EB35WM Bluetooth Stereo Audio Module EB35WM Datasheet Product Description The EB35WM Bluetooth stereo audio module is based on CSR BC05 chip BC57E687. The module has been integrated with most of the peripheral components and fully tuned to obtain best RF and audio performance, thus make it a simple plug and play solution for Bluetooth products design. This mass production proven module helps OEM customers to achieve high yield rate and reduce the time to market. EB35WM is complaint with Bluetooth V.0+EDR, and supports ADP, AVRCP, HS, HF profiles, it mainly targets on Bluetooth stereo applications like Bluetooth speakers, Car-kits, it has been designed with the stereo application specified requirements in mind. The embedded Kalimba DSP enables sound effects as echo cancelation, noise cancelation, SRS sound functions. The module also features a UART connection to let the master MCU to have the full access of the Bluetooth functions. Applications Stereo Speakers Stereo Headsets Stereo Car-kits Stereo Audio Dongles Microphones Features Complete Stereo Bluetooth Function Module Based on CSR BC05 chip BC57E687 Compliant with Bluetooth V.0+EDR Built-in Battery Charger Built-in.8V DC/DC Converter Highly integrated, small form factor Class RF with range up to 5m Embedded DSP for sound processing support Full Bluetooth functions through UART control High performance Integrated 6 bit codec for Stereo input and output Flexible design, custom functions supported 005-008 Gigawit Electronics Ltd. Version., 008-0- Page of 0
EB35WM Datasheet Electrical Specification Description Min/Typical/Max General RF Audio Supply voltage Supply current 5mA Audio Format SBC Operation temperature -0 ~ +60 RF Frequency 00 ~ 83MHZ RF Channels 79 Channels Bluetooth Spec. V.0+EDR Output Power Class Class TX Power 0dBm / +6dBm RX Sensitivity -90dBm Input level.0vrms Input impedance 0K Ohm Output level.0vrms Output impedance K Ohm Frequency response 0Hz ~ 0KHz( -3dB) Latency 00ms, Configurable Sampling accuracy.khz, 6bit S/N ratio 85dB THD <0.% @ KHz Dynamic range 8dB Channel separation 65dB Table []: Electrical Specification 005-008 Gigawit Electronics Ltd. Version., 008-0- Page of 0
EB35WM Datasheet Pin Assignments Figure []: Pin out Pin # Pin name Type Description P Ground power P Ground power 3 PCM_IN I Synchronous data input PCM_OUT O Synchronous data output 5 PCM_CLK I/O Synchronous data clock 6 PCM_SY I/O Synchronous data sync 7 SPI_CSB I/O Chip select for SPI bus, active low 005-008 Gigawit Electronics Ltd. Version., 008-0- Page 3 of 0
EB35WM Datasheet 8 SPI_MISO I/O SPI data out 9 SPI_CLK I/O SPI clock 0 SPI_MOSI I/O SPI data in I High Voltage Regulator Enable Input, to enable PIO6 I/O General purpose I/O 3 LED O LED driver, Open drain output LED0 O LED driver, Open drain output 5 P Ground Power 6 BAT_P O Lithium ion/polymer battery positive terminal. Battery charger output and input to switch-mode regulator 7 VDD_CHG I Lithium ion/polymer battery charger input 8.8V P.8V DC output 9 P DC input 0 MICBIAS A Microphone bias MICR- A Microphone input negative, right MICR+ A Microphone input positive, right 3 MICL- A Microphone input negative, left MICL+ A Microphone input positive, left 5 SPKR- A Speaker output negative, right 6 SPKR+ A Speaker output positive, right 7 P Audio 8 SPKL- A Speaker output negative, left 9 SPKL+ A Speaker output positive, left 30 P Ground Power 3 RF_OUT A RF signal output 3 P Ground Power 33 PIO0 I/O General purpose I/O 3 PIO I/O General purpose I/O 35 PIO I/O General purpose I/O 36 PIO3 I/O General purpose I/O 37 PIO I/O General purpose I/O 38 #RESET I Reset, active low 39 PIO I/O General purpose I/O 0 PIO0 I/O General purpose I/O PIO7 I/O General purpose I/O AIO I/O Analog programmable I/O 3 AIO0 I/O Analog programmable I/O 005-008 Gigawit Electronics Ltd. Version., 008-0- Page of 0
