Rev.1.00 2003.05.08 page 1 of 23
Digital Amplifier Processor of S-Master* Technology
M65881AFP
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.
SYSTEM BLOCK DIAGRAM)
APPLICATION
DVD Receiver, AV Amplifier
RECOMMENDED OPERATING CONDITIONS
Logic Block:1.8V±10%,PWM Buffer Block :3.3V±10%
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),I
2
S(24bit)
•Input Signal Sampling Rate from 32kHz to 192kHz.
•Gain Control Function:
+30dB~-
∞
dB (0.1dB Step until -96dB, -138dB Minimum)
•Third Order
∆Σ
(16Fso:6bit/5bit,32Fso:5bit)
* "S-Master" is the digital amplifier technology developed by Sony Corporation. "S-Master" is a trademark of Sony Corporation.
Sampling
Rate
Converter
Clock
Stream
Power
Driver
LRCK
BCK
DATA
256fsi/512fsi
MCU I/F
M65881AFP
Level
Control
+30dB
to
-
∞
24bit
32kHz
to
192kHz
∆Σ
LC
Filter
LC
Filter
Stream
Power
Driver
1024fso/512fso
CD
DVD Audio
etc.
PWM
Clock
Output
for Headphone
OUTLINE : 42P2R
0.8mm pitch 42pin SSOP
