PRELIMINARY
CYW43340
Bluetooth Key Features
■ Complies with Bluetooth Core Specification Version 4.0 with
provisions for supporting future specifications.
■ Interface support: Host Controller Interface (HCI) using a high-
speed UART interface and PCM for audio data
■ Bluetooth Class 1 or Class 2 transmitter operation
■ Low power consumption improves battery life of handheld
devices.
■ Supports extended Synchronous Connections (eSCO), for
enhanced voice quality by allowing for retransmission of
dropped packets.
■ Supports multiple simultaneous Advanced Audio Distribution
Profiles (A2DP) for stereo sound.
■ Adaptive Frequency Hopping (AFH) for reducing radio
frequency interference
■ Automatic frequency detection for standard crystal and TCXO
values
General Features
■ Supports battery voltage range from 2.9V to 4.8V supplies with
■ Security:
internal switching regulator.
❐ WPA™ and WPA2™ (Personal) support for powerful encryp-
tion and authentication
■ Programmable dynamic power management
■ 3072-bit OTP for storing board parameters
❐ AES in WLAN hardware for faster data encryption and IEEE
802.11i compatibility
❐ Reference WLAN subsystem provides Cisco® Compatible
Extensions (CCX, CCX 2.0, CCX 3.0, CCX 4.0, CCX 5.0)
■ Routable on low–cost 1x1 PCB stack–ups
❐ Reference WLAN subsystem provides Wi–Fi Protected Set-
up (WPS)
■ 141-ball WLBGA package(5.67 mm × 4.47 mm, 0.4 mm pitch)
■ Worldwide regulatory support: Global products supported with
worldwide homologated design
Figure 1. Functional Block Diagram
VIO
VBAT
5 GHz WLAN Tx
FEM or
WL_REG_ON
WLAN
Host I/F
WL_IRQ
SDIO*
T/R
5 GHz WLAN Rx
Switch
HSIC
2.4 GHz WLAN + Bluetooth Tx/Rx
CYW43340
CBF
CLK_REQ
BT_REG_ON
PCM/I2S
BT_DEV_WAKE
BT_HOST_WAKE
UART
Bluetooth
Host I/F
IoT Resources
Cypress provides a wealth of data at http://www.cypress.com/internet-things-iot to help you to select the right IoT device for your
design, and quickly and effectively integrate the device into your design. Cypress provides customer access to a wide range of
information, including technical documentation, schematic diagrams, product bill of materials, PCB layout information, and software
updates. Customers can acquire technical documentation and software from the Cypress Support Community website
(http://community.cypress.com/).
Document Number: 002-14943 Rev. *L
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