User's Manual

BT860

Datasheet

Embedded Wireless Solutions Support Center:

http://ews-support.lairdtech.com

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

3 B

LOCK

IAGRAM AND

ESCRIPTIONS

Figure 1: BT860 Module block diagram

CYW20704A2

(Main chip)

The BT860 is based on CYW20704A2 dual mode chip. The chip is a single-chip radio with on-

chip LDO regulators and baseband IC for Bluetooth 2.4 GHz systems including EDR to

3 Mbps.

Dedicated signal and baseband processing is included for full Bluetooth operation. The chip

provides I

S/PCM and USB interfaces. There are two general purpose I/Os be configured for

proprietary of Cypress GCI used and a general purpose I/O can be configured for

scan/inquire/paging/data traffic of indicator. There three I/Os pins are controlled by

firmware.

Antenna BT860 – The antenna is a ceramic monopole chip antenna.

Band Pass

Filter

The band pass filter filters the out-of-band emissions from the transmitter to meet the

specific regulations for type approvals of various countries.

EEPROM There are 512 k bits EEPROM embedded on the BT860 module which can be used to store

parameters, such as BD_ADDR, USB enumeration information, maximum TX power, PCM

configuration, USB product ID, USB vendor ID, and USB product description. With that, the

BT860 module can support UHE/HCI Proxy mode.

Crystal The embedded 40 MHz crystal is used for generating the clock for the entire module.