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24
E
DID MANAGEMEN
T
E
xternal EDID Mana
g
emen
t
The 8x8
C
rosspoint Matrix
f
or HDMI 1.3
f
eatures EDID Mana
g
ement. Be
f
ore
the source can send video or audio si
g
nals, the source device reads the EDID
(
Extended Displa
y
Identi
fi
cation Data
)
f
rom the output devices connected to the
S
plitter. The EDID contains in
f
ormation about what t
y
pe o
f
A
/
V data that the
s
ource can send to each output device.
The 8x8
C
rosspoint Matrix
f
or HDMI 1.3 routes multiple sources to multiple
output devices. This involves readin
g
EDID data
f
rom more than one device.
M
ana
g
ement o
f
the EDID data is important to maintain compatibilit
y
between all
de
vi
ces
.
T
he followin
g
EDID features are copied from Output A
:
•
S
upported Resolutions
• 3D
S
uppor
t
•A
ud
i
o
F
ea
t
u
r
es
D
ispla
y
Connections
:
•I
f
a device is not connected to
O
utput A, then no EDID chan
g
es are made,
m
eanin
g
that the previous EDID in
f
ormation will be used. This state will be
in e
ff
ect until a displa
y
is connected to
O
utput A and the Matrix is power-
cy
cled.
• EDID is built
f
rom
O
utput A to the Input. The audio block will be copied
f
rom
O
utput A. EDID-cop
y
in
g
is per
f
ormed onl
y
when the Matrix is reset or
p
ower-c
y
cled.