STA380WS datasheet(17/48 Pages) STMICROELECTRONICS

Part #	STA380WS

Description	Sound Terminal 2-channel high-efficiency digital audio system

PDF	48 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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17 / 48 page

DocID024426 Rev 1

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STA380WS

Functional description

4.1

Functional pins

4.1.1

Power-down function

Pin PWRDN (23) is used to power down the STA380WS.

PWRDN = 0 (0 V): power-down state

PWRND = 1 (VDD): normal operation

During the power-down sequence the output begins to mute. After the mute condition is

reached, the power stage is switched off and the output becomes high impedance. Then the

master clock to all internal hardware blocks is gated off. The PLL is also switched off. The

complete power-down sequence takes 13 million cycles.

4.1.2

Reset function

Pin RESET (31) is used to reset the STA380WS.

RESET = 0 (0 V): reset state

RESET = 1 (VDD): normal operation

When pin RESET is forced to 0, the power stage is switched off (with high-impedance

output) and the master clock to all internal hardware blocks is gated off.

Note:

Reset has a higher priority than power-down.

Obsolete

Product(s)

- Obsolete

Product(s)

STA380WS Datasheet(PDF) 17 Page - STMicroelectronics