NAU8315 Datasheet Rev1.5

Page 5 of 43

Mar 30, 2020

1.1

List of Figures

Figure 1

Pin Configuration of WLCSP12 NAU8315 (TOP VIEW).......................................................................7

Figure 2

Pin Configuration of WLCSP9 NAU8315 (TOP VIEW).........................................................................8

Figure 3

Pin Configuration of QFN20 NAU8315.................................................................................................9

Figure 4

NAU8315 Simplified System Diagram................................................................................................11

Figure 5

NAU8315 Block Diagram ...................................................................................................................12

Figure 6

NAU8315 Power Up & Down Sequence ............................................................................................23

Figure 7

NAU8315 Clock Detection Circuit ......................................................................................................24

Figure 8

PWRUPEN startup sequence. ...........................................................................................................25

Figure 9

ALC Control Loop Block Diagram ......................................................................................................28

Figure 10

NAU8315 Speaker Connections without Filter ...................................................................................31

Figure 11

NAU8315 Speaker Connections with Ferrite Bead Filters..................................................................32

Figure 12

NAU8315 Speaker Connections with LC Filters.................................................................................32

Figure 13

NAU8315 Speaker Connections with Low-Pass Filters......................................................................32

Figure 14

I2S Audio Data...................................................................................................................................34

Figure 15

PCM Time Slot Audio Data ................................................................................................................35

Figure 16

I2S Audio Interface.............................................................................................................................35

Figure 17

PCM Audio Interface ..........................................................................................................................36

1.2

List of Tables

Table 1

Pin Descriptions for the NAU8315.......................................................................................................10

Table 2

GAIN Configurations for the NAU8315 ................................................................................................20

Table 3

Audio Interface Configurations for the NAU8315.................................................................................21

Table 4

Range of Input Clocks .........................................................................................................................25

Table 5

BCLK/FS ratios and Over Sampling Rates..........................................................................................26

Table 6

Ranges of Sampling Frequencies and BCLK Rates ............................................................................26

Table 7

Digital Audio Interface Timing Parameter ..........................................................................................36