W81181D Datasheet, PDF (8/18 Pages) Winbond – USB HUB CONTROLLER

Preliminary W81181D/AD
5. PIN DESCRIPTION
W81181D
PIN
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PAD
NAME
VDD3V
VDDA
GNDA
VBUS
LEDOC4_
LEDOC3_
LEDOC2_
LEDOC1_
VDD
RESET
P3[3]/
INT1_
P1[0]/
SACK/
INDIV
P1[1]/
SSTB
LEDEN5_
LEDEN4_
LEDEN3_
LEDEN2_
LEDEN1_
GND
XTAL1
I/O TYPE
Power1
Power1
Power0
IUD2T
IOU2P
IOU2P
IOU2P
IOU2P
Power1
IUD2T
IOUD2
IOUD2
IOUD2
IOU2P
IOU2P
IOU2P
IOU2P
IOU2P
Power0
OSCM
PIN FUNCTION
3.3V Regulator output. Supply voltage for all
transceivers.
Analog power.
Analog ground.
Input of upstream power status. On self-power mode,
connection should be controlled by VBUS status.
Flag of port4 over-current. To drive LED directly
Flag of port3 over-current. To drive LED directly
Flag of port2 over-current. To drive LED directly
Flag of port1 over-current. To drive LED directly
Digital supply voltage.
Master reset input. Active high.
Normally, this pin is P33/INT1_ and used as bi-
directional serial data (SDATA) for embedded function
serial port.
Normally, this pin is P10 and used as bi-directional
serial data ACK (SACK) for embedded function serial
port. If no embedded function this pin is INDIVIDUAL
(default) or GANGED mode setting for downstream
power control.
Normally, this pin is P11 and used as bi-directional
serial data Strobe (SSTB) for embedded function
serial port.
Downstream port5 LED. Active low to drive
bright/blinking LED when port5 enable.
Downstream port4 LED. Active low to drive
bright/blinking LED when port4 enable.
Downstream port3 LED. Active low to drive
bright/blinking LED when port3 enable.
Downstream port2 LED. Active low to drive
bright/blinking LED when port2 enable.
Downstream port1 LED. Active low to drive
bright/blinking LED when port1 enable.
Digital ground
Crystal IN. For 12 MHz oscillation.
PULL UP/
DOWN
-
-
-
-
O
O
O
O
-
-
U
U
U
O
O
O
O
O
-
-
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