BD5446EFV 查看數據表（PDF） - ROHM Semiconductor

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BD5446EFV

Class-D Speaker Amplifier or Digital Input

ROHM Semiconductor 

BD5446EFV

●Power supply start-up sequence

VCCA (25pin)

VCCP1 (53, 54pin)

VCCP2 (28, 29pin)

①Power up VCCA, VCCP1, VCCP2 simultaneously.

REG_3 (5pin)

REG_G1 (1pin)

REG_G2 (27pin)

RESETX (12pin)

②Set RESETX to High after power up.

SYS_CLK (7pin)

BCLK (8pin)

LRCLK (9pin)

SDATA1 (10pin)

SDATA2 (11pin)

③Degital audio data communication.

PDX (14pin)

OUT_DAC1 (23pin)

OUT_DAC2 (22pin)

④Set PDX to High.

MUTEX (13pin)

Speaker output

⑤Set MUTEX to High.

Soft-start

43msec(fs=48kHz)

Technical Note

t

REG_G1, REG_G2

REG_3

t

t

t

t

t

t

t

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© 2011 ROHM Co., Ltd. All rights reserved.

15/31

2011.06 - Rev.C

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