Table 19. register 10h: operating modes, Table 20. register 0eh: status – Rainbow Electronics MAX9671 User Manual
Page 36
MAX9670/MAX9671
Low-Power Audio/Video Switch with Audio
Volume Control for Dual SCART Connectors
36
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BIT
DESCRIPTION
7
6
5
4
3
2
1
0
COMMENTS
0
0
Shutdown
0
1
Standby mode (power-on default).
Input video detection circuits are
active. Audio circuitry is off unless
video is detected. Once slow switch
is detected, the signal paths between
the VCR and TV SCART are
connected.
1
0
Full-power mode with input video
detection and video-load detection
active.
Operating Mode
1
1
Full-power mode without input video
detection and video-load detection
active.
Table 19. Register 10H: Operating Modes
BIT
DESCRIPTION
7
6
5
4
3
2
1
0
COMMENTS
0
0
0 to 2V; internal source
0
1
4.5V to 7V; external source with 16:9
aspect ratio
1
0
Not used
TV Slow-Switching Input Status
1
1
9.5V to 12.6V; external source with
4:3 aspect ratio
0
0
0 to 2V; internal source
0
1
4.5V to 7V; external source with 16:9
aspect ratio
1
0
Not used
VCR Slow-Switching Input Status
1
1
9.5V to 12.6V; external source with
4:3 aspect ratio
0
V
VID
is too low for digital logic to
operate
1
V
VID
is high enough for digital logic to
operate
Power-On Reset
1
The temperature is below the thermal
shutdown limit
Table 20. Register 0EH: Status