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DS895A2

CS4354

1. PIN DESCRIPTIONS

Pin Name Pin #

Pin Description

VL

1

Serial Audio Interface Power (Input) - Positive power for the serial audio interface.

SDIN

2

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

MCLK

3

Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.

LRCK

4

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

audio data line.

SCLK/DEM

5

Serial Clock (Input) - Serial clock for the serial audio interface.

FILT+

7

Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.

AOUTA

AOUTB

8

9

Analog Outputs (Output) - The full-scale analog line output level is specified in the Analog Characteris-

tics table.

GND

6, 10 Ground (Input) - Ground reference. See Section 4.10 on page 18 for layout considerations.

VA

11

Analog, Charge Pump, and Regulator Power (Input) - Positive power supply for the analog, inverting

charge pump, and regulator for the digital core logic sections.

FLYP

FLYN

12

13

Inverting Charge Pump Cap Positive/Negative Nodes (Output) - Positive and Negative nodes for the

inverting charge pump’s flying capacitor.

-VFILT

14

Inverting Charge Pump Filter Connection (Output) - Power supply from the inverting charge pump that

provides the negative rail for the output amplifiers.

VL

-VFILT

SDIN

FLYN

MCLK

FLYP

LRCK

VA

SCLK/DEM

GND

GND

AOUTB

FILT+

AOUTA

1

2

3

4

5

6

7

9

10

11

12

13

14

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