January 2014
Revision 2.0
NPCP215x Audio Enhancing Engine and Power Amplifier Family
General Description
Outstanding Features
The Nuvoton NPCP215x device is a member of Nuvoton’s
Audio Enhancing family optimized for consumer electronics
applications.
The NPCP215x integrates MaxxAudio-3, an audio enhancement suite of algorithms designed by Waves
The algorithm suite uses advanced methods, based on psycho-acoustics, to provide a full, rich, exciting and immersive
sound, even from slim speakers, limited power amplifiers
and other acoustic restrictions that are commonly found in
modern consumer electronics devices.
■
Improves audio quality for low-performance speakers
■
System-level BOM savings
■
Stereo or Stereo + Sub-woofer operation
■
I2C controlled
■
24-bit accuracy
■
Audio algorithms
—
MAXXBASS
®
—
—
MAXXTREBLE
—
MAXXEQ
—
MAXXVOLUME
—
MAXXLEVELER
—
MAXXDIALOG
®
■
Audio input: up to four I2S or Synchronous Serial Interface (SSI) inputs
■
Audio output:
— Up to three I2S or SSI outputs
— Class-D Power output up to 2 x 20W
— 2.1 way power output up to 2 x 10W + 20W (internal
generation of sub-woofer)
■ 100 dB SNR
■ Typical power efficiency of 90%
■
Various protection sensors
■
Several General-Purpose digital signals available to
the application (GPIOs)
■
Logic supply of 3.3V and Power supply up to 26.4V
■
7 x 7 mm, 48-pin Quad Flat No-Lead (QFN) package
System Block Diagram
Speakers
I2S
LC
Filters
4
Audio System
Controller
I2C (Control)
Optional Sub-Woofer
NPCP215x
3
I2S Outputs
GPIOs
MUTE
© 2014 Nuvoton Technology Corporation
www.nuvoton.com
NPCP215x Audio Enhancing Engine and Power Amplifier Family
Product Brief
NPCP215x
Features
Bus Interfaces
■
■
— MaxxLeveler regulates the perceived volume of the
audio, keeping all audio content at the same level.
■ MaxxDialog
Synchronous Serial Interface (SSI)
— Compatible with I2S
■ I2C Interface
— MaxxDialog is a revolutionary new technology that
enables users to adjust center channel dialog levels
without affecting the rest of the audio mix. Based on
the Waves Center pro audio plug-in, MaxxDialog delivers clear, crisp dialog that does not disappear behind loud music and effects.
■ Sub-Woofer
— Compliant with I2C-BUS Specification Revision 1.0,
1992
— Master or slave interface
— Supports 7-bit address mode
Audio Enhancing Engine
■
— Enables separating low-frequency content and directing it into a third audio channel, for driving a subwoofer.
Processing Unit
— 24-bit
— 125 MIPs
Power Amplifier
Audio Algorithms
■
■
MaxxBass
■
— Patented Waves MaxxBass psycho-acoustic bass
extension delivers a more natural sound than traditional bass boost technologies, which use EQ and
can overpower your system. MaxxBass analyzes
low frequencies to create harmonics that are perceived as lower, deeper tones.
■ Maxx3D
■
■
■
■
— Maxx3D extends the span of stereo-side content
while maintaining the integrity of unprocessed center content.
— Maxx3D improves the stereo separation of speakers, widening the stereo field for optimal imaging.
■ MaxxTreble
Class-D Power up to 2 x 20W to 6 or 8 (0.5% THD)
2.1 way power output up to 2 x 10W + 20W (internal
generation of sub-woofer)
Typical power efficiency of 90%
100 dB SNR
Less than 0.4% THD at 1W
Protection:
— Over-current
— Under-voltage
— Over-temperature
Straps, Clocks, Supply and Package Information
■
— MaxxTreble delivers crystal clear high-frequency enhancement for increased RMS without exceeding
the system ceiling. Its proprietary algorithm restores
luster to over-compressed formats to provide the
perfect listening experience.
■ MaxxEQ
Strap Input Controlled Operating Modes
— PLL reference clock select (REF strap)
— Test mode select (nTEST strap)
— I2C master or slave select (I2CMS strap)
— Boot options
❏ ROM code operation
❏
— MaxxEQ provides the ability to design EQ curves
and shape sound with surgical precision, using up to
20 programmable filters with bell, shelf, low pass,
and high pass, plus adjustable frequency, gain, and
Q parameters. MaxxEQ’s intuitive Graphic User Interface makes click-and-drag filter design fast and
easy.
■ MaxxVolume
Loadable algorithms for new functions or ROM
code patching
■
Input Clocks
— SSI / I2S clock: 1 MHz - 5 MHz input
— Optional crystal oscillator or input clock
■ Power Supply
— 3.3V Logic supply
— 9V to 26.4V Power supply
■ Power-Save Modes
— Power-down of less than100 mW
— Power stage shut down
■ Package
— 7 x 7 mm, 48-pin Quad Flat No-Lead (QFN) package
— MaxxVolume is an all-in-one volume control, with
High-Level Compression to increase RMS levels,
Low-Level Compression to increase the clarity of
soft sounds, Noise Gating to eliminate signal and
system noise, and Leveling to smooth out volume
levels.
