Renesas M65881AFP manual Description, Features, Main Specification, Application

M65881AFP

Digital Amplifier Processor of S-Master* Technology

REJ03F0004-0100Z Rev.1.00 2003.05.08

DESCRIPTION

The M65881AFP is a S-Master technique processor for digital amplifier enable to convert from multi liner-PCM digital input signal to high precise switching-pulse digital output without analog processing.

The M65881AFP has built-in 24bit sampling rate converter and digital-gain-controller.

The M65881AFP enables to realize high precise ( X`tal oscillation accuracy.) full digital amplifier systems combining with power driver IC.

FEATURES

•Built-in 24bit Sampling Rate Converter.

Input Signal Sampling Rate from 32KHz to 192KHz (24bit Maximum).

4 kinds of Digital Input Format.

•Built-in L/R Independent Digital Gain Control.

•Built-in Soft Mute Function with Exponential Approximate-Curve.

•Correspondence to Output for Headphone.

OUTLINE : 42P2R

0.8mm pitch 42pin SSOP

MAIN SPECIFICATION

•Master Clock

Primary Clock: 256Fsi/512Fsi Secondary Clock: 1024Fso/512Fso •Input Signal Format:

MSB First Right Justified(16/20/24bit),MSB First Left Justified(24bit) LSB First Right Justified(24bit),I2S(24bit)

•Input Signal Sampling Rate from 32kHz to 192kHz. •Gain Control Function:

+30dB~-∞dB (0.1dB Step until -96dB, -138dB Minimum) •Third Order ΔΣ (16Fso:6bit/5bit,32Fso:5bit)

APPLICATION

DVD Receiver, AV Amplifier

RECOMMENDED OPERATING CONDITIONS

Logic Block:1.8V±10%,PWM Buffer Block :3.3V±10%

SYSTEM BLOCK DIAGRAM)

M65881AFP

	LRCK		24bit	Sampling
CD
				Rate
DVD Audio	BCK
etc.	DATA			Converter
			32kHz
			to
		192kHz

256fsi/512fsi Clock

Level
Control	ΔΣ
+30dB
to
-∞

Clock

MCU I/F

PWM

Stream	LC
Power
	Filter
Driver
Stream	LC
Power
	Filter
Driver

Output

for Headphone

1024fso/512fso

* "S-Master" is the digital amplifier technology developed by Sony Corporation. "S-Master" is a trademark of Sony Corporation.

Rev.1.00 2003.05.08 page 1 of 23