EB35WM Datasheet PIO I/O General purpose I/O 5 UART_RX I UART data input 6 UART_TX O UART data output 7 PIO9 I/O General purpose I/O 8 PIO5 I/O General purpose I/O 9 PIO I/O General purpose I/O 50 USB_D- I/O USB data input negative 5 USB_D+ I/O USB data input positive 5 PIO5 I/O General purpose I/O 53 PIO3 I/O General purpose I/O 5 PIO8 I/O General purpose I/O Table []: Pin assignments 005-008 Gigawit Electronics Ltd. Version., 008-0- Page 5 of 0
EB35WM Datasheet Physical Dimension Figure[]: Dimensions 005-008 Gigawit Electronics Ltd. Version., 008-0- Page 6 of 0
005-008 Gigawit Electronics Ltd. Version., 008-0- Page 7 of 0 EB35WM Datasheet Application Circuit Figure[3]: Application Schematic(With Battery) SPK-A-N SPK-A-P SPK-B-N SPK-B-P MIC-B-N MIC-B-P MIC-A-P ANT ANT C5 C6 VOL+ VOL- PLAY/PAUSE NEXT PREVIOUS LED0 LED MIC-A-N C7 MICBIAS PCM_IN 3 PCM_OUT PCM_CLK 5 PCM_SY 6 SPI_CSB 7 SPI_MISO 8 SPI_CLK 9 SPI_MOSI 0 PIO6 LED 3 LED0 5 BAT_P 6 VDD_CHG 7 9.8V 8 MICBIAS 0 MICR- MICR+ MICL- 3 MICL+ SPKR- 5 SPKR+ 6 7 SPKL- 8 SPKL+ 9 30 RF 3 3 PIO0 33 PIO 3 PIO 35 PIO3 36 PIO 37 RST 38 PIO 39 PIO0 0 PIO7 AIO AIO0 3 PIO UART_RX 5 UART_TX 6 PIO9 7 PIO5 8 PIO 9 USB_D- 50 USB_D+ 5 PIO5 5 PIO3 53 PIO8 5 U EB35WM R RED BLUE 70 R6 70 R5 VOL+ VOL- NEXT PREVIOUS PLAY/PAUSE VOL- VOL+ PLAY/PAUSE NEXT PREVIOUS ON/OFF R3 R R R R5 R6 R7 R8 R9 R0 R R Vin ON/OFF 3 Vout 5 U RT993 C 0.uF C3 C R3 VBAT BT BATTERY +5V D N8 D N8 D3 N8 VBAT VBAT C 0pF POWER HOLD C9 C8 uf POWER HOLD
005-008 Gigawit Electronics Ltd. Version., 008-0- Page 8 of 0 EB35WM Datasheet Figure[]: Application Schematic(Without Battery) SPK-A-N SPK-A-P SPK-B-N SPK-B-P MIC-B-N MIC-B-P MIC-A-P ANT ANT C5 C6 VOL+ VOL- PLAY/PAUSE NEXT PREVIOUS LED0 LED MIC-A-N C7 MICBIAS PCM_IN 3 PCM_OUT PCM_CLK 5 PCM_SY 6 SPI_CSB 7 SPI_MISO 8 SPI_CLK 9 SPI_MOSI 0 PIO6 LED 3 LED0 5 BAT_P 6 VDD_CHG 7 9.8V 8 MICBIAS 0 MICR- MICR+ MICL- 3 MICL+ SPKR- 5 SPKR+ 6 7 SPKL- 8 SPKL+ 9 30 RF 3 3 PIO0 33 PIO 3 PIO 35 PIO3 36 PIO 37 RST 38 PIO 39 PIO0 0 PIO7 AIO AIO0 3 PIO UART_RX 5 UART_TX 6 PIO9 7 PIO5 8 PIO 9 USB_D- 50 USB_D+ 5 PIO5 5 PIO3 53 PIO8 5 U EB35WM R RED BLUE 70 R6 70 R5 VOL+ VOL- NEXT PREVIOUS PLAY/PAUSE VOL- VOL+ PLAY/PAUSE NEXT PREVIOUS ON/OFF R3 R R R R5 R6 R7 R8 R9 R0 R R Vin ON/OFF 3 Vout 5 U RT993 C 0.uF C3 C R3 D N8 D N8 D3 N8 +5V VBAT C 0pF POWER HOLD C9 C8 uf POWER HOLD
EB35WM Datasheet 8 MIC-A-P C8 MIC-A-N C7 MIC-B-P C30 MIC-B-N C35 MICBIA R30.k R3.k C3 5p C8 5p C3 5p C36 5p L 5nH L3 5nH L 5nH L5 5nH C9 5p C37 5p R3 7.5k R33 7.5k IN L IN R 3 UA MC558CD 8 AUDIO STEREO LINE IN MIC_RP C6 uf MIC_RN MICBIAS C uf R3 K C 5pF MIC INPUT L6 5nH C5 5pF C 5pF MIC VCC R DC MID C0.7uF R AUDIO STEREO LINE OUT SPK-A-N SPK-A-P SPK-B-N SPK-B-P C C C C3 R8 R R3 R6 K K C6 33P K K C5 33P R3 3K 6 5 R7 3K R C 33P 3K VCC R0 C8 33P 3K UB 7 MC558CD C3 0U C 0U R9 M R M OUT R R0 39 C7 CAP 00n OUT L R5 39 C6 CAP 00n Figure[5]: Application Schematic 005-008 Gigawit Electronics Ltd. Version., 008-0- Page 9 of 0
EB35WM Datasheet Ordering Information Gigawit ID. Description EB35WM Bluetooth Stereo based on CSR BC05 chip BC57E687BEU Contact 捷电科技有限公司 Gigawit Electronics Limited 003 Overseas Scholars Building, South Keyuan Road Science Park, Nanshan District, 58057 Shenzhen, China Tel:+86-755-8639300, Fax:+86-755-863988 http://www.gigawit.com Revision History 007-- Version.0, Original version 008-0-0 Version., Update WM Pin outs and the application schematic 005-008 Gigawit Electronics Ltd. Version., 008-0- Page 0 of 0