Users manual
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| Document ID | 3821032 |
| Application ID | 35K/KlUXstQNA4fD1RPfPQ== |
| Document Description | Users manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 93.76kB (1171960 bits) |
| Date Submitted | 2018-04-18 00:00:00 |
| Date Available | 2018-06-02 00:00:00 |
| Creation Date | 2018-04-10 08:05:37 |
| Document Lastmod | 2018-04-13 11:16:47 |
| Document Title | Users manual |
| Document Creator | Microsoft Word |
| Document Author: | Inês Carvalho |
IPAM 400 Preliminary Development Specification Advanced, multi format IP audio module with network, USB and serial interfaces plus Wi-Fi, adding IP based streaming and controlling capabilities to OEM products Document version 02.20 Release date 9th April 2018 Hardware Rev. HW 12 © 2017 Barix AG, all rights reserved. All information is subject to change without notice. All mentioned trademarks belong to their respective owners and are used for reference only Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Table of Contents TABLE OF CONTENTS INTRODUCTION About this document Additional documents About the IP AUDIO MODULE 400 Hardware features Evaluation of the Barix IP Audio Module Basic Support Package (BSP) Yocto layer HARDWARE Mechanical drawing Block diagram Network interfaces Serial interfaces Digital audio Analog audio Power supply Peripheral I/O CONNECTORS Connector placement Connector pin out J1 pin out (analog audio input and output) J2 pin out (GPIO, UART, USB, I2C) J4 pin out (network, USB) J5 pin out (I2S output) 10 10 LAYOUT GUIDELINES 11 General rules 11 Carrier PCB Power and Signal Domains 12 TECHNICAL DATA 13 Power supply input 13 CPUs / Boot / Memory 13 Network interfaces 13 Table of contents 2 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Serial interfaces 13 Peripheral I/O interfaces 13 Audio interfaces Audio Processor (Codec) Decoding features Line Input and A/D Conversion typical values Microphone input and A/D conversion typical values Line output and D/A conversion typical values 13 13 14 14 14 Mechanical 14 Dimensions 14 Weight 14 MTBF calculations 15 Environmental 15 Core frequency versus Temperature variation 15 Certifications / Compliances 16 ORDERING INFORMATION 17 Table of contents 3 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Introduction About this document This Development Specification aims at giving insight to detailed technical aspects of the Barix IP AUDIO MODULE 400 (IPAM400) and complements the information given in the product sheet. Additional documents As several different Linux OS based images and packages can be used with the Barix IP AUDIO MODULE 400, the process of loading or updating software is covered in individual documents. For information about the loading and configuration of the loaded firmware please refer to the corresponding software user manual and firmware technical documentation. About the IP AUDIO MODULE 400 The IP AUDIO MODULE 400 enables manufacturers of traditional audio devices to add network capabilities to their products as well as develop IP streaming devices. Hardware features The Barix IP AUDIO MODULE 400 features: • Stereo line input and output, 0dBuStereo Line in and outputs • Microphone input (coil, powered or passive capacitive, balanced or unbalanced) • I2S input and output (192k capable) • Integrated SoC with ARM Cortex quad core CPU • 10/100/100Mbit Ethernet port (with PHY) • SD/TF card slot • 16MB SPI Flash • TTL level UART • USB2.0 OTG interface, two USB2.0 Host • Dallas 1-wire interface (e.g. for Real Time Clock) • 7 GPIOs • Small form factor • Low Power consumption, runs off a single +3.3Volt DC power source • 2 mounting holes (0.106”/2.7mm) for fixation of IP Audio Module Barix recommends the IPAM evaluation board based on Annucicom 60 Evaluation of the Barix IP Audio Module for evaluation purposes prior to development of an own carrier board. Introduction 4 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Basic Support Package (BSP) Yocto layer The BARIX IPAM400 can be used for developing multiple applications related to networked audio distribution, playback and control. BARIX provides an embedded Linux system based on the Yocto framework and the associated Yocto layer that contains the board's Basic Support Package (BSP) for the IPAM400. This Yocto layer can be used as a base platform to develop all kind of applications on top of it. The provided BSP Yocto layer