Cirrus-logic CS5374 Manual de usuario descargar pdf (Pagina 36)

CS5374

9.2 AMP1CFG: 0x01

(MSB)7654321(LSB)0

PWDN1 HP1 MUX1_1 MUX1_0 GUARD GAIN1_2 GAIN1_1 GAIN1_0

R/W R/W R/W R/W R/W R/W R/W R/W

00000000

Figure 21. Amplifier 1 Configuration Register AMP1CFG

Bit definitions:

7 PWDN1 Amplifier 1 Power Down

1: enable

0: disable

6 HP1 Amplifier 1 High Precision

1: enable

0: disable

5:4 MUX1[1:0] Input Multiplexer

11: INA1 + INB1

10: INA1 only

01: INB1 only

00: 800 ohm termination

3 GUARD GUARD Output

1: disable

0: enable

2:0 GAIN1[2:0] Amplifier 1 Gain

111: reserved

110: 64x

101: 32x

100: 16x

011: 8x

010: 4x

001: 2x

000: 1x

Address: 0x01

-- Not defined

(read as 0)

R Readable

WWritable

R/W Readable

and Writable

Bits in bottom rows

are reset condition

Reset Condition : 0000_0000 (0x00) : Default value

Normal Operation : 00MM_GGGG : MUX, GUARD and GAIN select

Power Down Operation : 1000_0000 (0x80) : PWDN enabled

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 42 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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Cirrus-logic CS5374 Manual de usuario Pagina 36

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