CYW43570 MAC/Baseband/Radio Datasheet
Single-Chip 5G WiFi IEEE 802.11ac 2Ąż2 MAC/Baseband/Radio
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Single-Chip 5G WiFi IEEE 802.11ac 2Ă2 MAC/Baseband/Radio
with Integrated Bluetooth 4.1 and EDR
The Cypress CYW4343W1 is a complete dual-band (2.4 GHz and 5 GHz) 5G WiFi 2 Ă 2 MIMO MAC/PHY/Radio System-on-a-Chip.
This WiFi single-chip device provides a high level of integration with a dual-stream IEEE 802.11ac MAC/baseband/radio and Bluetooth
4.1 + enhanced data rate (EDR). In IEEE 802.11ac mode, the WLAN operation supports rates of MCS0âMCS9 (up to 256 QAM) in
20 MHz, 40 MHz, and 80 MHz channels for data rates up to 867 Mbps. In addition, all the IEEE 802.11a/b/g/n rates are supported.
Included on-chip are 2.4 GHz and 5 GHz transmitter power amplifiers and receiver low noise amplifiers.
The CYW4343W1 integrates several peripheral interfaces including USB 2.0 (Bluetooth), PCIe (Wi-Fi), and serial flash. For the
Bluetooth section, the host interface options are a high-speed 4-wire UART and USB 2.0 full-speed (12 Mbps).
The CYW4343W1 uses advanced design techniques and process technology to reduce active and idle power, and includes an
embedded power management unit that simplifies the system power topology.
The CYW4343W1 implements highly sophisticated enhanced collaborative coexistence hardware mechanisms and algorithms that
ensure that WLAN and Bluetooth collaboration is optimized for maximum performance.
This datasheet provides details on the functional, operational, and electrical characteristics for the Cypress CYW4343W1. It is
intended for hardware design, application, and OEM engineers.
Cypress Part Numbering Scheme
Cypress is converting the acquired IoT part numbers from Broadcom to the Cypress part numbering scheme. Due to this conversion,
there is no change in form, fit, or function as a result of offering the device with Cypress part number marking. The table provides
Cypress ordering part number that matches an existing IoT part number.
Table 1. Mapping Table for Part Number between Broadcom and Cypress
Broadcom Part Number
Cypress Part Number
Figure 1. Functional Block Diagram for PCIe (WLAN) and BT (USB 2.0) Interfaces
VIO VBATÂ **
* Not available in the P1xx design reference board.
** VBAT is the main power supply (ranges from 3.0V to 3.6V) to the chip.
Cypress Semiconductor Corporation â˘ 198 Champion Court
Document Number: 002-15054 Rev. *K
â˘ San Jose, CA 95134-1709 â˘ 408-943-2600
Revised Monday, October 15, 2018
IEEE 802.11X Key Features
â IEEE 802.11ac Draft compliant.
â Dual-stream spatial multiplexing up to
867 Mbps data rate.
â Supports 20, 40, and 80 MHz channels with optional SGI (256
â Full IEEE 802.11a/b/g/n legacy compatibility with enhanced
â Tx and Rx low-density parity check (LDPC) support for
improved range and power efficiency.
â Supports IEEE 802.11ac/n beamforming.
â On-chip power amplifiers and low-noise amplifiers for both
â Supports various RF front-end architectures including:
â Three antennas design: two separate antennas (Core0 and
Core1 to WLAN) and a separate antenna to Bluetooth.
â Optional support: two antennas with WLAN diversity and a
shared Bluetooth antenna.
â Internal fractional nPLL allows support for a wide range of
reference clock frequencies.
â Supports PCIe Gen2 interface but up to Gen1 transfer speed.
â OneDriverâ˘ software architecture for easy migration from
existing embedded WLAN and Bluetooth devices as well as
Bluetooth Key Features
â Complies with Bluetooth Core Specification Version 4.1 + EDR
with provisions for supporting future specifications.
â Bluetooth Class 1 or Class 2 transmitter operation.
â Supports extended synchronous connections (eSCO), for
enhanced voice quality by allowing for retransmission of
â Adaptive frequency hopping (AFH) for reducing radio
â Host controller interface (HCI) using a USB or high-speed
UART interface and PCM for audio data. HCI/UART interface
capable but not currently supported.
â USB 2.0 full-speed (12 Mbps) supported for Bluetooth.
â Low-power mode helps power consumption of the media
â Supports multiple simultaneous advanced audio distribution
profiles (A2DP) for stereo sound.
â Automatic frequency detection for standard crystal and TCXO
â Supports serial flash interfaces.
â Supports 3.3V power supplies with internal switching regulator.
â Programmable dynamic power management
â 484 bytes of user-accessible OTP for storing board parameters
â GPIOs supported: 16
â Package: 254-ball FCBGA
(10 mm Ă 10 mm, 0.4 mm pitch)
â WPA and WPA2 (personal) support for powerful encryption
â AES and TKIP in hardware for faster data encryption and
IEEE 802.11i compatibility
â Reference WLAN subsystem provides Cisco Compatible Ex-
tensions (CCX, CCX 2.0, CCX 3.0, CCX 4.0, CCX 5.0)
â Reference WLAN subsystem provides Wi-Fi protected setup
â Worldwide regulatory support: Global products supported with
worldwide homologated design.
Document Number: 002-15054 Rev. *K
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