Cirrus-logic CS4353 Manuel d'utilisateur télécharger pdf (Page 5)

DS803F3 5

CS4353

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

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

RESET

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

state when this pin is set low (GND) OR when the VCP supply falls below the V

off

threshold (see See

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

mal operation.

1_2VRMS 20

1 or 2 V

RMS

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

selects 1 V

RMS

, while setting it high (VL) selects 2 V

RMS

DEM 21

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

sample rates when enabled.

I²S

/LJ 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.

LRCK 23

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

audio data line.

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

Thermal Pad -

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

from all board connections.

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Cirrus-logic CS4353 Manuel d'utilisateur Page 5