W81282F Datasheet, PDF (7/18 Pages) Winbond – USB Keyboard Controller with 4 Ports Hub

W81282F
PRELIMINARY
5. PIN DESCRIPTION
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15,16
17
18
19
20
21
22
23
24
25
26
27
Pin Name
VDD3V
VDDA
SO14 (P26)
GNDA
VBUS
SO15 (P27)
LED0#
SI0 (P10)
LED1#
SI1 (P11)
LED2#
SI2 (P12)
LEDOVR#
SI3 (P13)
VDD
SI4 (P14)
N.C.
RESET
INPUT_P
SO16
P33
XINT# (P32)
EESDA/IDSEL1
(P31)
SI5 (P15)
SI6 (P16)
SI7 (P17)
I/O Type
Pin Function
Power1
Power1
IOUD2
Power0
IUD2T
IOUD2
IOU2P
IOUD2
IOU2P
IOUD2
IOU2P
IOUD2
IOU2P
IOUD2
Power1
IOUD2
IOUD2
IUD2T
IOUD2
O2
IOUD2
IOUD2
IOUD2
IOUD2
IOUD2
IOUD2
3.3V Regulator Output. Supplying voltage for all transceivers
Analog power.
Port 2.6 and function of Scan Out line 14.
Analog ground.
Input of upstream power status. On self-power mode, connection
should be controlled by VBUS status.
Port 2.7 and function of Scan Out line 15.
Keyboard NumLock LED driver. To drive LED directly.
Port 1.0 and function of Scan In line 0.
Keyboard CapLock LED driver. To drive LED directly.
Port 1.1 and function of Scan In line 1.
Keboard ScrolLock LED driver. To drive LED directly
Port 1.2 and function of Scan In line 2.
Flag of any downstream port1 over-current. To drive LED directly
Port 1.3 and function of Scan In line 3.
Digital supply voltage.
Port 1.4 and function of Scan In line 4.
No connection. This pin should be floated.
Master reset input. Active high.
A programmable port and reverse for input application.
This pin is function of Scan Out line 16.
Port 3.3 and reverse for input or output application.
Port 3.2. This pin is dedicated for internal use.
Port 3.1 and function of serial data line interfacing with external
EEPROM. If no serial EEPROM present, this pin is used to scan
ID selection and named IDSEL1
Port 1.5 and function of Scan In line 5.
Port 1.6 and function of Scan In line 6.
Port 1.7 and function of Scan In line 7.
Pull
Up/
Down
-
-
U
-
-
U
O
U
O
U
O
U
O
U
-
U
U
-
U
-
U
U
U
U
U
U
Publication Release Date: Aug. 1999
-4-
Revision 0.5