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and format. Some of the blocks might be missing depending on the actual signal –
e.g. if the port operates in DVI mode then no audio information will be sent.
Example:
→ {:HDMIIGET12}
← (STI12=S1110;V1920x1080p50,270,1;A1C010600;I11112;P2C;)CrLf
The exact meanings of different blocks are explained in the following sections.
4.5.5.1. Signal info block
Format: Sabcd
The signal info block contains some general information about the
signal. The first character is 'S'. After that the characters have different
meanings:
a:
0 – There is no PWR5V signal on this input
1 – PWR5V signal is present
b:
0 – There is no valid video signal on this input
1 – Active video signal is present (SCDT present)
c:
0 – This port operates in DVI mode
1 – This port operates in HDMI 24 bpp mode
2 – This port operates in HDMI 30 bpp mode (deep color)
3 – This port operates in HDMI 36 bpp mode (deep color)
d:
0 – HDCP encryption is disabled
1 – HDCP encryption is active on this port
Example:
Legend:
4.5.5.2. Video info block
This block determines the resolution, the refresh rate, the scan mode
(progressive or interlaced) and the color space.
The first character of this block is 'V', after that are the horizontal and
the vertical resolutions in pixel units separated by an 'x' symbol. The
next character is 'p' or 'i' depending on the scan mode.
The next number is the vertical refresh rate in Hz rounded to the nearest
integer. The next number is separated by comma and it is the actual
frequency of the horizontal sync signal in kHz units.
The next value determines the actual color
space; the possible values are shown in the
table. Other values are reserved and may be
used in the future version of this protocol.
Example: V1920x1080p50,270,10;
MX32x32DVI-HDCP-Pro and HDMI-Pro
S1110;
24bpp HDMI signal is sent without HDCP encryption.
User's Manual v1.0
Colorspace
00
RGB444
10
YUV422
20
YUV444
Page 57/ 109
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