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Command and Response Table for SIS Commands
Command ASCII Command
(host to unit)
Response
(unit to host)
Additional Description
Video Mute
Video mute single output
X!*X@B VmtX!*X@] Video mute output X! (1 or 2)
Video mute all outputs
X@B VmtX@]
Video mute all outputs
Query Video mute status
B
Vmt
X@•X@] output 1 status, output 2 status
X@ = 0 (mute disabled)
or 1 (mute enabled)
Audio Mute
Audio mute single output
X!*X@Z AmtX!*X@] Audio mute output X! (1 or 2)only
Audio mute all outputs
X@Z AmtX@]
Audio mute all outputs
Query Audio mute status
Z
Amt
X@•X@] X@ = 0 (mute disabled)
or 1 (mute enabled)
Video Color Bit Depth
Set video bit depth for a
specific input
EVX!*X#BITD} X!BitdVX#] X# = 0 (auto, based on sink EDID)
1 (force 8‑bit)
2 (pass‑through, unmodified)
Set video bit depth for all
inputs
EV*X#BITD} BitdVX#]
View video bit depth for
all inputs
EV*BITD} BitdVX#•X#]
video bit depth for output 1•video
bit depth for output 2
Signal Status
Request all signal status
ELS} SigX@*X@•X@] Shows the signal status (X@) for the
input*output1•output2.
X@ = 0 (signal undetected)
or 1 (signal detected)
Request all HDCP status
EHDCP} HdcpX@*X@•X@] X@ = 0 (HDCP off) or 1 (HDCP on)
EDID Minder
Assign EDID to input
EA*X$EDID} EdidAX$] X$ = EDID memory location (1‑54)
see table 1 on page 13
View EDID assignment
EA*EDID} X$]
Save EDID of output to
user location
ESX!*X$EDID} X!EdidSX$] Store the EDID of output X! into
EDID memory location X$
View/Read EDID in Hex
ER*EDID} X%]
Read out EDID in Hex from
currently selected EDID
View EDID native
resolution
EN*EDID} X^]
Resolution and refresh rate of
currently selected EDID
Example: 1600x1200@60Hz
HDMIDA2 • SIS Commands 17