CXP1042Q Просмотр технического описания (PDF) - Sony Semiconductor

Номер в каталоге

Компоненты Описание

производитель

CXP1042Q

System Controller for Compact Disc Players

Sony Semiconductor 

CXP1042Q

3. Mute function

The CXP1042Q has two mute pins, Pin 17 (MUTG...active high) and Pin 18 (MUT2...active low).

The command transferred to the DSP and the state of mute pin differ depending on the selected mute method

when mute is turned on.

• DAC mute (CXD2508A used)

When "mute on" is requested, set Pin 18 (MUT2) active and then transfer the attenuate command (A00000h)

to the DAC.

Only when "open/stop" is requested, set Pin 17 (MUTG) active after approximately 32ms from the command

transfer.

• DSP mute (CXD2507A used)

When "mute on" is requested, set Pin 17 (MUTG) and Pin 18 (MUT2) active and then transfer the mute

command (A207F0h) to the DSP.

Note that A007F0h is transferred when mute is turned off both for DAC mute and DSP mute.

Timing chart for mute on

Operation request STOP

DAC mute

ACCESS

PLAY

PAUSE

Command to DSP

A00000

A007F0

A00000

MUT2 pin

MUTG pin

DSP mute

Command to DSP

A207F0

A007F0

A207F0

MUT2 pin

MUTG pin

PLAY

STOP

A007F0

A00000

32ms

A007F0

A207F0

– 13 –

Share Link: