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FCCID:2ACCRMB05
EH-MB05
Shanghai Ehong Technologies Inc
EH-MB05
Bluetooth® technology audio module
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Bluetooth radio
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Support profiles
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User interface
- Send AT command over UART
- Firmware upgrade over USB
- With SPP service active: 560kbps transmission
- PCM interface (I2S,SPDIF)
- I2C interface(Master )
Audio codec
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General I/O
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• The operation distance >20cm
Fully embedded Bluetooth® v3.0 +EDR
Class2 module
128-bit encryption security
Range up to 15m
Multipoint capability(7 transmit data devices
connected at the same time)
SPP (Master and slave)
iAP (ipod accessory protocol)
HFP ,A2DP,AVRCP,HID(Salve)
speed (UART)
16bit internal stereo codec :95dB SNR for DAC
64MIPS Kalimba DSP coprocessor
Support Apt-X ,AAC, Apt-XLL,SBC codec
11 general purpose I/Os
2 analogue I/O
FCC and Bluetooth® qualified
Single voltage supply: 3.3V typical
Small form factor: 23.24 x 11.93 x 2.2mm
Operating temperature range: -40 °C to 85 °C
Version 2.0
July 21 2014
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Summary of Contents for Ehong EH-MB05
- Page 1 FCC and Bluetooth® qualified • Single voltage supply: 3.3V typical • Small form factor: 23.24 x 11.93 x 2.2mm • Operating temperature range: -40 °C to 85 °C • • The operation distance >20cm Version 2.0 July 21 2014 Shanghai Ehong Technologies Inc...
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Page 2: Table Of Contents
Bluetooth Audio Module 1. Contents Description ................................4 Application................................. 4 EH-MB05 Product numbering ..........................4 Electrical Characteristic ............................5 4.1. Recommend operation conditions ......................... 5 Absolute Maximum Rating ..........................5 4.2. 4.3. Power consumptions ............................6 4.4. Input/output Terminal Characteristics ......................6 4.4.1. - Page 3 OUNTING ATTERN EVIATION 18: C ......................25 IGURE LEARANCE AREA OF ANTENNA 19: A ......................26 IGURE NTENNA REFERENCE DESIGN 20: PI ......................26 IGURE MATCH NETWORK EXAMPLE 21: R ....................27 IGURE ECOMMENDED EFLOW ROFILE Shanghai Ehong Technologies Inc...
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Page 4: Description
Bluetooth Audio Module 1. Description The EH-MB05 is an easy to use Bluetooth module, compliant with Bluetooth v3.0+EDR. The module provides complete RF platform in a small form factor. The EH-MB05 enables electronic devices with wireless connectivity, not requiring any RF experience or expertise for integration into the final product. -
Page 5: Electrical Characteristic
Storage Temperature Operating Temperature °C PIO Voltage -0.4 +3.6 -0.4 +1.57 AIO Voltage -0.4 +3.6 VDD Voltage -0.4 +3.6 USB_DP/USB_DN Voltage VDD+0. Other Terminal Voltages except RF -0.4 Table 2: Absolute Maximum Rating Recommended Operating Conditions Shanghai Ehong Technologies Inc... -
Page 6: Power Consumptions
= -4.0mA 0.75xVDD Input and Tri-state Current input leakage current at V =VDD or 0V -100 tri-state output leakage current at V =VDD -100 or 0V With strong pull-up -100 μA With strong pull-down Shanghai Ehong Technologies Inc... -
Page 8: Internal Codec Digital To Analogue Converter
Analogue Gain Resolution = 3dB Analogue Gain Output voltage full swing (differential) Resistive Ω Allowed Load Capacitive 0.01 THD+N 100kΩ load THD+N 16Ω load SNR (Load=16Ω, 0dBFS input relative to digital silence) Table 7: Digital to Analogue Converter Shanghai Ehong Technologies Inc... -
Page 9: Pinout And Terminal Description
Bluetooth Audio Module 5. Pinout and Terminal Description 5.1. Pin assignment Figure 1： Pinout of EH-MB05 Symbol I/O Type Description Ground Ground Active LOW RESETB, input debounced CMOS input with weak so must be low for >5ms to cause a... - Page 10 1.5K pull up resistor USB_DN Bi-directional USB data minus Ground Ground Bi-directional with PIO9 programmable strength Programmable input/output line internal pull-up/down Bi-directional with PIO14 programmable strength Programmable input/output line internal pull-up/down PIO4 Programmable input/output line Bi-directional with Shanghai Ehong Technologies Inc...
