Bluetooth Transmit Data Module User Manual EH-MA41 Brand Name:Ehong FCC ID:2ACCRMA41 Shanghai Ehong Technologies Inc
Bluetooth Transmit Data Module Description: EH-MA41 is a class 2 Bluetooth® 3.0 module. It is a highly integrated and sophisticated module which contains all the necessary elements from radio to antenna and a fully implemented protocol stack. It is an ideal solution for integrating Bluetooth® into various products with limited knowledge of Bluetooth® and RF technologies. Features: Bluetooth V3.0 TX power +5.
Bluetooth Transmit Data Module 1. EH-MA41 Product numbering A. B. C. D. EH ------------MA41 -----------X -----------V ------------ EH-MA41-X-V1.0 Company Name(EHong) Module Name N (no) Hardware revision 2. Pinout and Terminal Description 2.1.
Bluetooth Transmit Data Module 11 PCM_OUT 12 VDD_3V3 CMOS input, with weak internal pull-down Bi-directional with programmable strength internal pull-up/down Bi-directional with programmable strength internal pull-up/down CMOS input with weak internal pull-up input with weak internal pull-down Bi-directional with weak internal pull-down Bi-directional with weak internal pull-down CMOS Input, with weak internal pull-down CMOS output, tristate, with weak internal pull-down 3V3 power input 13 GND Groun
Bluetooth Transmit Data Module 24 USB_D+ Bi-directional 25 USB_D- 26 PIO2 27 PIO3 28 PIO5 29 PIO4 30 SPI_CSB 31 SPI_MISO 32 AIO0 Bi-directional Bi-directional with programmable strength internal pull-up/down Bi-directional with programmable strength internal pull-up/down Bi-directional with programmable strength internal pull-up/down Bi-directional with programmable strength internal pull-up/down CMOS input with weak internal pull-up CMOS output, tri-state, with weak internal pull-down B
Bluetooth Transmit Data Module 3. Power Supply The module accepts a 3.3V DC power input. Power supply should guarantee good ripple suppression and enough current. . 4. Reset The module may be reset from several sources: RESETB pin, power-on reset, a UART break character or via software configured watchdog timer. The RESETB pin is an active low reset and is internally filtered using the internal low frequency clock oscillator. A reset will be performed between 1.5 and 4.0ms following RESETB being active.
Bluetooth Transmit Data Module 6. PIO EH-MA41 has a total of 10 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. Note: All PIO lines are configured as inputs with weak pull-downs at reset. Any of the PIO lines can be configured as interrupt request lines or as wake-up lines from sleep modes. 7.
Bluetooth Transmit Data Module 10. SPI interface The synchronous serial port interface (SPI) is used for flash/debug the module only. It can not be used for any user functionality. Please always design test points for this interface on the PCB in case that the module is needed to re-flash or flash-in-field in manufacture. 11. PCM interface PCM is a standard method used to digitize audio (particularly voice) for transmission over digital communication channels.
Bluetooth Transmit Data Module It supports 13-bit or 16-bit linear, 8-bit µ-law or A-law companied sample formats at 8k samples/s and can receive and transmit on any selection of three of the first four slots following PCM_SYNC.
Bluetooth Transmit Data Module 13. USB This is a full speed (12M bits/s) USB interface for communicating with other compatible digital devices. The module acts as a USB peripheral, responding to request from a master host controller, such as a PC. The USB interface is capable of driving a USB cable directly. No external USB transceiver is required. The device operates as a USB peripheral, responding to requests from a master host controller such as a PC. Both the OHCI and the UHCI standards are supported.
"Attention ‐ Limited Modular Approval This RF Module is strictly limited to integration into battery-poerated host devices. Integration into devices that are directly or indirectly connected to AC lines may be added via Class II Permissive Change." (OEM) Integrator has to assure compliance of the entire end‐product incl. the integrated RF Module. Additional measurements (15B) and/or equipment authorizations(e.
