1
© 2014 Microsemi Corporation. All Rights Reserved.
Features
• DSP with Voice Hardware Accelerators
•ΔΣ DAC with output sampling up to 48 kHz and
internal output drivers
• 2 single-ended or 1 differential Output Amp
• 44.1/48 kHz Stereo Music Playback with Voice
• A single Digital Microphone input supporting
up to 2 Microphones
• TDM port shared between PCM and
Inter-IC Sound (I2S)
• Performs sample rate conversions
• SPI Slave port for host processor interface
• Master SPI port for serial Flash interface
• 14 General Purpose Input/Output (GPIO) pins
• General purpose UART port
• Boots from SPI, UART, or Flash allowing easy
firmware updates
• Can run unattended (controllerless), self-
booting into a configured operational state
• Ult ra-l ow a n d Standb y o ff powe r
• Full duplex operation supports AEC (up to
256 ms) in both Narrowband and Wideband
operation (8 kHz or 16 kHz respectively)
• Psychoacoustic noise reduction
• Singl e mi cro ph one
• Stationar y no ise re duc tio n
•AGC/ALC
• Dynamic Range Compression
• Built-in support for G.712 and G.722
• Single and Dual Tone Generation
•MiTuner™ GUI Softw are
• Autom at ed AE C t uni ng
Applications
•IP Cameras
• Se cur ity C am e ras
Description
The Microsemi AcuEdge Technology ZL38050 IP
Camer a Audio Proces s or is designed to pro vi de
leading edge acou s ti c echo cancellation and noise
reduction for IP/Security Cameras.
The ZL38050 device is a highly adaptable hardware
platform designed to support hig h pe rfo rmance audio
process ing applica ti ons . Th e Z L38050 provides a
powerful DSP with voice specific hardware
accelerat ors, one digital microph one interface, one
16-bit DA C w it h headphone drivers, and a flexible
TDM interface in a single 64-pin QFN package.
The Microsemi AcuEdge Technology ZLS38050
license-free Firmware provides Acoustic Echo
Cancellation (AEC), noise reduction and a variety of
other voic e enhance m ents to improve bot h t he
intelligibility and subjective quality of voice in harsh
acoustic environ m ents.
Performance
• AEC Tail Length: 256 ms
• AEC sampling rate: 8 and 16 kHz
• Single Talk TCLw: > 60 dB
• Double Talk TCLw: > 40 dB
• Dou ble Talk At ten u atio n: < 3 dB
• Noise reduction up to 30 dB
Document ID# 148964 Version 3 May 2014
Ordering Inform ation
Device OPN
(1)
Package Packing
ZL38050 LDF1 64-pin Q FN (9x9) Tape & Reel
ZL38050 LDG1 64-pin Q FN (9x9) Tray
1. The Green package meets RoHS 2 Directive 201 1/65/EU of the
European Council to minimize the environmental impact of
electrical equipment.
Microsemi
®
AcuEdge™ Techn o logy
ZL38050
IP Camera Audio Processor
Product Brief
ZL38050
Product Brief
2
© 2014 Microsemi Corporation. All Rights Reserved.
Vo ice Processing Series Solution Overview
Designed for world-class high definition voice applications, Microsemi’s new ZL380 series of audio processors
features the company’s Microsemi AcuEdge™ Technology. This innovative technology is a set of highly-complex
and integrated algorithms that allows the user to extract more information from the audio environment. The new
Microsemi AcuEdge Technology consists of license-free, royalty-free intelligent audio IP algorithms. When
combined with Microsemi’s highly-integrated ZL380 series of audio processors, the solution accelerates customers’
time-to-market via validated reference design and easy-to-use development tools including the Microsemi Audio
Interface Box (AIB) Kit which uti liz es the MiTuner™ GUI software.
ZL38050 Block Diagram
The ZL3 8050 IP Cam era Audio Process or provid es th e fo llow ing enhanced voic e pr oc e ss in g fe at ure set.
Microsemi ZL38050 Hardware
• Host Interface: SPI, UART, I2C
• Standalone (controllerless) auto-boot from Flash
• TDM port configurable as PCM or I2S
• 14 GPI Os , con fig ur able wit h bu il t-in con tro l feat ure s
• Cry stal-l ess ope ra tio n (w ith a va lid T DM clo ck )
• Digital microphone interface supporting one or two digital microphones
• 16-bit digital-to-analog converter (DAC)
• Headphone amp capable of two single-ended or one differential output
• 32 m W ou tpu t dr ive pow er in to 16 oh ms
• Impul se p op/ cli ck pr ote ct ion
PCM/I
2
S
Host Bus Interface
TDM
PCM/I
2
S
Master SPI
PLL
UART
GPIO
S PI Slave/I
2
C Slave
Flash
UART
GPIO
Crystal
DSP
Integrated
Memory
Hardware
Accelerators
DAC
Speaker
Digital
Mics
Decimation
Filter
ZL38050
Product Brief
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© 2014 Microsemi Corporation. All Rights Reserved.
