w681308 Winbond Electronics Corp America, w681308 Datasheet - Page 10

• Manufacturer Part Number: w681308
• Description: Usb Audio Controller
• Manufacturer: Winbond Electronics Corp America

NOTE: All GPIO pins modes are controlled by register settings.
KY4/GPIO 24
KY3/GPIO 23
KY2/GPIO 22
KY1/GPIO 21
KY0/GPIO 20
KX4/GPIO 19
KX3/GPIO 18
KX2/GPIO 17
KX1/GPIO 16
KX0/GPIO 15
TDO/GPIO 2
Pin Name
VREF2
VREF1
AGND
AGND
RGND
EARN
AVDD
EARP
REGL
JTAG
MCO
MCP
VPP
SPN
SPP
Pin
No
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
State in
Pull-H
Pull-H
Pull-H
Pull-H
Pull-H
Reset
Pull-L
Pull-L
Pull-L
Pull-L
Pull-L
Pull-L
Pull-L
JTAG Data Output / GPIO 2
Reset signal for digital core. Tie this pin to 6.75V for
programming the OTP ROM
Analog ground supply voltage
Speaker1 negative connection
Speaker2 negative connection
Analog supply voltage
Speaker2 positive connection
Speaker1 positive connection
Analog ground supply voltage
Low noise ADC and DAC reference
The microphone amplifier output
Microphone positive connection
Voltage reference
Voltage reference
Linear regulator base control output
Keypad row Y4 connection /GPIO 24
Keypad row Y3 connection /GPIO 23
Keypad row Y2 connection /GPIO 22
Keypad row Y1 connection /GPIO 21
Keypad row Y0 connection /GPIO 20
Keypad column X4 connection /GPIO 19
Keypad column X3 connection /GPIO 18
Keypad column X2 connection /GPIO 17
Keypad column X1 connection /GPIO 16
Keypad column X0 connection /GPIO 15
Tie to DGND for normal operation. Tie to DVDD to
enable JTAG function.
Table 1 Pin Description
XXXX PRODUCT DESCRIPTION
10
Functionality
D
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D
D
Pin Type
W681308
Rev1.2
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
P
P
O
O
P
O
O
P
P
G
O
O
O
O
I
Strength
Driver
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
2 mA
—
—
—
—
—
—
—
—
—
—
—
—
—
—