MAX4397SCTM+T Maxim Integrated Products, MAX4397SCTM+T Datasheet - Page 18

• Manufacturer Part Number: MAX4397SCTM+T
• Description: IC SW A/V SCART CON 48-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Switchr

Specifications of MAX4397SCTM+T

• Applications: DVD, Set-Top Boxes, TV
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX4397 features single 5V and 12V supply opera-
tion and requires no negative supply. The +12V supply
V
place all bypass capacitors as close as possible with a
10µF capacitor in parallel with a 0.1µF ceramic capacitor.
Connect all V
10µF electrolytic capacitor in parallel with a 0.47µF low-
ESR ceramic capacitor to audio ground. Bypass V
pins with a 0.1µF capacitor to audio ground. Bypass
AUD_BIAS to audio ground with a 10µF electrolytic in
parallel with a 0.1µF ceramic capacitor.
Bypass V
ground. Bypass each V
ceramic capacitor. Connect V
ferrite bead to the +5V supply.
Audio/Video Switch for Dual SCART Connectors
Table 3. Data Format for Write Mode
18
(HEXADECIMAL)
12
REGISTER
ADDRESS
is for the SCART switching function. For pin V
______________________________________________________________________________________
0Ah
0Bh
0Ch
0Dh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
DIG
AUD
with a 0.1µF ceramic capacitor to digital
Power Supplies and Bypassing
pins together to +5V and bypass with a
C_IN clamp
CVBS_OUT
TV_R/C_IN
TV volume
Not used
Not used
VCR_R/
bypass
VCR_Y/
enable
clamp
VCR volume control
BIT 7
VID
to video ground with a 0.1µF
VID
OUT switch
RF_CVBS_
Not used
Not used
VCR_R/
C_OUT
enable
BIT 6
ZCD
in series with a 200nH
RGB gain
CVBS_OUT switch
TV_R/C_OUT
Not used
Not used
Not used
enable
BIT 5
TV_Y/
AUD
12
,
TV_G_OUT
TV G and B video switch
Not used
Not used
Not used
For optimal performance, use controlled-impedance
traces for video signal paths and place input termina-
tion resistors and output back-termination resistors
close to the MAX4397. Avoid routing video traces par-
allel to high-speed data lines.
The MAX4397 provides separate ground connections
for video, audio, and digital supplies. For best perfor-
mance, use separate ground planes for each of the
ground returns and connect all three ground planes
together at a single point. Refer to the MAX4397 evalu-
ation kit for a proven circuit board layout example.
enable
BIT 4
(fast switching)
Not used
Not used
Not used
Not used
Not used
Not used
Not used
TV fast blank
TV volume control
C_IN clamp
TV_B_OUT
Not used
ENC_R/
enable
BIT 3
VCR audio selection
VCR_R/C_OUT
TV_R/C_OUT
CVBS_OUT
ground
ground
enable
BIT 2
TV_Y/
Layout and Grounding
VCR video switch
TV video switch
TVOUT
enable
BIT 1
TV audio selection
Set function VCR
_FS
Set function TV
output mute
RF_CVBS_
TV audio
enable
BIT 0
OUT