break-it-down

SCART Pinbelegung

Pin	Description	Pin	Description
1	audio output right 0.5 V / <1kohm	12	bus clock / data (SCL)
2	audio input right 0.5 V / >10kohm	13	ground red (RGB)
3	audio output left / Mono 0.5 V / <1kohm	14	ground blanking/data ground
4	ground audio	15	red input (RGB) / Chrominance 0.7 V +-3dB / 75 ohm
5	ground blue (RGB)	16	blanking input/fast switching low 0...0.4Volt=CVBS high 1...3Volt=RGB 75ohms
6	audio input left / Mono 0.5 V / <1kohm	17	ground video output (CVBS)
7	blue input (RGB) 0.7 V +-3dB / 75 ohm	18	ground blanking
8	function select/slow switching 16:9 low 0..2Volt=TV high 9.5...12Volt=AV >10kohms, <2nF	19	Composite video output (CVBS) 1 Volt +-3dB / 75 ohm
9	ground green (RGB)	20	video input 1 Volt +-3dB / 75 ohm
10	bus data (SDA)	21	common ground (plug, shield)
11	green input (RGB) 0.7 V +-3dB / 75 ohm

In the case of a monitor only video or RGB can be used. Normally the monitor switches itself, you switch manually, or only one of the signals is supported. Not all televisions support the RGB in signal. The function select signal is used to switch the television to SCART automatically when the videorecorder starts playing the tape. The I²C bus (SDA/SCL) is used by Philips to transmit informations between videorecorder and television (clock and data, no general definition).