STV82X6 datasheet(28/95 Pages) STMICROELECTRONICS

部品番号	STV82X6

部品情報	Multistandard TV Audio Processor and Digital Sound Demodulator

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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28 / 95 page

Power Supplies

STV82x6

28/95

7.2

Standby Mode

The STV82x6 provides a Thru mode configuration that bypasses IC functions via a SCART I/O pin

(Full Analog Path only). In this case, only minimum power is required (Standby mode).

In Standby mode, the digital and analog power supplies are switched off, except for pins VDDA and

VDDH which are used to maintain the SCART path, the last configuration programmed for analog

matrixing (register ANA_SCART) and the power configuration (register ANA_CTRL). When

switching back to normal Full Power mode, all I²C registers are reset except for those used in

Standby mode to maintain the original configuration.

In Standby mode, the I²C bus does not operate. However, the bus can still be used by other ICs

since the I²C I/O pins (SDA and SCL) of the STV82x6 are forced into a high-impedance

configuration.

Figure 17: 5 V / 8 V or 5 V / 5 V Application

Digital Core

Clock Generator

Analog

REG

VDDH

STV82x6

DPS

Standby

VDD1

VDD2

VDDP

8 or 5 V

APS

Core

3.3 V

Regulator

Analog

3.3 V

Regulator

Digital

STV82X6 データシート(PDF) 28 Page - STMicroelectronics

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