MAX9670CTL+T Maxim Integrated Products, MAX9670CTL+T Datasheet - Page 23

• Manufacturer Part Number: MAX9670CTL+T
• Description: IC AUDIO/VIDEO SWIT DUAL 40TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX9670CTL+T

• Function: Audio/Video Switch
• Circuit: 2 x SCART
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 3.3 V ~ 12 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 40-WFQFN Exposed Pad
• For Use With: MAX9670EVKIT+ - EVALUATION KIT FOR MAX9670
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX9670/MAX9671 support S-video from the set-
top box to the TV, set-top box to the VCR, and VCR to
the set-top box. S-video was not included in the original
SCART specifications but was added afterwards. As a
consequence, the luma (Y) signal of S-video shares the
same SCART pin as the CVBS signal. Likewise, the
chroma (C) signal shares the same SCART pin as the
Figure 14. Standby mode finite state machine. TV_SS is active when either 6V or 12V are present. VCR_SS is active when either 6V
or 12V are present.
TV_SS NOT ACTIVE
VCR_SS ACTIVE
VCR_SS ACTIVE
TV_SS ACTIVE
Volume Control for Dual SCART Connectors
Low-Power Audio/Video Switch with Audio
______________________________________________________________________________________
VCR_SS NOT ACTIVE
TV_SS ACTIVE
FAST SWITCH: NOT APPLICABLE
SLOW SWITCH: TV TO VCR
AUDIO: TV TO VCR
VIDEO: TV TO VCR
TV-TO-VCR
STATE 1
VCR_SS NOT ACTIVE
TV_SS NOT ACTIVE
VCR_SS NOT ACTIVE
TV_SS NOT ACTIVE
VCR_SS NOT ACTIVE
S-Video
SLOW SWITCH: LISTENING FOR ACTIVITY
TV_SS ACTIVE
FAST SWITCH: INACTIVE
AUDIO: INACTIVE
VIDEO: INACTIVE
SEARCH
STATE 0
red signal. The pins that can carry both CVBS and luma
have Y/CVBS in their names, and the pins that can
carry red and chroma have R/C in their names.
Now, the Y/CVBS signals are full duplex while the R/C
signals are half duplex. Therefore, S-video is limited to
being half duplex. The MAX9670/MAX9671 have to
transmit a chroma signal and receive a chroma signal
VCR_SS NOT ACTIVE
TV_SS NOT ACTIVE
VCR_SS ACTIVE
TV_SS ACTIVE
SLOW SWITCH: VCR TO TV
FAST SWITCH: VCR TO TV
TV_SS NOT ACTIVE
VCR_SS ACTIVE
AUDIO: VCR TO TV
VIDEO: VCR TO TV
VCR-TO-TV
TV_SS NOT ACTIVE
STATE 2
VCR_SS ACTIVE
VCR_SS NOT ACTIVE
VCR_SS ACTIVE
TV_SS ACTIVE
TV_SS ACTIVE
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