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Cirrus-logic CS5374 User Manual Page 15
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Table of contents
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CS5374
CS5374
15
Figure 11. CS
5374 Conn
ection Diag
ram
A
INA1+
INA
1-
MUX1
MUX2
INB
1-
INB1+
GU
AR
D1
+
-
-
+
400
Ω
400
Ω
INB
2+
INB2-
INA2-
INA
2+
+
-
-
+
400
Ω
4
00
Ω
Rese
t
, Cloc
k
,
and
Sy
nc
hr
oniz
ation
INR
1-
VA+
MFL
AG
1
MDAT
A
1
MCLK
MSYNC
MFL
AG
2
MDAT
A
2
GAI
N1
GA
IN2
GUA
RD2
INR2-
INR
2+
4
th
Ord
er
ΔΣ
Mod
ula
to
r
4
th
Ord
er
ΔΣ
Mod
ula
to
r
INF1
-
INF1+
INR1+
RST
SPI
TM
Seri
al
Comm
unicatio
ns
Interface
SDI
SDO
SCL
K
CS
INF2+
INF2
-
OUT
2
-
OU
T2
+
OU
T
1+
OUT1-
CS5374
VA-
GN
D
VD+
VREF-
VREF+
VA+
VA-
Hy
dr
ophone
Se
ns
or
Hy
dr
ophone
Se
ns
or
VA-
0.
1
VA+
0.1
μ
F
μ
F
Tes
t
DAC
CS4373
A
0.
0
2
C0G
0.
0
2
C0 G
680
680
680
680
μ
F
μ
Ω
Ω
Ω
Ω
F
0.02
C0G
0.02
C0G
680
680
680
680
μ
F
μ
Ω
Ω
Ω
F
Ω
VA-
0.1
VA+
0.
1
μ
F
μ
F
0.01
μ
F
2.5V
Prec
ision
Voltage
Reference
To CS53
76A
Di
gi
t
al
Cont
rol
Figure 12. CS5374 to CS5376A Digita
l Interface
Reset
, Clo
ck
, and
S
ync
hr
oni
z
a
tion
MFLA
G
1
MDAT
A
1
MCL
K
MSYN
C
MFLA
G
2
MDAT
A
2
4
th
Ord
e
r
ΔΣ
Mod
u
la
to
r
4
th
Ord
e
r
ΔΣ
Mod
u
la
to
r
RST
SPI
TM
Seri
al
Com
m
uni
c
ati
ons
Int
erface
SDI
SDO
SCL
K
CS
CS
5374
MSYN
C
MCL
K
Clo
ck an
d
S
ync
hr
oniz
ation
Modul
a
tor
Da
ta
Int
erface
SPI 2
Seri
al
Peri
p
h
era
l
Int erface 2
RESET
MFLA
G
1
MDAT
A
1
MFLA
G
2
MDAT
A
2
SI1
SO
SCK2
CS0
CS5376
A
EXT
ERN
A
L
R
ESET
CONTRO
LLER
1
2
...
10
11
12
13
14
15
16
17
18
19
20
...
43
44
Modulator
1
TABLE OF CONTENTS
2
LIST OF FIGURES
3
LIST OF TABLES
3
ABSOLUTE MAXIMUM RATINGS
4
THERMAL CHARACTERISTICS
5
ANALOG CHARACTERISTICS
5
MODULATOR
6
AMPLIFIER
6
PERFORMANCE SPECIFICATIONS
7
CHANNEL PERFORMANCE PLOTS
9
DIGITAL CHARACTERISTICS
10
(Note 25)MDAT
11
MSB MSB - 1 LSB
12
POWER SUPPLY CHARACTERISTICS
13
2. GENERAL DESCRIPTION
14
shows connection dia
14
3. AMPLIFIER OPERATION
16
3.3 Differential Signals
17
4. MODULATOR OPERATION
18
4.3.1 Modulator One’s Density
19
4.3.2 Decimated 24-bit Output
19
SERIAL PORT
21
SPI2CMD[15:8] SPI2CMD[7:0]
22
SPI2DAT[23:16]
22
5.3 SPI Registers
23
SPI Write Transactions
24
SPI Read Transactions
24
GPIO Register
25
SPI2 Registers
25
6. POWER MODES
29
± as a differential pair
30
7.5 VREF Accuracy
31
± pins, and all CS5374
31
8. POWER SUPPLIES
32
8.4 PCB Layers and Routing
33
8.5 Power Supply Rejection
33
8.7 DC-DC Converters
33
REGISTER SUMMARY
34
(MSB)7654321(LSB)0
35
RRRRRRRR
35
01000001
35
00000000
36
10. PIN DESCRIPTIONS
40
11. PACKAGE DIMENSIONS
42
48-PIN QFN (7MM X 7MM)
42
12. ORDERING INFORMATION
43
14. REVISION HISTORY
44
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