alc268 Realtek Semiconductor Corporation, alc268 Datasheet - Page 17

• Manufacturer Part Number: alc268
• Description: 2+2 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

6.2. Analog I/O Pins
2+2 Channel High Definition Audio Codec
Name
MIC2-L
MIC2-R
CD-L
CD-G
CD-R
MIC1-L
MIC1-R
LINE1-L
LINE1-R
PCBEEP
LINE-OUT-L
LINE-OUT-R
HP-OUT-L
HP-OUT-R
MONO-OUT
Sense A
Sense B
GPIO1
GPIO2
Total
Type
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
O
I
I
I
I
I
I
-
ALC268/-VB1
(LQFP-48)
Pin No.
18 pins
12 pin
16
17
18
19
20
21
22
23
24
35
36
39
41
37
13
34
31
-
Table 2.
ALC268Q
(QFN-48)
Pin No.
19 pins
12 pin
16
17
18
19
20
21
22
23
24
35
36
39
41
32
13
34
31
30
Analog I/O Pins
Description
2
Channel
2
Right Channel
CD Input Left Channel
CD Input Reference Ground
CD Input Right Channel
1
Channel
1
Right Channel
1
1
External PCBEEP Input
Line Output Left Channel
Line Output Right Channel
Headphone Out Left Channel
Headphone Out Right Channel
MONO Output
Jack Detect Pin L
Jack Detect Pin 2
General Purpose Input/Output 1
General Purpose Input/Output 2
-
nd
nd
st
st
st
st
9
Stereo Microphone Input Left
Stereo Microphone Input
Line Input Left Channel
Line Input Right Channel
Stereo Microphone Input Left
Stereo Microphone Input
Track ID: JATR-1076-21
Characteristic Definition
Analog output (PORT–D)
Analog input/output,
default is input (PORT–F)
Analog input/output,
default is input (PORT–F)
Analog input, 1.6Vrms of
full-scale input
Analog input, 1.6Vrms of
full-scale input
Analog input, 1.6Vrms of
full-scale input
Analog input/output,
default is input (PORT–B)
Analog input/output,
default is input (PORT–B)
Analog input/output,
default is input (PORT–C)
Analog input/output,
default is input (PORT–C)
Analog input, 1.6Vrms of
full-scale input
Analog output (PORT–D)
Analog output (PORT–A)
Analog output (PORT–A)
Analog mono output is
summation of (L+R)/2
Resistor {5.1K, 10K, 20K,
39.2K} w/ 1% accuracy
Resistor {5.1K, 10K, 20K,
39.2K} w/ 1% accuracy
Input Vt=(2/3)*AVDD,
output V
V
pulled up by 50KΩ
Input Vt=(2/3)*AVDD,
output V
V
pulled up by 50KΩ
-
OL
OL
=AVSS, internal
=AVSS, internal
ALC268 Series
OH
OH
=AVDD,
=AVDD,
Datasheet
Rev. 1.3