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MAX4399
Audio/Video Switch for Three SCART
Connectors
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9
PIN
NAME
FUNCTION
17
TV_L_IN
TV SCART Left-Channel Audio Input
18, 26
G_AUD
Audio Ground
19
AUX_L_OUT
AUX SCART Left-Channel Audio Output
20
AUX_R_OUT
AUX SCART Right-Channel Audio Output
21
VCR_R_OUT
VCR SCART Right-Channel Audio Output
23
VCR_L_OUT
VCR SCART Left-Channel Audio Output
24
PHONO_R_OUT
Hi-Fi Right-Channel Audio Output
25
PHONO_L_OUT
Hi-Fi Left-Channel Audio Output
27
RF_MONO_OUT
RF Modulator Mono Audio Output
28
TV_L_OUT
TV SCART Left-Channel Audio Output
29
TV_R_OUT
TV SCART Right-Channel Audio Output
31
V12
+12V Supply. Bypass V12 with a 10F capacitor in parallel with a 0.1F capacitor to ground.
32
AUX_SS
AUX SCART Bidirectional Slow-Switch Signal
33
TV_SS
TV SCART Bidirectional Slow-Switch Signal
34
VCR_SS
VCR SCART Bidirectional Slow-Switch Signal
35
TRAP
Trap Filter. Connect a series RLC trap filter to eliminate the color subcarrier frequency
(4.43MHz) from the luma signal. The filter prevents cross-mixing of the color subcarriers when
the luma and chroma signals are added together to form a composite signal. Internally biased
at +0.5V.
36, 42, 50
G_VID
Video Ground
37
TV_FS_OUT
TV SCART Fast-Switching Output. This signal is used to switch the TV to its RGB inputs for on-
screen display purposes.
38, 46, 61
V_VID
Video Supply. Bypass each V_VID with a 0.01F capacitor to V_GND. Connect a 200nH ferrite
bead from V_VID to a 5V supply.
39
RF_CVBS_OUT
RF Modulator Composite Video Output. Internally biased at 1.0V.
40
TV_Y/CVBS_OUT
TV SCART Luma/Composite Video Output. Internally biased at 1.0V.
41
TV_R/C_OUT
TV SCART Red/Chroma Video Output. Internally biased at 1.0V for red video signal and 2.1V
for chroma video signal.
43
TV_G_OUT
TV SCART Green Video Output. Internally biased at 1.0V.
44
TV_B_OUT
TV SCART Blue Video Output. Internally biased at 1.0V.
45
AUX_R/C_OUT
AUX SCART Red/Chroma Video Output. Internally biased at 1.0V for red video signal and 2.1V
for chroma video signal.
47
AUX_Y/CVBS_OUT
AUX SCART Luma/Composite Video Output. Internally biased at 1.0V.
48
VCR_Y/CVBS_OUT
VCR SCART Luma/Composite Video Output. Internally biased at 1.0V.
49
VCR_R/C_OUT
VCR SCART Red/Chroma Video Output. Internally biased at 1.0V for red video signal and 2.1V
for chroma video signal.
51
VID_BIAS
Video Bias Voltage Output. VID_BIAS sets video bias level for chroma signals. Bypass
VID_BIAS with a low-ESR 0.1F capacitor to G_VID.
52
TV_R/C_IN
TV SCART Red/Chroma Video Input. Internally biased at 1.22V for red, or 1.8V for chroma.
Pin Description (continued)