W81181D Datasheet, PDF (9/18 Pages) Winbond – USB HUB CONTROLLER

Preliminary W81181D/AD
Pin Description ( W81181D ), continued
PIN
NUMBER
PAD NAME
I/O
TYPE
21
XTAL2
OSCM
22
VDD
Power1
23
EXTPUEN
O2
24
OCP4_
IUD2T
25
PWEN4_
O2
26
OCP3_
IUD2T
27
PWEN3_
O2
28
LEDEN0_
IOU2P
29
OCP2_
IUD2T
30
PWEN2_
O2
31
GND
Power0
32
OCP1_
IUD2T
33
PWEN1_
O2
34
FWKP5
IUD2
35
P1[2]/
IOUD2
FSUSP5/
PWRDET
36
GND3V
Power0
37
DP4
AIO
38
DM4
AIO
39
DP3
AIO
40
DM3
AIO
41
GND3V
Power0
42
DP2
AIO
43
DM2
AIO
44
DP1
AIO
45
DM1
AIO
46
GND3V
Power0
47
DP0
AIO
48
DM0
AIO
PIN FUNCTION
Crystal OUT. For 12 MHz oscillation.
Digital supply voltage.
External pull-up connection control.
Downstream port4 over-current status. Active low.
Downstream port4 power control. Active low.
Downstream port3 over-current status. Active low.
Downstream port3 power control. Active low.
Upstream port0 LED. Active low to drive
bright/blinking LED when upstream port0 enable.
Downstream port2 over-current status. Active low.
Downstream port2 power control. Active low.
Digital ground.
Downstream port1 over-current LED. Active low.
Downstream port1 power control. Active low.
Embedded function wake-up input.
Normally, this pin is a P12 and used as embedded
function suspend control. If no embedded function
this pin is self-powered (High) or bus-powered
(Low) hub setting.
Ground of port3 and port4 transceivers.
USB D+ for downstream port4.
USB D- for downstream port4.
USB D+ for downstream port3.
USB D- for downstream port3.
Ground of port1 and port2 transceivers.
USB D+ for downstream port2.
USB D- for downstream port2.
USB D+ for downstream port1.
USB D- for downstream port1.
Ground of port0 transceivers.
USB D+ for upstream port0.
USB D- for upstream port0.
PULL UP/
DOWN
-
O
-
O
-
O
O
-
O
-
O
D
-
-
-
-
-
-
-
-
-
-
-
-
-
Publication Release Date: October 1999
-9-
Revision A1