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ES7134S

8-pin, 24-Bit Stereo D/A Converter for PCM Audio

Unspecified 

Everest Semiconductor

ES7134S

3. APPLICATION DESCRIPTIONS

Sampling Rate and Input Clocks

According to the sampling rate, the device can work in two speed modes, single

speed and double speed. Table 1 lists the typical clock modes supported by the

device. The device supports USB clocks or non standard audio clocks like 25 MHz or

26 MHz.

Table 1 Speed Mode and CLKIN/LRCK Ratio

MODE

Sampling Rate

CLKIN/LRCK Ratio

Single Speed

8kHz – 50kHz

32, 64, 128, 192, 256, 384, 512, 768, 1024

Double Speed 84kHz – 100kHz

128, 192, 256, 384, 512, 768, 1024

Audio Data Input

The ES7134S can accept I²S serial audio input data from 16-bit to 24-bit. The device

can detect the data word length automatically. The relationship of SDATA, SCLK and

LRCK for the format is illustrated through Figures 2.

SDATA

SCLK

LRCK

1 SCLK

123

MSB

n-2 n-1 n

LSB

LEFT CHANNEL

1 SCLK

123

MSB

n-2 n-1 n

LSB

RIGHT CHANNEL

Figure 2 I²S serial audio data format up to 24-bit

Power Up and Power Down

Upon applying VDD, the device will reset itself and enter power down state. During

this state, the device clamps outputs to ground and power down the device operation

except for clock management unit. Once proper CLKIN and LRCK clocks are applied,

the device will leave power down state, and the device outputs ramp from ground to

common mode voltage softly. Then the device enters the normal operation.

Rev 2.0

3

May, 2017

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