Texas Instruments PCM1802EVM, Руководство пользователя, Страница: 8 / 20

8.1 Schematic
Figure 8-1 and Figure 8-2 illustrate the EVM schematics for the PCM1802EVM and PCM1803AEVM, respectively.
47.0
R13
GND GND GND GND
GND
GND
GND
GND
GND
GND
10uF
16V
C16
GND GND GND GND GND
+5V +3.3V
+3.3V +5V
+3.3V
+3.3V
LRCK
GND
GND
GND
GND
CLOCK SOURCE HEADERS
POWER
GND GND
GND
+3.3V
GND
1
2 3
J4
CONTROLLER
1 2
Y1
1
2
J7
1
2
J5
0.1uF
50V
C2
+5V
GND
SCKI
SCK_IN
SCKI
GND
GND GND
CLOCK GENERATOR
1.0M
R8
0
R10
PCM1802EVMDC167A
Main Schematics
INTERFACE
MODE [0]
MODE [1]
INTERFACE
EXTERNAL
+5V INPUT
DOUT
BCK
0.1uF
16V
C17
1
2
J17
Green
1 2
D1
442
R1
GND
+3.3V
Power Ready
POWER LED
LRCK
BCK
DOUT
SCK_IN
0.1uF
50V
C4
0.1uF
50V
C13
SN74LVC1GX04DCKR
NC
1
GND
2
Y
6
X1
3
X2
4
VCC
5
U2
47.0
R20
47.0
R14
47.0
R2
10uF
16V
C18
0.1uF
16V
C19
1
2
3
J3
1
2
3
J6
0.1uF
16V
C9
GND
GND
100
R6
100
R3
1
2
3
J9
1
2
3
J8
1
2
3
J15
1
2
3
J18
10.0k
R4
10.0k
R5
10 F µ
16V
C1
10 F µ
16V
C3
10 F
µ
16V
C12
PDWN
7
BCK
11
BYPAS
8
FMT0
17
FMT1
18
FSYNC
9
LRCK
10
OSR
16
SCKI
15
VCC
5
VDD
14
VINL
1
VINR
2
VREF1
3
VREF2
4
AGND
6
DGND
13
DOUT
12
MODE0
19
MODE1
20
PCM1802DBR
U1
GND GND
0.1uF
50V
C15
10 F
µ
16V
C14
FSYNC
47.0
R9
+3.3V
FORMAT [1]
SELECTION
1 2 3
J10
GND
10.0k
R15
+3.3V
1 2 3
J11
GND
10.0k
R16
+3.3V
1 2 3
J12
GND
10.0k
R17
OVERSAMPLE
SELECTION
RATIO
+3.3V
1 2 3
J13
GND
10.0k
R18
HPF BYPASS
SELECTION
CONTROL
+3.3V
1 2 3
J14
GND
10.0k
R19
POWER DOWN
CONTROL FORMAT [0]
SELECTION
SELECTION
SELECTION
GND
FSYNC
1
2
3
J16
(SCKI SOURCE)
FORMAT
NUMBER
FM T1 FM T0 FORMAT
0 0 0 Left-justified, 24-bit
1 0 1 I 2 S, 24-bit
2 1 0 Right-justified, 24-bit
3 1 1 Right-justified, 20-bit
VINL
VINR
VREF1
VREF2
SCKI_pin
BCK_pin
LRCK_pin
FMT0
FMT1
OSR
BYPAS
nPDWN
Pin_9
DOUT_pin
MODE0
MODE1
OSR OVERSAMPLING RATIO
0 x64
1 x128 (f < 50 kHz)
S
BPYAS HIGH-PASS FILTER (HPF) MODE
0 Normal (no DC component on DOUT)
mode
1 Bypass (DC component on DOUT)
mode
nPWDN M ODE
0 Power-down mode
1 Normal operation mode
0
R12 VCC/+5V
TP10
GND GND
TP11
GND GND
OSCOPE GND CLIP BAR
4.7µF
16V
C7
4.7µF
16V
C5
25V
0.01uF
C6
25V
0.01uF
C8
M ODE1 M ODE0 INTERFACE M ODE
0 0 Peripheral Mode (256 f
S
, 384 f
S
, 512 f
S
, 768 f
S
)
0 1 Controller Mode (512 f
S
)
1 0 Controller Mode (384 f
S
)
1 1 Controller Mode (256 f
S
)
OR PERIPHERAL
SELECTION
TP3
INL
TP6
VREF1
TP7
VREF2
TP1
VCC/+5V
TP4
INR
TP9
GND
TP2
GND
0
R11
GND
10.0k
R7
+3.3V
TP5
Pin_9
GND
S
CK
_
OS
C
50V
33pF
C10
50V
33pF
C11
J1 J2
VDD/+3.3V
VCC/+5V
TP8
+3.3V
IN
1
GND
2
EN
3
NR/FB
4
OUT
5
TPS73601DBVR
U3
52.3k
R21
30.1k
R22
Figure 8-1. PCM1802EVM (DC167-001) Main Schematic Page
Schematic and Bill of Materials www.ti.com
8 PCM1802EVM and PCM1803AEVM Evaluation Module SBAU384 – JULY 2021
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