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Cypress Semiconductor Electronic Components Datasheet

CYW43438 Datasheet

Single-Chip IEEE 802.11ac b/g/n MAC/Baseband/Radio

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PRELIMINARY
CYW43438
Single-Chip IEEE 802.11 b/g/n MAC/Baseband/
Radio with Integrated Bluetooth 4.2
The Cypress CYW43438 is a highly integrated single-chip solution and offers the lowest RBOM in the industry for smartphones,
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,
and Bluetooth 4.2. In addition, it integrates a power amplifier (PA) that meets the output 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 host interface.
Using advanced design techniques and process technology to reduce active and idle power, the CYW43438 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 CYW43438 implements the world’s most advanced Enhanced Collaborative Coexistence algorithms and hardware
mechanisms, allowing for an extremely collaborative WLAN and Bluetooth coexistence.
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
BCM43438
BCM43438KUBG
Broadcom Part Number
CYW43438
CYW43438KUBG
Cypress Part Number
Features
IEEE 802.11x Key Features
Single-band 2.4 GHz IEEE 802.11b/g/n.
Support for 2.4 GHz Broadcom TurboQAM® data rates (256-
QAM) and 20 MHz channel bandwidth.
Integrated iTR switch supports a single 2.4 GHz antenna
shared between WLAN and Bluetooth.
Supports explicit IEEE 802.11n transmit beamforming.
Tx and Rx Low-density Parity Check (LDPC) support for
improved range and power efficiency.
Supports standard SDIO v2.0 and gSPI host interfaces.
Supports Space-Time Block Coding (STBC) in the receiver.
Integrated ARM Cortex-M3 processor and on-chip memory
for complete WLAN subsystem functionality, minimizing the
need to wake up the applications processor for standard
WLAN functions. This allows for further minimization of
power consumption, while maintaining the ability to field-
upgrade with future features. On-chip memory includes 512
KB SRAM and 640 KB ROM.
OneDriversoftware architecture for easy migration from
existing embedded WLAN and Bluetooth devices as well as
to future devices.
Bluetooth and FM Key Features
Qualified for Bluetooth Core Specification 4.2
QDID: 100820
Declaration ID: D035240.
Supports Bluetooth 4.2's LE Secure Connections
Bluetooth Class 1 or Class 2 transmitter operation.
Supports extended Synchronous Connections (eSCO), for
enhanced voice quality by allowing for retransmission of
dropped packets.
Adaptive Frequency Hopping (AFH) for reducing radio fre-
quency interference.
Interface support — Host Controller Interface (HCI) using a
high-speed UART interface and PCM for audio data.
Low-power consumption improves battery life of handheld
devices.
Supports multiple simultaneous Advanced Audio Distribution
Profiles (A2DP) for stereo sound.
Automatic frequency detection for standard crystal and
TCXO values.
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 002-14796 Rev. *L
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 24, 2018


Cypress Semiconductor Electronic Components Datasheet

CYW43438 Datasheet

Single-Chip IEEE 802.11ac b/g/n MAC/Baseband/Radio

No Preview Available !

PRELIMINARY
CYW43438
General Features
Supports a battery voltage range from 3.0V to 4.8V with an
internal switching regulator.
Programmable dynamic power management.
4 Kbit One-Time Programmable (OTP) memory for storing
board parameters.
Can be routed on low-cost 1 x 1 PCB stack-ups.
63-ball WLBGA package (4.87 mm × 2.87 mm, 0.4 mm
pitch).
Security:
WPA and WPA2 (Personal) support for powerful encryption
and authentication.
AES in WLAN hardware for faster data encryption and IEEE
802.11i compatibility.
Reference WLAN subsystem provides Cisco Compatible Ex-
tensions (CCX, CCX 2.0, CCX 3.0, CCX 4.0, CCX 5.0).
Reference WLAN subsystem provides Wi–Fi Protected Set-
up (WPS).
Worldwide regulatory support: Global products supported
with worldwide homologated design.
Figure 1. CYW43438 System Block Diagram
VDDIO VBAT
WLAN
Host I/F
Bluetooth
Host I/F
WL_REG_ON
WL_IRQ
SDIO*/SPI
CLK_REQ
BT_REG_ON
PCM
BT_DEV_WAKE
BT_HOST_WAKE
UART
CYW43438
2.4 GHz WLAN +
Bluetooth TX/RX
BPF
Document Number: 002-14796 Rev. *L
Page 2 of 91


Part Number CYW43438
Description Single-Chip IEEE 802.11ac b/g/n MAC/Baseband/Radio
Maker Cypress Semiconductor
Total Page 30 Pages
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