Texas Instruments TAS5508-5142K7EVM Uživatelský manuál stáhnout pdf (Strana 10)

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2.2 PSU Control Interface (J902)

(PCBconnectortopview)

2.3 Loudspeaker Connectors (J101 … J107)

PSU Control Interface (J902)

Table 2-2. J901 Pin Description

PIN NO. NET-NAME AT SCHEMATICS DESCRIPTION

1 PVDD Output-stage power supply

2 SYSTEM System power supply

3 GND Ground

4 GND Ground

Table 2-3. J900 Pin Description

PIN NO. NET-NAME AT SCHEMATICS DESCRIPTION

1 PVDD Extra output-stage power supply

2 PVDD Extra output-stage power supply

3 GND Extra ground

4 GND Extra ground

This interface is used for onboard sensing of output supply voltage and for the power supply volume

control (PSVC) signal.

Figure 2-3. J902 Pin Numbers

Table 2-4. J902 Pin Description

PIN NO. NET-NAME AT SCHEMATICS DESCRIPTION

1 — Reserved for future use

2 PVDD Sense of output power supply

3 GND Ground

4 RESET System reset (bidirectional)

5 PSVC Power supply volume control signal

CAUTION

Both positive and negative speaker outputs are floating and may not be

connected to ground (e.g., through an oscilloscope).

System Interfaces10 SLEU071 – June 2006

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Texas Instruments TAS5508-5142K7EVM Uživatelský manuál Strana 10