includes: · Definitions for the "barix-ipam400" machine · U-Boot boot loader · Linux Kernel 4.x · A default Linux Kernel device tree and Kernel configuration · Secure Firmware update mechanism featuring a dual root file system strategy and a recovery mechanism · Definition for a base SW image · Scripts to create and install SW images and SW updates All these functionalities are configurable and adaptable to the developer's needs. Developers can use the BSP to generate the toolchain that enables the development of any application. The BSP package is a starting point and can be easily extended by creating or adding Yocto layers that allow developers to quickly add more applications and libraries to completely customize the software and to create new SW images. The common feature set includes: • Embedded and robust operating system with IPv4/IPv6 IP stack • IP standard based protocols (TCP/IP, UDP, HTTP, ICMP, SNMP) OEM Software development by BARIX on request High quality, multi standard audio encoding and decoding can be implemented in software: • G.711, G.722, PCM linear, Ogg Vorbis, MP3, AAC+, FLAC • Acoustic echo cancellation (AEC) • • Introduction 5 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Hardware Mechanical drawing The Barix IP AUDIO MODULE 400 provides five, standard 2,54mm spacing, single row pin headers, intended to match target connector or motherboard, also suitable to soldering. For mechanical fixation, the board provides two 2.7mm mounting holes for 2.5mm screws. The total size is 56.1mm +/-0.2 by 33.0mm +/-0.2. Maximum component height is 5.6mm. Using standard distance bolts of 6mm a total height of 9mm above the carrier board can be achieved when mounted on a carrier board by means of soldering the pin headers into holes of the carrier board directly. Using single row female headers (counterpart to pin headers) the height will increase and must be measured by the integrator (our experience in production shows a minimal height of 11.5mm above the carrier board without using distance bolts and 12mm using 9mm distance bolts). Although the total height is increased, the advantage of being able to replace a module should be considered. The above drawing shows the component side which faces down onto the carrier PCB. Dimensions are metric (mm) Drawing is not to scale Tolerance of PCB dimension is +-0.2mm, others 0.1mm Hardware 6 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Block diagram Network interfaces 1 x PHY (TP), 2 ETH Status LEDs The Barix IP AUDIO MODULE 400 is equipped with one physical layer (PHY) Ethernet interface (10/100MBit, full / half duplex, autonegotiation). Two Ethernet status LEDs can be controlled. Serial interfaces 2 x UART (TTL level), 1 x USB 2.0 OTG and 2 x USB 2.0 Host The serial port UART0 can be used to build serial standard interfaces like RS-232 or RS-485 by attaching external driver chips. Flow control signals are available for that UART. The second UART shares its function with IO pins and is Tx/Rx only. One USB 2.0 On-the-Go and 2 x USB 2.0 Host interfaces supporting High-Speed (HS,480Mbps), Full-Speed(FS,12Mbps) and LowSpeed(LS,1.5Mbps) in host mode. It complies with EHCI v1.0 and OHCI v1.0a. Digital audio I2S (Inter-IC Sound) The I2S interface can be used to connect with I2S capable devices. Hardware 7 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Analog audio 1 x Stereo Output (L&R), 1 x Microphone Input (balanced/unbalanced) or 1 x Stereo Input Three analog audio interfaces are provided on the Barix IP Audio Module of which two can be used concurrently (audio input can be selected to be either stereo input or microphone input). The stereo output can be used to connect to analog amplifiers. The stereo inputs allow for the connection of analog audio sources with Line level outputs. The microphone (differential inputs, self-biasing) supports the use of a wide selection of microphones (dynamic, capacitive, FET amplified). The positive microphone input pin is shared with the left line input so either Mic or Line In can be selected. The SoC provides some level adjustment in software both input and output work with nominal 0dBu audio level. Power supply 1 x VIN, 8 x DGND, 1 x AGND One connector with pins is provided to power the Barix IP Audio Module from a single +3.3 Volt DC power source. Several ground pins are implemented. It is common practice to connect them all to the ground plate. A separate ground domain for the analog