HD3SS2521 Datasheet, PDF (8/18 Pages) Texas Instruments – DockPort Controller

HD3SS2521
SLAS941A – APRIL 2013 – REVISED MAY 2013
PIN FUNCTIONS (continued)
PIN I/O
26
O
27
O
34
O
I
32
O
30
I/O
33 GND
39
53
24
NC
31
49
50
51
54
55
56
1 Supply
4
13
14
40
52
PIN NAME
DockPort HOST
(SIGNAL MUX)
DockPort DEVICE
(SIGNAL DE-MUX)
CONFIG_PU#
VCTRL_SEL2
Dongle_PWREN#
VCTRL_SEL3
RSVD
(SS_OE#_OUT)
PUSH_BUTTON
HS_OE#_OUT
RST
GND
Connect to FET switch to control pull-up —
option on DisplayPort
CONFIG1/CONFIG2 for DockPort
communication.
—
Power enable for 12 V power
delivery
Power enable for 5 V DockPort dongle —
power circuitry
—
Power enable for 19 V power
delivery
N/C
—
For future compatibility (Connect to
RSVD [SS_OE#_IN] signal - Pin 8)
—
External 5.6 kΩPull-up required.
Push button input to DockPort hub
and MST HUB for 2-lane/4-lane
switching
DisplayPort / High-speed USB Mux Enable. (Connect to HS_OE#_IN - Pin 9)
An external 10 kΩ Pull-down to ground is required.
Reset
Connect to Supply Ground
NC
No Connect
VCC
3.3V Positive power supply voltage
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SIGNAL
SPEED
(MAX)
8
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