CDB4353(2009) Просмотр технического описания (PDF) - Cirrus Logic

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CDB4353
(Rev.:2009)

3.3 V Stereo Audio DAC with 2 VRMS Line Output

Cirrus Logic 

CS4353

VA

VBIAS

RESET

1_2VRMS

DEM

I²S/LJ

LRCK

SDIN

Thermal Pad

17 Low Voltage Analog Power (Input) - Positive power supply for the analog section.

18 Positive Voltage Reference (Output) - Positive reference voltage for the internal DAC.

Reset (Input) - Optional connection for an external reset control. The device enters a powered-down

19 state when this pin is set low (GND) OR when the VCP supply falls below the Voff threshold (see See

“Internal Power-on Reset Threshold Voltages” on page 10.). This pin should be set high (VL) during nor-

mal operation.

20

1 or 2 VRMS Select (Input) - Selects the analog output full-scale voltage. Setting this pin low (GND)

selects 1 VRMS, while setting it high (VL) selects 2 VRMS.

21

De-emphasis (Input) - Selects the standard 50 μs/15 μs digital de-emphasis filter response for 44.1 kHz

sample rates when enabled.

22

Digital Interface Format (Input) - Selects the serial audio interface format. Setting this pin low (GND)

selects I²S, while setting it high (VL) selects Left-Justified.

23

Left / Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial

audio data line.

24 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.

-

Thermal Relief Pad - This pad may be soldered to the board, however it MUST be electrically isolated

from all board connections.

DS803F1

5

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