Cirrus Logic CS4349 - Manual (Page 3)

DS782F2 3
CS4349
TABLE OF CONTENTS
1 PIN DESCRIPTION................................................................................................................................... 6
2 CHARACTERISTICS AND SPECIFICATIONS........................................................................................ 8
2.1 Recommended Operating Conditions ............................................................................................. 8
2.2 Absolute Maximum Ratings............................................................................................................. 8
2.3 DAC Analog Characteristics - Commercial (-CZZ) .......................................................................... 9
2.4 DAC Analog Characteristics - Automotive (-DZZ) ......................................................................... 10
2.5 Combined Interpolation and On-Chip Analog Filter Response...................................................... 12
2.6 Switching Specifications - Serial Audio Interface........................................................................... 13
2.7 Switching Characteristics - Control Port - I²C Format.................................................................... 14
2.8 Switching Characteristics - Control Port - SPI Format................................................................... 15
2.9 Digital Characteristics .................................................................................................................... 16
2.10 Power and Thermal Characteristics............................................................................................. 16
3 TYPICAL CONNECTION DIAGRAM ................................................................................................... 17
4 APPLICATIONS ..................................................................................................................................... 18
4.1 Sample Rate Range and Oversampling Mode Detect................................................................... 18
4.1.1 Sample Rate Auto-Detect .................................................................................................... 18
4.2 System Clocking ............................................................................................................................ 18
4.3 Digital Interface Format ................................................................................................................. 19
4.3.1 Time-Division Multiplex (TDM) Mode ................................................................................... 20
4.4 De-Emphasis ................................................................................................................................. 21
4.5 Mute Control .................................................................................................................................. 21
4.6 Recommended Power-Up Sequence ............................................................................................ 21
4.6.1 Stand-Alone Mode ............................................................................................................... 21
4.6.2 Control Port Mode ................................................................................................................ 22
4.7 Popguard Transient Control .......................................................................................................... 22
4.7.1 Power-Up ............................................................................................................................. 22
4.7.2 Power-Down......................................................................................................................... 22
4.7.3 Discharge Time .................................................................................................................... 22
4.8 Analog Output and Filtering........................................................................................................... 23
4.9 Grounding and Power Supply Arrangements ................................................................................ 23
4.9.1 Capacitor Placement............................................................................................................ 23
5 STAND-ALONE OPERATION................................................................................................................ 24
5.1 Serial Port Format Selection.......................................................................................................... 24
5.2 De-Emphasis Control .................................................................................................................... 24
5.3 Popguard Transient Control .......................................................................................................... 24
6 CONTROL PORT OPERATION ............................................................................................................. 25
6.1 MAP Auto Increment ..................................................................................................................... 25
6.2 I²C Mode........................................................................................................................................ 25
6.2.1 I²C Write ............................................................................................................................... 25
6.2.2 I²C Read............................................................................................................................... 25
6.3 SPI Mode ....................................................................................................................................... 26
6.3.1 SPI Write .............................................................................................................................. 26
6.3.2 SPI Read.............................................................................................................................. 27
6.4 Memory Address Pointer (MAP) ................................................................................................... 27
6.4.1 INCR (Auto Map Increment Enable) .................................................................................... 27
6.4.2 MAP (Memory Address Pointer) .......................................................................................... 27
7 REGISTER QUICK REFERENCE .......................................................................................................... 28
8 REGISTER DESCRIPTION .................................................................................................................... 29
8.1 Device and Revision ID - Register 01h.......................................................................................... 29
8.2 Mode Control - Register 02h ......................................................................................................... 29
8.2.1 Digital Interface Format (DIF[2:0]) Bits 6-4 .......................................................................... 29
8.2.2 De-Emphasis Control (DEM[1:0]) Bits 3-2 ........................................................................... 30