TMDS361
SLLS919–DECEMBER 2008............................................................................................................................................................................................ www.ti.com
Table 1. Source Selection Lookup(1)
CONTROL PINS
I/O SELECTED
HOT-PLUG DETECT STATUS
Power Mode
SCL_SINK
SDA_SINK
S2
S1
Port Selected
HPD1
HPD2
HPD3
Port 1
Terminations of
port 2 and port 3
are disconnected.
SCL1
SDA1
H
H
HPD_SINK
L
L
Normal mode
Normal mode
Normal mode
Port 2
Terminations of
port 1 and port 3
are disconnected.
SCL2
SDA2
H
L
L
L
L
L
HPD_SINK
L
L
Port 3
Terminations of
port 1 and port 2
are disconnected.
SCL3
SDA3
HPD_SINK
None (Z)
Are pulled HIGH
by external
pullup
None (Z)
All terminations are
disconnected.
L
H
HPD_SINK
HPD_SINK
HPD_SINK
Standby mode
termination
(1) H: Logic high; L: Logic low; X: Don't care; Z: High impedance
6
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