part needs to be connected via separate ground pin. Max. power consumption of the IPAM 400 is 4 Watts A separate ground is provided for the audio interfaces. Peripheral I/O 6 x GPIO Of the seven 3.3VDC digital general purpose I/Os available on the IP AUDIO MODULE 400 three can be used freely by OEM software as either input or output while four I/Os are reserved for designated functions (see below). When configured as input (default) the I/O is internally pulled up to 3.3 VDC. Reserved functions: • Two I/O pins serve as a user interface for driving status LEDs (green and red) • One I/O it is used to control power on of the amplifier IO/IR-in/RXD3 GPIO# PA14, Infrared input, UART_3 data receive D0-REL IO/TXD3 IO/RTS3 IO/CTS3 GPIO#PA10 GPIO#PA13 / UART_3 data transmit GPIO#PA15 / UART_3 flow control output GPIO#PA16 / UART_3 flow control input OWA_OUT GPIO#PA17 / OWA( One Wire Audio); SPDIF interface. Hardware 8 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Connectors Connector placement Connector pin out J1 pin out (analog audio input and output) For connector placement (and type) please refer to the mechanical drawing in previous chapter. Pin # Name Type Description (usage) MICIN1N AI MICIN1P AI AGND INR LINEOUTL AI AO Mic balanced negative input (unbal. Mic / line: connect 1uF to GND) Mic positive input or Left channel audio input (for line see remark above) Audio Ground Right channel audio input Left channel audio output LINEOUTR AO Right channel audio output Type: AI=Audio Input, AG=Audio Ground (centrally connected to DGND), AO=Audio Output Connector pin out J2 pin out (GPIO, UART, USB, I2C) Pin # Name Type Description (usage) -RST IO/IR-in/RXD3 DGND D0-REL IO/TXD3 IO/RTS3 IO/CTS3 OWA_OUT Recovery 10 11 DGND VIN GPIO#PA16 / UART_3 flow control input GPIO#PA17 / OWA(One Wire Audio);complies with SPDIF interface VCC_IO_EN (Button for Reset/Factory defaults/Bootloader) Digital Ground Audio module input Voltage 3.3 VDC 12 13 CTS1 RTS1 UART_1 flow control input UART_1 flow control output 14 15 16 RXD1 TXD1 DGND UART_1 data receive UART_1 data transmit Digital Ground 17 18 USBDM1 USBDP1 USB 2.0 Host Interface negative USB 2.0 Host Interface positive 19 TWI0-SCK 20 TWI0-DA Active low Reset I/O (Hardware reset from power surveillance) GPIO# PA14, Infrared input, UART_3 data receive, second amplifier shutdown Digital Ground GPIO#PA10 GPIO#PA13 / UART_3 data transmit GPIO#PA15 / UART_3 flow control output GPIO#PA11 /I²C Clock (Connected internally / Internal testing only) GPIO#PA12 /I²C Data (Connected internally / Internal testing only) Type: O=Output, I=Input, P=Power, B=bidirectional, D = Open Drain (pull-up resistor on module) Connector pin out J3 pin out (USB OTG, Host) Connectors 9 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Pin # Name Type Description (usage) Reserved USB-IDDET USB ID detection DGND USBDM0 USBDP0 Digital Ground USB 2.0 Host Interface negative / USB 2.0 OTG Interface negative USB 2.0 Host positive negative / USB 2.0 OTG Interface positive Type: O=Output, I=Input, P=Power, R = Reference level Connector pin out Pin # Name Type Description (usage) EPHY-TXP TCT EPHY-TXN Transceiver positive output Transmit Transformer center Tap Transceiver negative output 10 DGND EPHY-RXN RCT EPHY-RXP DGND USBDM2 EPHY-SPD-LED Digital Ground Transceiver negative input Receive Transformer center Tap Transceiver positive input Digital Ground USB 2.0 Host Interface negative Ethernet 10/100M indicator LED 11 12 EPHY-LINK-LED USBDP2 Ethernet LINK up/down LED USB 2.0 Host Interface positive J4 pin out (network, USB) Type: O=Output, I=Input, P=Power, R = Reference level Connector pin out J5 pin out (I2S output) Pin # Name Type Description (usage) PCM0_CLK PCM0_DO PCM0_SYNC DGND Reserved X24MO DGND I²S serial clock output I²S serial data output I²S frame indication Digital Ground Clock Output 24MHz Crystal Digital Ground PCM0_DI I²S serial data input Type: O=Output, P=Power Connectors 10 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Layout Guidelines General rules • A low ESR Capacitor of 10uF to 47uF in parallel to a low loss ceramic 100nF capacitor is recommended as power supply bypass close to the Barix Audio Module's power supply pins. • All available ground pins of the Barix Audio Module should be attached to their respective ground domain. • Analog and digital ground domains must be connected outside of the IPAM 400 ! To allow low noise designs, the analog ground