Texas Instruments TAS2770, Руководство пользователя

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FSYNC
SCL
SDA
SDZ
I2S
SDZ
33.0 R2
>
X-SCL
X-SCL
X-SDA
X-BCLK
XMOS
X-BCLK
X-LRCK
X-DOUT
FSYNC
S
1
1B1
2
1B2
3
1A
4
2B1
5
2B2
6
GND
8
3A
9
3B2
10
3B1
11
4A
12
4B2
13
4B1
14
2A
7
OE
15
VCC
16
U17
SN74CB3Q3257DGVR
3.3V
GND
GND
I2C/SHUTDOWN SOURCE SELECT
10.0k
R44
OUT=INTERNAL
IN=EXTERNAL
S
1
1B1
2
1B2
3
1A
4
2B1
5
2B2
6
GND
8
3A
9
3B2
10
3B1
11
4A
12
4B2
13
4B1
14
2A
7
OE
15
VCC
16
U12
SN74CB3Q3257DGVR
3.3V
GND
GND
TDM SOURCE SELECT
>
>
10.0k
R41
GND
OUT=INTERNAL
IN=EXTERNAL
33.0
R38
33.0
R39
33.0
R40
J6
I2C-SEL
3.3V
J2
TDM-SEL
3.3V
GND
X-SDZ
>
>
>
>
>
>
3.3V-1.8V TRANSLATORS (Level Shifters)
FSYNC-XLTR
>
GND
Vcc
SDOUT-XLTR
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
1.8V
GND
SBCLK-XLTR
>
>
>
>
>
>
>
>
SDZ-XTLR
1
2
3
4
5
U18
LVC1G125
1.8V
GND
XMOS
EXT-IN
SBCLK-EXTIN
SCL-EXTIN
SDA-EXTIN
SBCLK-EXTIN
FSYNC-EXTIN
SDIN-EXTIN
FSYNC-EXTIN
SDIN-EXTIN
X-SDZ
>
X-SDA
SCL-EXTIN
EXT-IN
SDA-EXTIN
I2C
I2S
X-LRCK
>
X-DOUT
>
SHUTDOWN
XMOS
>
EXT-IN
SDZ-EXTIN
SDZ-EXTIN
>
SDZ-XTLR
SCL-XLTR
SDA-XLTR
I2C
SHUTDOWN
>
>
> >
TO DUT
EXT-OUT
AND
TO DUT AND
EXT-OUT
TO DUT AND EXT-OUT
>
>
>
1.8V
SCL
SDA
3.3V
GND
SDA_B
1
GND
2
VCCA
3
SDA_A
4
SCL_A
5
OE
6
VCCB
7
SCL_B
8
U15
TCA9406DCUR
10.0k
R43
SCL-XLTR
SDA-XLTR
X-SDZ_CTRL
>
0.1µF
16V
C5
GND
Vcc
SBCLK
33.0 R1 SBCLK
SDIN
33.0 R3 SDIN
GND
0.1µF
16V
C36
GND
0.1µF
16V
C37
1.8V 1.8V
SDZ-CTRL
>
SDZ-CTRL
X-SDZ_CTRL
>
10.0k
R59
3.3V
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Hardware Documentation
11 SLOU495 – December 2017
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Copyright © 2017, Texas Instruments Incorporated
TAS2770 Evaluation Module
ECCN: 3E991
Figure 8. Schematic: Input Multiplexing and Level Shift