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LEARNING BOARD 2
GND
+5.0V
SCL-USB
SDA-USB
GND
GND
GND
IOVDD
10.0k
R38
0
R33
0
R32
0
R31
0
R30
MCLK
SCLK
LRCLK
SDIN
GND
MCLK
SDIN
SCLK
LRCLK
MCLK-USB
I2S-USB
SDOUT-USB
BCLK-USB
LRCLK-USB
MCLK-USB
SDOUT-USB
BCLK-USB
LRCLK-USB
MCLK-from-LB2
WCLK-from-LB2
SDOUT3-from-LB2
BCLK-from-LB2
SDIN-USB
SDIN-USB
47k
R36
2.2k
R35
GND
47k
R34
2.2k
R37
GND
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
19
21
23
25
27
29
31
16
18
20
22
24
26
28
30
32
33
34
J28
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
GND
+3.3V
GND
1A
1
GND
2
2A
3
2Y
4
VCC
5
1Y
6
U10
SN74LVC2G34DRLR
GND
+3.3V
A
1
B
2
Y
3
GND
4
Y
5
A/B
6
G
7
VCC
8
U9
SN74LVC2G157DCTR
RESET
1
P0
2
P1
3
P2
4
P3
5
GND
6
P4
7
P5
8
P6
9
P7
10
INT
11
SCL
12
SDA
13
VCCP
14
VCCI
15
ADDR
16
U8
TCA6408ARSVR
SDOUT1-from-LB2
SDIN2-to-LB2
GND
GND
I2C
EXPANDER
DECOUPLING
0.1µF
C50
+3.3V
GND
0.1µF
C53
+3.3V
GND
0.1µF
C54
GND
0.1µF
C51
+3.3V
GND
0.1µF
C52
GND
IOVDD
DIR1
15
DIR2
16
A1
1
A2
2
A3
3
A4
4
DIR3
5
DIR4
6
OE
7
GND
8
B4
9
B3
10
B2
11
B1
12
VCCB
13
VCCA
14
U6
SN74AVC4T774RSVR
10.0k
R39
I2S-TAS2555
WCLK-TAS2555
BCLK-TAS2555
MCLK-TAS2555
DOUT-TAS2555
DIN-TAS2555
I2C-USB
USB_I2CEN
USB_I2CEN
DIR1
15
DIR2
16
A1
1
A2
2
A3
3
A4
4
DIR3
5
DIR4
6
OE
7
GND
8
B4
9
B3
10
B2
11
B1
12
VCCB
13
VCCA
14
U11
SN74AVC4T774RSVR
GND
GND
DIN1
BCLK1
WCLK1
IOVDD
+3.3V
LRCLK-to-LB2
BCLK-to-LB2
LRCLK-to-LB2
BCLK-to-LB2
WCLK-from-LB2
BCLK-from-LB2
MCLK-from-LB2
SDIN2-to-LB2
SDOUT1-from-LB2
SDOUT1-from-LB2
SDOUT3-from-LB2
IOVDD
1
2
J26
P1
1
2
J27
P0
S1
2
1B1
6
1B2
5
1A
7
2B4
13
2B3
12
1B4
3
1B3
4
2B1
10
2B2
11
2A
9
GND
8
VCC
16
1OE
1
2OE
15
S0
14
EP
17
U5
SN74CB3Q3253RGYR
S1
2
1B1
6
1B2
5
1A
7
2B4
13
2B3
12
1B4
3
1B3
4
2B1
10
2B2
11
2A
9
GND
8
VCC
16
1OE
1
2OE
15
S0
14
EP
17
U7
SN74CB3Q3253RGYR
10.0k
R43
GND
0.1µF
C55
GND
IOVDD
1
2
3
4
5
U14
SN74LVC1G125DCKR
+3.3V
GND
49.9
R45
SDOUT3-from-LB2
10.0k
R44
+3.3V
MCLKIN-LB2
SDIN0-LB2
BCLKIN-LB2
LRCLKIN-LB2
LRCLK-to-LB2
BCLK-to-LB2
+3.3V
SCL-USB
SDA-USB
I2S
LEARNING
BOARD 2
MCLKIN-LB2
SDIN0-LB2
BCLKIN-LB2
LRCLKIN-LB2
Schematics, PCB Layout, and Bill of Materials
Figure 8. TAS2555EVM Muxes and Translators
13
SLOU411 – August 2015
TAS2555 Evaluation Module
Copyright © 2015, Texas Instruments Incorporated