domain on the IPAM is kept unconnected from the digital (noisy) ground. • Avoid signal trace routing crossing domain borders (see graphic on next page). • Restricted Area A must not contain any high current switching circuitry nor any components creating magnetic flux (see graphic on next page). • Flood unused PCB areas with copper and connect those planes to it's respective ground. • Designers should use good PCB layout techniques suited for high speed bidirectional data bus design when the USB signal run is more than a few cm in length • The USB signal lines should be of equal electrical length and track width for their entire length • The USB signal lines include provision for termination resistors (to DGND). The exact value of the terminations may need to be checked or confirmed by a designer and are in the vicinity of 15 Kilo-Ohms (+/- 5%). These termination resistors should be close to either the USB socket or the IPAM connector. • A more complex (capacitive) termination may be needed under some circumstances. • Any unused pins can be left open to save power consumption (no pull-up or pull-down needed). • Any unused audio pins can be left open. Only exception is the need of a 1uF capacitor on MICI- (CON3 pin 1) to ground when using as unbalanced Mic input or when using Line in. • When planning on variations of carrier PCBs consider a filter consisting of a resistor/ inductivity and a capacitor (close to the target devices connector) for audio inputs and outputs: • For audio inputs always place a filter capacitor (Ci, see schematic below) to ground just after the above-mentioned resistor/ inductivity (towards the IPAM connector). For unused audio connectors inputs simply do not populate the resistor/inductivity. Calculate the values for this R-C filter according to your use (desired cut-off frequency versus impedance). • For audio outputs always place a filter capacitor (Co, see schematic below) to ground just after the above-mentioned resistor/ inductivity (towards the IPAM connector) and populate the resistor/inductivity. Calculate the values for this R-C filter according to your use (desired cut-off frequency versus impedance). Layout Guidelines 11 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 • Although all audio inputs are DC-decoupled consider the use of current limiting resistors in the audio signal path close to the devices connectors. It is a good procedure to also limit the max input voltage to 3.3 volts using zener diodes (ZDi) right after the resistor. • Carrier PCB Power and Signal Domains Relevant excerpt from previous chapter “General Rules”: • • All available ground pins of the Barix Audio Module should be attached to their respective ground domain. • You MUST provide analog ground to the PCB and that ground must be connected to the power supply ground externally to the IPAM (on the carrier PCB) Avoid signal trace routing crossing domain borders (see graphic above). Layout Guidelines 12 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Technical data Power supply input CPUs / Boot / Memory Parameter Min Supply voltage (Nominal) Supply voltage (Absolute Maximum Ratings) Power consumption max. 3.3 3.2 Peripheral I/O interfaces VDC VDC Details Central processor unit Boot Encryption Quad-core ARM CortexTM –A7 MPCoreTM Processor Memory Ext. memory Serial interfaces Unit Parameter Memory features Network interfaces Max 3,3 3.4 Supports fast boot process from Flash or SD/TF card Crypto Engine (CE) • 32KB L1 Instruction cache and 32KB L1 data cache per core • 512KB L2-cache • VFPv4 Floating point unit • Supports LPAE and NEON Advanced SIMD 16MB SPI flash Supports TF and SD card Parameter Details Ethernet type Functionality Status display Protocols 10/100 Base (integrated PHY) 10/100 Mbit, full / half duplex, auto negotiation Link / Activity LED TCP/IP, UDP, RTP, SIP, DHCP Parameter COM 1 (UART 0) Signals Baud rates Data bits Parity Stop bits Flow control RxD, CTS both TTL 3.3 VDC, TxD, RTS both TTL 3.3VDC (VH min. 0.7*Vin), GND 300 .. 