mode. Table XXVI. Shaping Filter Control Register (Subaddress 17) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting 0 0 0 0 0 Auto Wide Notch YSFM[4:0]1 0 0 0 0 1 Auto Narrow Notch 0 0 0 1 0 SVHS 1 – – – – – – 1 0 0 1 0 SVHS 17 1 0 0 1 1 PAL NN1 1 0 1 0 0 PAL NN2 1 0 1 0 1 PAL NN3 1 0 1 1 0 PAL WN 1 1 0 1 1 1 PAL WN 2 1 1 0 0 0 NTSC NN1 1 1 0 0 1 NTSC NN2 1 1 0 1 0 NTSC NN3 1 1 0 1 1 NTSC WN1 1 1 1 0 0 NTSC WN2 1 1 1 0 1 NTSC WN3 1 1 1 1 0 Not Used 1 1 1 1 1 SVHS 18 0 0 0 Auto Selection 1.5 MHz CSFM[2:0]2 0 0 1 Auto Selection 2.17 MHz 0 1 0 SH1 – – – – 1 1 0 SH5 1 1 1 SH6 NOTES 1 Y Shaping Filter Mode. Allows the user to select a wide range of low-pass and notch filters. 2 C Shaping Filter Mode. Allows the selection from a range of low-pass chrominance filters. Auto = filter selected based on scaling factor. –28– R EV. 0 ADV7183 Table XXVII. Comb Filter Control Register (Subaddress 19) Bit Description RESERVED 1 CCM[1:0] CCMB_AD 2 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 0 0 0 0 0 1 1 0 1 Bit 2 Bit 1 Bit 0 0 0 0 1 0 1 Register Setting Set to Zero No Comb 1H 2H Not Valid, Do Not Use Chroma Comb Nonadaptive Chroma Comb Adaptive NOTES 1 Chroma Comb Mode. Selects a primary mode for the filter. 2 Chroma Comb Adaptive Table XXVIII. Color Subcarrier Control 1 Register (Subaddress 23) Bit Description 1 CSMF[27:24] 2 CSM RESERVED Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 X X X X 0 1 1 1 1 Register Setting Manual FSC Disabled User Defined FSC 3 Set to One NOTES 1 Color Subcarrier Manual Frequency. Holds the value used to enable the user to support odd subcarrier frequencies. 2 Color Subcarrier Manual 3 Defined in CSFM[27:0] Table XXIX. Color Subcarrier Control 2 Register (Subaddress 24) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting CSMF[23:16]* X X X X X X X X *Color Subcarrier Manual Frequency. Holds the value used to enable the user to support odd subcarrier frequencies. Table XXX. Color Subcarrier Control 3 Register (Subaddress 25) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting CSMF[15:8]* X X X X X X X X *Color Subcarrier Manual Frequency. Holds the value used to enable the user to support odd subcarrier frequencies. Table XXXI. Color Subcarrier Control 4 Register (Subaddress 26) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting CSMF[7:0]* X X X X X X X X *Color Subcarrier Manual Frequency. Holds the value used to enable the user to support odd subcarrier frequencies. R EV. 0 –29– ADV7183 Table XXXII. Pixel Delay Control Register (Subaddress 27) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting RESERVED 0 0 0 Set to Zero 0 0 0 Not Valid CTA[2:0]1 0 0 1 Chroma + 2 Pixel (Early) 0 1 0 Chroma + 1 Pixel (Early) 0 1 1 No Delay 1 0 0 Chroma – 1 Pixel (Late) 1 0 1 Chroma – 2 Pixel (Late) 1 1 0 Chroma – 3 Pixel (Late) 1 1 1 Not Valid RESERVED 1 Set to One 0 No Swapping SWPC2 1 Swap the Cr and Cb Values NOTES 1 Chroma Timing Adjust. Allows a specified timing difference between the luma and chroma samples. 2 Allows the Cr and Cb samples to be swapped. Table XXXIII. Manual Clock Control 1 Register (Subaddress 28) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting X X CLKVAL[17:16]1 RESERVED 1 1 1 1 Set to Default 0 Output Frequency Set by Video CLKMANE 2 1 Frequency Set by CLKVAL[17:0] 0 Output Frequency Set by Clock Generator FIX27E3 1 Output 27 MHz Fixed NOTES 1 If enabled via CLKMANE, CLKVAL[17:0] determines the fixed output frequency. On the LLC, LLC2, and LLCREF pins. 2 Clock Generator Manual Enable. Allows the analog clock generator to produce a fixed clock frequency that is not dependent on the video signal. 3 Allows the o/p of fixed 27 MHz crystal clock via LLC, LLC2, and LLCR EF o/p pins. Table XXXIV. Manual Clock Control 2 Register (Subaddress 29) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting CLKVAL[15:8]* X X X X X X X X *If enabled via CLKMANE, CLKVAL[17:0] determines the fixed output frequency. On the LLC, LLC2, and LLCREF pins. Table XXXV. Manual Clock Control 3 Register (Subaddress 2A) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting CLKVAL[7:0]* X X X X X X X X *If enabled via CLKMANE, CLKVAL[17:0] determines the fixed output frequency. On the LLC, LLC2, and LLCREF pins. –30– R EV. 0 ADV7183 Table XXXVI. Auto Clock Control Register (Subaddress 2B) Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting RESERVED 0 0 0 0 0 Set to Zero ACLKN[2:0]* 0 0 0 Color Burst Line 0 0 1 Start Line 24 Color Burst Line 0 1 0 Active Video 0 1 1 Active Video (