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8.9.
Port status commands
8.9.1. Input port status
Description: Shows the actual status of the input ports.
Command {:ISD}
Response (ISD●<INPUT_D>)CrLf
Legend: <INPUT_D> contains 4 decimal numbers. Each number represents the state for
the corresponding input port.
The binary representation of the responded decimal numbers is shown below.
Explanation: Input 1 has an analog signal. Input 2 has a connected source but no signal.
Input 3 has a digital signal with HDCP encryption. Input 4 has a DVI signal.
8.9.2. Output port status
Description: Shows the actual status of the output ports.
Command {:OSD}
Response (OSD●<OUTPUT_D>)CrLf
Legend: <OUTPUT_D> contains 4 decimal numbers. Each number represents the state
for the corresponding output port.
The binary representation of the responded decimal numbers is shown below.
Explanation: There are two DVI sinks connected on ports 1 and 3. No other output port
is connected.
Info:
Both Receiver Sense or Hotplug Detect can be used to determine if there is an attached
monitor or other sink device.
8.9.3. All port status
Description: Shows the actual status of all input and output ports.
Command {PS}
Response (PS●<INPUT_D>,
Legend: <INPUT_D> and <OUTPUT_D> is the same as for {:ISD} and {:OSD}
commands. The input and output state tables are separated with a comma ",". See
and
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Format
3. bit (MSB)
analog signal
HDCP active
Source 5V: The connected source sends 5V
Digital signal: Video signal is present on digital input.
HDCP active: Incoming signal is encrypted
Analog signal: Video signal is present on analog input
Format
3. bit (MSB)
0
Receiver Sense: TMDS termination present in connected device
Hotplug Detect: Hotplug signal is presented by the connected device
Format
<OUTPUT_D>)CrLf
8.9.2
for detailed legend.
→ {:isd}
← (ISD 9173)CrLf
2. bit
1. bit
digital signal
→ {:osd}
← (OSD 3030)CrLf
2. bit
1. bit
0
hotplug detect
→ {ps}
← (PS 9173,3030)CrLf
Example
0. bit (LSB)
source 5V
Example
0. bit (LSB)
receiver sense
Example
Section 8. Programmers reference
8.9.1
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