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SOURCE SELECTION LOOKUP TABLE
CONTROL PINS
I/O SELECTED
HOT PLUG DETECT STATUS
HPD_SINK S1
S2
Y/Z
SCL_SINK
SDA_SINK
HPD1
HPD2
HPD3
H H
H
A1/B1
Terminations of A2/B2
and A3/B3 are
disconnected
SCL1
SDA1
H L L
H L
H
A2/B2
Terminations of A1/B1
and A3/B3 are
disconnected
SCL2
SDA2
L H L
H L
L
A3/B3
Terminations of A1/B1
and A2/B2 are
disconnected
SCL3
SDA3
L L H
H H
L
None (Z)
All terminations are
disconnected
None (Z)
Are pulled HIGH by
external pull-up
termination
H H H
L H
H
Disallowed
(indeterminate)State
All terminations are
disconnected
SCL1
SDA1
L L L
L L
H
Disallowed
(indeterminate)State
All terminations are
disconnected
SCL2
SDA2
L L L
L L
L
Disallowed
(indeterminate)State
All terminations are
disconnected
SCL3
SDA3
L L L
L H
L
None (Z)
All terminations are
disconnected
None (Z)
Are pulled HIGH by
external pull-up
termination
L L L
(1)H: Logic high; L: Logic low; X: Don't care; Z: High impedance