Microsemi AcuEdge™ Technology
ZLS3 805 0 F irmware
• W ideb an d an d N ar row ban d A cou stic Ec ho C an cel lati on
• Initial convergence conditioning
• Psychoacoustic noise reduction
• Singl e mi cro ph one
• Stationar y no ise re duc tio n
• Low active power consumption
• Multi-tone generation
• Signal mixing
• 44.1 kHz/48 kHz music mixed with 8 kHz/16 kHz voice
• H owl ing d ete ctio n/c an cel la tion
• Various encoding/decoding options:
• 16-bit 2’s complement (linear)
• G.711 A/μ law
•G.722
• Send and receive path equalizers
• 16-ba nd f or N arro wb an d m ode
• 22-ba nd f or W ide ba nd m od e
• Comfort noise generation
• 44.1 kHz/4 8 kHz bypass mode
• Configurable Cross-Point Switch
AEC Auto-Tuning
To optimize the acoustic properties of a given system design, the Audio Processor firmware requires gain and level
tuning. The mechanical design, including the speaker and microphone quality and placement, will all affect the
system’s acoustic performance. Microsemi has developed MiTuner™ GUI Softw are (ZLS38508) and the Microsemi
Audio I nterface Box ( AIB) ha rdware (ZLE384 70) to automat ically op timize the firmw are’s tunabl e parameters for a
given h ardware design , facilitating the sy stem d esign p rocess and elim inating the ne ed for tedious manual tuning.
The MiTuner GUI Softwa re provide s ste p-by-step ins t ruc t ions that allo w the s oftwa re’s algo rit hm s to achieve a high
level of aco us t ic perf orm ance for a given encl os ure.
ZL38050
Product Brief
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© 2014 Microsemi Corporation. All Rights Reserved.
Application Example - IP Camera Audio Bloc k Diagram
Device Pinout - Top View
ZL38050
Microphone
DAC
Di gi t al M ic
Flash
Host/IP
Processor
Ethernet
SPI/I2C
TDM/I2S
Speaker
Optional
Speaker
Driver SPIM
64 585960616263 57 56 55 54
11
10
9
8
7
6
5
4
3
2
1
NC
GPIO_9/SM_CS
NC
NC
DVDD12
DVDD33
HDOUT
UART_TX
VSS
NC
53 52 51 50 49
16
15
14
13
12
38
39
40
41
42
43
44
45
46
47
48
33
34
35
36
37
32313029
28
272625
24
23222120191817
HCLK
DVDD33
UART_RX
HCS
HINT
DVDD33
GPIO_10
GPIO_8
DVDD12
GPIO_7
GPIO_6
GPIO_12
GPIO_2
GPIO_5
GPIO_4
GPIO_0
GPIO_3
DVDD33
GPIO_13
GPIO_1
FS/I2S_WS
DR/I2S_SDI
DMIC_IN
NC
DVDD33
NC
XO
DVDD12
DMIC_CLK
NC
EXT_SEL
VSS
DX/I2S_SDO
SM_CLK
SM_MISO
SM_MOSI
DVDD33
DAC_M
DAC_P
NC
CDAC
CREF
RESET
DVDD12
GPIO_11
AVDD33
NC
DVDD12
AVDD33
HDIN
Exposed Ground Pad
VDD12_CTRL
XI
DVDD33_XTAL
PCLK/I2S_SCK
ZL38050
Product Brief
5
© 2014 Microsemi Corporation. All Rights Reserved.
Package Outline (64-Pin QFN)
Info rm a tion r el at in g to pro d uc ts a nd s ervice s fu r n is he d here in by M i crosem i C orpor at io n or its s u bs id ia r ie s (c ollectivel y “ M ic rosemi”) is
believed to be reliable. However, Microsemi assumes no liability for errors that may appear in this publication, or for liability otherwis e
arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual
proper ty rig ht s owned by t hird p arti es whi ch may resul t from su ch appl icat ion or use . Neit her the su pply of such in format ion or purcha se
of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by
Microsemi or licensed from third parties by Microsemi, whatsoever. Purchasers of products are also hereby notified that the use of
product in certain ways or in combination with Microsemi, or non-Microsemi furnished goods or services may infringe patents or other
intellectual property rights owned by Microsemi.
This publication is issued to provide information only and (unless agreed by Microsemi in writing) may not be used, applied or
reproduced for any purpose nor form part of an y order or contract nor to be regard ed as a representation relating to the products or
services concerned. The products, their specifications, services and other information appearing in this publication are subject to
change by Microsemi without notice. No warranty or guarantee express or implied is made regarding the capability, performance or
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cons ti tute an y gu a r an te e th at suc h m eth o ds o f us e w il l b e s at is fa ct or y i n a s p ec i fic p ie c e o f eq ui pm e nt . I t i s th e us er’s res po nsibility to
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is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These
products are not suitable for use in any medical and other products whose failure to perform may result in significant injury or death to
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For more informat io n about all Microsemi products
visi t ou r web si te at
www.microsemi.com
TECHNICAL DOCUMENTATION – NOT FOR RESALE
© 2014 Microsemi Corporation. All rights reserved. Microsemi and the Microsemi logo are trademarks of
Microsemi Corporation. All other trademarks and service marks are the property of their respective owners.
Microsemi Corporation (NASDAQ: MSCC) offers a comprehensive portfolio of semiconductor
solutions for: aerospace, defense and security; enterprise and communications; and industrial
and alternative energy markets. Products include mixed-signal ICs, SoCs, and ASICs;
programmable logic solutions; power management products; timing and voice processing
devices; RF solutions; discrete c omponents; and s ystems. Microsemi is headquartered in Aliso
Viejo, Calif. Learn more at www.microsemi.com.
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One Enterprise, Aliso Viejo CA 92656 USA
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