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Page 11: Physical Interfaces
The module DC3.3V power input. Power supply pin connection capacitor to chip and pin as far as possible close Capacitor decouples power to the chip Capacitor prevents noise coupling back to power plane. Figure 2： Power Supply PCB Design Shanghai Ehong Technologies Inc... -
Page 12: Reset
Table 9: Pin Status on Reset 6.3. PIO EH-MB05 has a total of 11 digital programmable I/O terminals. They are powered from VDD (3.3V). Their functions depend on firmware running on the device. PIO lines can be configured through software to have either weak or strong pull-ups or pull-downs. -
Page 13: Uart
PIO6, PIO7 and PIO8 can be used to form a master I C interface. The interface is formed using software to drive these lines. It is suited only to relatively slow functions such as driving a LCD, keyboard scanner or EEPROM. In the case, PIO lines need to be pulled up through 2.2KΩ resistors. Shanghai Ehong Technologies Inc... -
Page 14: Apple Ios Cp Reference Design
6.6.1.Apple iOS CP reference design The figures below give an indicative overview of what the hardware concept looks like. A specific MFI co-processor layout is available for licensed MFI developers from the MFI program. Figure 5 : Apple Co-processor 2.0C Shanghai Ehong Technologies Inc... -
Page 15: Digital Audio Interfaces
The interface for the digital audio bus shares the same pins as the PCM codec interface described in Table 11, which means each of the audio buses are mutually exclusive in their usage. Table 11 lists these alternative functions. Shanghai Ehong Technologies Inc... -
Page 16: Pcm
PCM encoded audio data over Bluetooth. Hardware on EH-MB05 allows the data to be sent to and received from a SCO connection. Up to three SCO connections can be supported by the PCM interface at any one time. - Page 17 SCK low time SCK to SD_OUT delay WS to SCK set up time WS to SCK hold time SD_IN to SCK set-up time SD_IN to SCK hold time Table 12 : Digital Audio Interface Slave Timing Shanghai Ehong Technologies Inc...
- Page 18 WS Frequency SCK to SD_OUT delay SCK to WS delay SD_IN to SCK set-up time SD_IN to SCK hold time Table 13 : Digital Audio Interface Master Timing Figure 10 : Digital Audio Interface Master Timing Shanghai Ehong Technologies Inc...
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Page 19: Iec 60958 Interface (Spdif)
The input and output stages of the SPDIF pins can interface to: ■ A 75Ω coaxial cable with an RCA connector, see Figure 11. ■ An optical link that uses Toslink optical components, see Figure 12. Figure 11: Example Circuit for SPDIF Interface (Co-Axial) Shanghai Ehong Technologies Inc... -
Page 20: Microphone Input
The audio input is intended for use in the range from 1μA @ 94dB SPL to about 10μA @ 94dB SPL. With biasing resistors R1 and R2 equal to 1kΩ, this requires microphones with sensitivity between about –40dBV and –60dBV. The microphone for each channel should be biased as shown in Figure 14. Shanghai Ehong Technologies Inc... -
Page 21: Analog Output Stage
The module has an internal USB pull-up resistor. This pulls the USB_DP pin weakly high when module is ready to enumerate. It signals to the USB master that it is a full speed (12Mbit/s) USB device. Shanghai Ehong Technologies Inc... - Page 22 In such case it is shared with the module PIO terminals. If detection is not needed (firmware already runs with USB, such as USB DFU or USB CDC), USB_ON is not needed. Shanghai Ehong Technologies Inc...
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Page 23: Eh-Mb05 Reference Design
Bluetooth Audio Module 7. EH-MB05 Reference Design Figure 17: Reference Design Shanghai Ehong Technologies Inc... -
Page 24: Mechanical And Pcb Footprint Characteristics
Figure 18: Recommended PCB Mounting Pattern (Unit: mm, Deviation:0.02mm)TOP View 9. RF Layout Guidelines EH-MB05 has an on-board PCB antenna. PCB design to ensure enough clearance area of antenna, area length is 1.6 times of antenna length, area width is 4 times of antenna width, the bigger the better if the space allows. - Page 25 Ask your PCB supplier to control the impedance of the feed line. For the antenna, When PCB antenna is used, matching networks shall be used to optimize the antenna’s signal strength. Use as many vias as possible to connect the ground planes nearby the antenna. Shanghai Ehong Technologies Inc...
- Page 26 Do it in the ground plane area, not in the clearance area. This is a degree of freedom to tune the antenna once the design is finished and taking into account all elements of the system (batteries, displays, covers, etc). Figure 21: PI match network example Shanghai Ehong Technologies Inc...
- Page 27 217 C. Cooling Zone (E) — The cooling ate should be fast, to keep the solder grains small which will give a longerlasting joint. Typical cooling rate should be 4 C. Shanghai Ehong Technologies Inc...
- Page 28 4.The host end product must include a user manual that clearly defines operating requirements and conditions that must be observed to ensure compliance with current FCC RF exposure guidelines. Ehong Technology Co., Ltd...
- Page 29 Ehong Technology Co., Ltd...
- Page 30 In accordance with FCC Part 15C, this module is listed as a Limited Modular Transmitter device. Therefore, the final host product must be submitted to [ShangHai Ehong Technology Co.,Ltd.] for confirmation that the installation of the module into the host is in compliance with the regulations of FCC and IC Canada.
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