Preliminary W81181D/AD
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5. PIN DESCRIPTION
W81181D
PIN
NUMBER
PAD
NAME
I/O TYPE
PIN FUNCTION
PULL UP/
DOWN
1
VDD3V
Power1
3.3V Regulator output. Supply voltage for all
transceivers.
-
2
VDDA
Power1
Analog power.
-
3
GNDA
Power0
Analog ground.
-
4
VBUS
IUD2T
Input of upstream power status. On self-power mode,
connection should be controlled by VBUS status.
-
5
LEDOC4_
IOU2P
Flag of port4 over-current. To drive LED directly
O
6
LEDOC3_
IOU2P
Flag of port3 over-current. To drive LED directly
O
7
LEDOC2_
IOU2P
Flag of port2 over-current. To drive LED directly
O
8
LEDOC1_
IOU2P
Flag of port1 over-current. To drive LED directly
O
9
VDD
Power1
Digital supply voltage.
-
10
RESET
IUD2T
Master reset input. Active high.
-
11
P3[3]/
INT1_
IOUD2
Normally, this pin is P33/INT1_ and used as bi-
directional serial data (SDATA) for embedded function
serial port.
U
12
P1[0]/
SACK/
INDIV
IOUD2
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.
U
13
P1[1]/
SSTB
IOUD2
Normally, this pin is P11 and used as bi-directional
serial data Strobe (SSTB) for embedded function
serial port.
U
14
LEDEN5_
IOU2P
Downstream port5 LED. Active low to drive
bright/blinking LED when port5 enable.
O
15
LEDEN4_
IOU2P
Downstream port4 LED. Active low to drive
bright/blinking LED when port4 enable.
O
16
LEDEN3_
IOU2P
Downstream port3 LED. Active low to drive
bright/blinking LED when port3 enable.
O
17
LEDEN2_
IOU2P
Downstream port2 LED. Active low to drive
bright/blinking LED when port2 enable.
O
18
LEDEN1_
IOU2P
Downstream port1 LED. Active low to drive
bright/blinking LED when port1 enable.
O
19
GND
Power0
Digital ground
-
20
XTAL1
OSCM
Crystal IN. For 12 MHz oscillation.
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