TAS5802PWPR datasheet(23/106 Pages) TI2

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Table 6-1. Audio Data Formats, Bit Depths and Clock Rates

FORMAT

DATA BITS

MAXIMUM LRCLK/FS FREQUENCY

(kHz)

SCLK RATE (fS)

I2S/LJ/RJ

32, 24, 20, 16

32 to 96

64, 32

TDM

32, 24, 20, 16

128

44.1, 48

128, 256, 512

128, 256

Before DSP registers initialize with I2C during the start-up, TAS5802 requires a stable I2S signal. When Clock

halt, non-supported SCLK to LRCLK(FS) ratio is detected, the device reports Clock Error in GLOBAL_FAULT1

6.3.4 Serial Audio Port (SAP)

The serial audio interface port is a 3-wire serial port with the signals LRCK/FS, SCK, and SDIN. SCK is the serial

audio bit clock, used to clock the serial data present on SDIN into the serial shift register of the audio interface.

Serial data is clocked into the device on the rising edge of SCK. The LRCK/FS pin is the serial audio left/right

word clock or frame sync when the device is operated in TDM Mode.

The device supports industry-standard audio data formats, including standard I2S, left-justified, right-justified,

and TDM/DSP data. Data formats are selected via Register (SAP_CTRL1 Register (Offset = 33h) [Reset = 02h] -

D[5:4]). If the high width of LRCK/FS in TDM/DSP mode is less than 8 cycles of SCK, the register (SAP_CTRL1

MSB-first audio data; up to 32-bit audio data is accepted. All the data formats, word length, and clock rate

supported by this device are shown in Table 1. The data formats are detailed in Figure 1 through Figure 6.

The word length are selected via Register (SAP_CTRL1 Register (Offset = 33h) [Reset = 02h] - D[1:0]). The

offsets of data are selected via Register ( SAP_CTRL1 Register (Offset = 33h) [Reset = 02h] - D[7]) and Register

(SAP_CTRL2 Register (Offset = 34h) [Reset = 00h] - D[7:0]). The default setting is I2S and 24-bit word length.

Table 6-2. Audio Data Formats, Word Lengths, and Clock Rates

FORMAT

DATA BITS

LRCK/FS FREQUENCY (kHz)

SCK RATE (fs)

I2S/LJ/RJ

32, 24, 20, 16

16, 32, 44.1/48, 96

32,64

TDM/DSP

32, 24, 20, 16

16, 32, 44.1/48, 96

128, 256, 512

MSB

LSB

Left channel

LRCK/FS

SCK

SDIN

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

SDIN

Right channel

Audio data word = 16-bit, SCK=32, 64fs

Audio data word = 24-bit, SCK=64fs

Audio data word = 32-bit, SCK=64fs

Figure 6-2. Left Justified Audio Data Format

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TAS5802

SLASFB7A – NOVEMBER 2024 – REVISED AUGUST 2025

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