115200 7 or 8 No, Even, Odd 1 or 2 No, XON/XOFF Parameter Min IIN/Out current for input and output VIL Input Low Voltage -40 -0.3 VIH Input High Voltage VOL Output low voltage @IOL max 4 mA 0.7*Vin VOH Output high voltage @IOH max 4 mA Vin-0.2Vdc Max Unit 40 0.3*Vin mA VDC Vin+0.3Vdc 0.2 VDC VDC Vin VDC Audio interfaces Format Sampling rate / Bit rate & type Audio Processor (Codec) Decoding features PCM 16bit linear PCM 8bit logarithmic (µLaw / aLaw) G.722 Ogg Vorbis 1 8..48 kHz 8..48 kHz 16 kHz 48 kHz / 500 kbps MPEG1 & MPEG2 Layer 3 (MP3) 8 to 48 kHz / 32..192 kbps, constant bit rate (CBR) and variable bit rate (VBR) in a future firmware release Technical Data 13 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Audio interfaces Line Input and A/D Conversion typical values Parameter Value Input clipping level (input gain set to 0 dBu)* Analog input impedance Frequency response (-3dB) @ 48 kHz sample rate PCM Signal-to-noise ratio (SNR) VRMS VPP dBu 2000 20..22750 Ω Hz >90dB dB 96 dB <0.02 Better -60 dB Dynamic Range (16 bit theoretical) Total Harmonic Distortion (THD @ -3dBFS) Interchannel Isolation (Stereo Cross Talk) Unit 0.975 2.76 +2 *Software selectable input gain from -3db to +19.5dB in 1.5 dB steps Audio interfaces Microphone input and A/D conversion typical values Parameter Value Input clipping level (at input gain 0 dB and microphone gain 21dB)* Analog input impedance (differential) Frequency response (-3dB) @48 kHz sample rate PCM Analog line input signal-to-noise ratio (SNR) Dynamic Range (16 bit theoretical) Input Total Harmonic Distortion (THD @ -3dBFS) Unit 0.111 -26.9 VPP dBu 18 21..22'750 -73 96 0.018 kΩ Hz dB dB * Software selectable input gain on microphone input Audio interfaces Line output and D/A conversion typical values Parameter Value 2.39 0.844 0.745 Full Scale Output Voltage (Peak-to-peak) unloaded * Analog output impedance Frequency response (-3dB) @ 48 kHz sample rate PCM Output signal-to-noise ratio (SNR) Dynamic Range (16 bit theoretical) Output Total Harmonic Distortion (THD @ -3dBFS) Interchannel Isolation (Stereo Cross Talk) Unit VPP VRMS dBu tbd 20..21500 Ω Hz >92 dB 96 dB 0.029 Better -66 dB *Output level (software controllable) set to max. Mechanical Dimensions Weight 14 grams / 0.494 oz. Min. 950 000h acc. to MIL217F at 40° Parameter Length Complete Printed Circuit Board 56.1 2.2 Height Width Unit 33.0 1.3 mm inch mm inch mm inch Connector height above PCB component side 11.44 0.45 1.27 0.05 8.9 0.35 Connector height above PCB rear side 1.27 0.05 mm inch Component height max above PCB 5.6 0.22 mm inch Printed Circuit Board only Technical Data 14 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 MTBF calculations Parameter Value MTBF calculated according to Calculated Supply Voltage Calculated Temperature (ambient) Environmental Calculated Temperature (inside device, e.g. Barix Instreamer) VDC °C °F °C °F Calculation for Ground Mobile Device Calculation for Ground Fix Device TBD 950000 hours hours Parameter Operating Temperature Range Operating Humidity Range (non-condensing) Storage Temperature Range Storage Humidity Range (non-condensing) Core frequency versus Temperature variation (CPU load: 100%) Unit MIL217F 3.3 25 77 40 104 Value Unit -20…+65 -4…149 0..70 0...+70 32....158 0...70 °C °F °C °F f 1300 (MHz) 1100 900 700 500 300 100 -40 -30 -20 -10 0 5 10 15 20 25 30 35 40 45 50 55 60 65 t (° C) Core frequency versus Temperature variation (CPU load: 50%) Core 1 freq.(MHz) Core 2 freq.(MHz) Core 3 freq.(MHz) Core 4 freq.(MHz) 1300 (MHz) 1100 900 700 500 300 100 -40 -30 -20 -10 0 5 10 15 20 25 30 35 40 45 50 55 60 65 t (° C) Core 1 freq.(MHz) Core 2 freq.(MHz) Core 3 freq.(MHz) Core 4 freq.(MHz) Technical Data 15 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Certifications / Compliances Complies with RoHS FCC ID RED CE FCC WARNING This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance c ould void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna. Changes or modifications made to this equipment not expressly approved by (BARIX) may void the FCC authorization to operate this equipment FCC ID: 2APAE-IPAM400 Technical Data 16 Preliminary Development – BARIX IP AUDIO MODULE 400 – V 02.20 – 9.April.2018 Ordering In formation IPAM 400 2017.9xxx © 2017 Barix AG, Dübendorf, Switzerland. All rights reserved. All trademarks belong to their respective owners and are used for reference only. Barix and Barix IP Audio Module are trademarks of Barix AG, Switzerland and are registered in certain countries. Newest information about our devices is available via download from our website, www.barix.com. We explicitly reserve the right to change and improve the product without notice. Barix AG Ringstrasse 15a 8600 Dübendorf SWITZERLAND +41 43 433 22 11 +41 44 274 28 49 www.barix.com sales@barix.com support@barix.com
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