It includes:
❏ Leveler - (replaces traditional AGC)
❏ Low-level gain
❏ Dynamic range curve controller
❏ Noise gate
www.nuvoton.com
MaxxLeveler
2
Revision 2.0
NPCP215x
Features
(Continued)
Derivative Table
Algorithms
I2S
Package Stereo
Inputs
Output
Power
Maxx 3D SubMaxx Maxx Maxx Maxx Maxx
& Maxx Woofer
Bass EQ Treble Volume Leveler
Dialog Support
Product
ID
NPCP215F
0011
QFN48
4
2x20W
or
2x10W + 20W
NPCP215B
0010
QFN48
4
2x20W
or
2x10W + 20W
Algorithm Processing Chain
Maxx
Bass
Revision 2.0
Maxx
3D
Maxx
Dialog
Maxx
Treble
3
Maxx
EQ
Leveler
Maxx
Volume
www.nuvoton.com
I2S
4x I2S
inputs
www.nuvoton.com
SDI3
SDI2
SDI1
SDI0
4
+
+
Note: All paths in the diagram are
stereo except otherwise stated.
M8
M7
M6
M5
M4
M3
M2
M1
M[1..8] =
-inf .. 18 dB
Bypass
Sub-Woofer
Out
+
+
+
+
In mode 2.0, M15 Is forced to 0.
In Mode 2,.1 M16 and M17 are forced to 0.
M15
M16
M17
M14
M11
M13
M10
M12
M9
Device Audio Path Block Diagram
Note: Sub-Woofer Out appears
on both left and right.
Audio Engine
Processing Path
Stereo Out
M[9..17] =
-inf .. 0 dB
SDO3
PWM
2x PWM
Note: The sub-woofer PWM
generation is mono.
1x Sample
Rate
Converter
2x Sample
Rate
Converter
SDO2
SDO1
SDO0
I2S
PWMSW
PWML,
PWMR
3x I2S
outputs
NPCP215x
Features
(Continued)
Revision 2.0
NPCP215x
QFN48 Physical Dimensions
Control dimensions are in millimeters.
48-Pin Quad Flat No-Lead (QFN) Package
Order Number: NPCP215BA0YX or NPCP215FA0YX
Device topside mark specification:
1st Line:
2nd Line:
3rd Line:
4th Line:
Nuvoton Company Logo.
Part number - NPCP215xA0YX (x is B or F)
(‘Y’: QFN package number; ‘X’: Green package finish indicator.)
Assembly Lot Number - XXXXXXXXXXX.
Tracking code - YWWXXXX, where YWW is the Date Code and XXXX
is Nuvoton proprietary information.
NPCP215xA0YX
XXXXXXXXXXX
YWWXXXX
Date code: YWW, where Y is the year and WW is the week. For example, date code
235 indicates that device assembly was done on week 35, year 2012.
Revision 2.0
5
www.nuvoton.com
NPCP215x Audio Enhancing Engine and Power Amplifier Family
Important Notice
Nuvoton products are not designed, intended, authorized or warranted for use as components in systems or equipment intended
for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Furthermore,
Nuvoton products are not intended for applications wherein failure of Nuvoton products could result or lead to a situation wherein
personal injury, death or severe property or environmental damage could occur.
Nuvoton customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify
Nuvoton for any damages resulting from such improper use or sales.
Headquarters
No. 4, Creation Rd. 3,
Science-Based Industrial Park,
Hsinchu, Taiwan, R.O.C
TEL: 886-3-5770066
FAX: 886-3-5665577
http://www.nuvoton.com.tw (Chinese)
http://www.nuvoton.com (English)
Nuvoton Technology Corporation America
2727 North First Street,
San Jose, CA 95134, U.S.A.
TEL: 1-408-544-1718
FAX: 1-408-544-1787
Nuvoton Technology (Shanghai) Ltd.
27F, 2299 Yan An W. Rd.
Shanghai, 200336 China
TEL: 86-21-62365999
FAX: 86-21-62365998
Taipei Office
9F, No.480, Rueiguang Rd.,
Neihu District, Taipei, 114,
Taiwan, R.O.C.
TEL: 886-2-2658-8066
FAX: 886-2-8751-3579
Winbond Electronics Corporation Japan
NO. 2 Ueno-Bldg., 7-18, 3-chome
Shinyokohama Kohoku-ku,
Yokohama, 222-0033
TEL: 81-45-4781881
FAX: 81-45-4781800
Nuvoton Technology (H.K.) Ltd.
Unit 9-15, 22F, Millennium City 2,
378 Kwun Tong Rd.,
Kowloon, Hong Kong
TEL: 852-27513100
FAX: 852-27552064
For Advanced PC Product Line information contact: APC.Support@nuvoton.com
Please note that all data and specifications are subject to change without notice.
All trademarks of products and companies mentioned in this document belong to their respective owners.
www.nuvoton.com