CYW4343X
Single-Chip IEEE 802.11 b/g/n MAC/
Baseband/Radio with Bluetooth 4.1,
an FM Receiver, and Wireless Charging
The Cypress CYW4343X is a highly integrated single-chip solution and offers the lowest RBOM in the industry for smartphones
smartphones wearables, tablets, and a wide range of other portable devices. The chip includes a 2.4 GHz WLAN IEEE 802.11 b/g/n
MAC/baseband/radio, Bluetooth 4.1 support, and an FM receiver. In addition, it integrates a power amplifier (PA) that meets the out-
put power requirements of most handheld systems, a low-noise amplifier (LNA) for best-in-class receiver sensitivity, and an internal
transmit/receive (iTR) RF switch, further reducing the overall solution cost and printed circuit board area.
The WLAN host interface supports gSPI and SDIO v2.0 modes, providing a raw data transfer rate up to 200 Mbps when operating in
4-bit mode at a 50 MHz bus frequency. An independent, high-speed UART is provided for the Bluetooth/FM host interface.Using
advanced design techniques and process technology to reduce active and idle power, the CYW4343X is designed to address the
needs of highly mobile devices that require minimal power consumption and compact size. It includes a power management unit that
simplifies the system power topology and allows for operation directly from a rechargeable mobile platform battery while maximizing
battery life.
The CYW4343X implements the world’s most advanced Enhanced Collaborative Coexistence algorithms and hardware mecha-
nisms, allowing for an extremely collaborative WLAN and Bluetooth coexistence.
Figure 1. CYW4343X System Block Diagram
VDDIO VBAT
WL_REG_ON
WLAN
WL_IRQ
Host I/F
SDIO*/SPI
2.4 GHz WLAN +
CLK_REQ
Bluetooth TX/RX
BPF
CYW4343X
BT_REG_ON
PCM
Bluetooth
Host I/F
BT_DEV_WAKE
BT_HOST_WAKE
FM
RX
UART
I2S
FM RX
Host I/F
Stereo Analog Out
Cypress Semiconductor Corporation
Document No. 002-14797 Rev. *H
•
198 Champion Court
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San Jose, CA 95134-1709
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408-943-2600
Revised October 19, 2016