Data Sheet

ADV7181C

Rev. E | Page 11 of 20

Pin No.

Mnemonic

Type1

Description

33, 45

NC

No Connect. These pins are not connected internally.

34

FB

I

Fast Switch Overlay Input. This pin switches between CVBS and RGB analog signals.

35, 36, 46, 47, 48, 49

A

IN1 to AIN6

I

Analog Video Input Channels.

38, 39

CAPY1, CAPY2

I

ADC Capacitor Network. See Figure 9 for a recommended capacitor network

for this pin.

40

AVDD

P

Analog Supply Voltage (3.3 V).

41

REFOUT

O

Internal Voltage Reference Output. See Figure 9 for a recommended capacitor

network for this pin.

42

CML

O

Common-Mode Level Pin (CML) for the Internal ADCs. See Figure 9 for a

recommended capacitor network for this pin.

44

CAPC2

I

ADC Capacitor Network. See Figure 9 for a recommended capacitor network

for this pin.

50

SOG/SOY

I

Sync on Green/Sync on Luma Input. Used in embedded synchronization mode.

51

RESET

I

System Reset Input, Active Low. A minimum low reset pulse width of 5 ms

is required to reset the ADV7181C circuitry.

52

ALSB

I

This pin selects the I2C address for the ADV7181C control and VBI readback

ports. ALSB set to Logic 0 sets the address for a write to Control Port 0x40 and

the readback address for VBI Port 0x21. ALSB set to a Logic 1 sets the address

for a write to Control Port 0x42 and the readback address for VBI Port 0x23.

53

SDATA

I/O

I2C Port Serial Data Input/Output Pin.

54

SCLK

I

I2C Port Serial Clock Input. Maximum clock rate of 400 kHz.

55

VS_IN

I

VS Input Signal. Used in CP mode for 5-wire timing mode.

56

HS_IN/CS_IN

I

This pin can be configured in CP mode to be either a digital HS input signal or

a digital CS input signal used to extract timing in a 5-wire or 4-wire RGB mode.

63

FIELD/DE

O

Field Synchronization Output Signal (All Interlaced Video Modes). This pin

also can be enabled as a data enable signal (DE) in CP mode to allow direct

connection to a HDMI/DVI Tx IC.

64

VS

O

Vertical Synchronization Output Signal (SDP and CP Modes).

1 G = ground, I = input, O = output, I/O = input/output, and P = power.