PRELIMINARY
CYW43438
■ Security:
General Features
■ Supports a battery voltage range from 3.0V to 4.8V with an
❐ WPA and WPA2 (Personal) support for powerful encryption
and authentication.
internal switching regulator.
❐ AES in WLAN hardware for faster data encryption and IEEE
■ Programmable dynamic power management.
802.11i compatibility.
■ 4 Kbit One-Time Programmable (OTP) memory for storing
❐ Reference WLAN subsystem provides Cisco Compatible Ex-
tensions (CCX, CCX 2.0, CCX 3.0, CCX 4.0, CCX 5.0).
board parameters.
❐ Reference WLAN subsystem provides Wi–Fi Protected Set-
■ Can be routed on low-cost 1 x 1 PCB stack-ups.
up (WPS).
■ 63-ball WLBGA package (4.87 mm × 2.87 mm, 0.4 mm
■ Worldwide regulatory support: Global products supported
pitch).
with worldwide homologated design.
Figure 1. CYW43438 System Block Diagram
VDDIO
VBAT
WL_REG_ON
WLAN
Host I/F
WL_IRQ
SDIO*/SPI
2.4 GHz WLAN +
Bluetooth TX/RX
CLK_REQ
BT_REG_ON
PCM
BPF
CYW43438
Bluetooth
Host I/F
BT_DEV_WAKE
BT_HOST_WAKE
FM
RX
UART
FM RX
Host I/F
Stereo Analog Out
Document No. Document Number: 002-14796 Rev. *K
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CYPRESS [ CYPRESS ]
