IC BLOCK DIAGRAMS AND DESCRIPTIONS
ADV7183AKST(Multiformat SDTV Video Decoder)
Pin Function Descriptions
Pin No. Mnemonic Type Function
3, 9, 14, 31, 71 DGND Digital Ground. G
39, 40, 47, 53, 56 AGND G Analog Ground.
4, 15 DVDDIO P Digital I/O Supply Voltage (3.3 V. )
10, 30, 72 DVDD P Digital Core Supply Voltage (1.8 V).
50 AVDD P Analog Supply Voltage (3.3 V).
38 PVDD P PLL Supply Voltage (1.8 V).
41?46, 57?62 AIN1?AIN12 I Analog Video Input Channels.
11, 13, 16?18, 2NC 5, No Connect Pins.
34, 35, 63, 65, 69,
70, 77, 78
5?8, 19?24, P0?P15 O Video Pixl Output Port. e
32, 33, 73?76
2 HS O HS is a horizontal synchrn output signal. onizatio
1 VS O VS is a vertical synchronization output signal.
80 FIELD O FIELD is a field synchronization output signal.
67 SDA I/O C Port Serial Data IOutput Pin. Input/
68 SCLK I 2C Port Serial Clock Input (Max Clock Rate of 400 kHz). I
66 ALSB I This pin selects the IC address for the ADV7183A. ALSB set to Logic 0 sets the address
for a write as 0x40; for ALSB set to logic high, the ad is 0x42. d ress selected
64 RESET I System Reset Input, Active Low. A minimum low reset pulse width of 5 ms is required to
reset the ADV7183A circuitry.
27 LLC1 O This is a line- locked output clock for the pixel data output by the ADV7183A. Nominally
27 MHz, but varies up or down according to vidngth. eo line le
26 LLC2 O This is a divide-by-2 version of the LLC1 output clock for the pixel data output by the
ADV7183A. Nominally 13.5 MH z, but varies up or down according to video line length.
29 XTAL I This is the input pin for the 27 MHz crystal, or can be overdriven . .3 V, by an external 3
27 MHz clock oscillator source. In crystal mode, the crystal must be a fundamental crystal.
28 XTAL1 O This pin should be connected to the 27 MHz crystal or left as a no connect if an external
3.3 V, 27 MHz clock oscillator source is used to clock the ADV7183A. In crystal mode,
the crystal must be a fundamental crystal.
36 PWRDN I A logic low on this pin places the ADV7183A in a power-down mode. Refer to the I2C
Control Register Map for more options on power-down modes fA. or the ADV7183
79 OE I When set to a logic low, OE enables the pixel output bus, P15?P0 of the ADV7183A. A logic
high on the OE pin places Pins P15?P0, HS, VS, SFL/SYNC_OUT into a high impedance state.
37 ELPF I The recommended external loop filter must be connected to this ELPF pin, as shown in
12 SFL O Subcarrier Frequency Lock. This pin contain a se rial output stream that scan be used to lock
the subcarrier frequency when this decoder is connected to any Analog Devices, Inc. digital
51 REFOUT O Internal Voltage Reference Output. Refer to Figure 42 for a recommended capa citor
network for this pin.
52 CML O The CML pin is a common-mode level for the internal ADCs. Refer to Figure 42 for a
recommended capacitor netwok for this pin. r
48, 49 CAPY1, I ADC s Capacitor Network. Refer to Figure 42 for a recommended capacitor network for
CAPY2 this pin.
54, 55 CAPC1, I ADC s Capacitor Network. Refer to Figure 42 for a recommended capacitor network for