BCM43907 Preliminary Data Sheet
Overview
Section 1: Overview
Introduction
The Broadcom Ltd. BCM43907 is a single-chip device that provides the highest level of integration for an
embedded system-on-a-chip with integrated IEEE 802.11 a/b/g/n MAC/baseband/radio and a separate ARM
Cortex-R4 applications processor. It provides a small form-factor solution with minimal external components to
drive down cost for mass volumes and allows for an embedded system with flexibility in size, form, and function.
Comprehensive power management circuitry and software ensure that the system can meet the needs of highly
embedded systems that require minimal power consumption and reliable operation.
Figure 2 shows the interconnect of all the major physical blocks in the BCM43907 and their associated external
interfaces, which are described in greater detail in Section 5: “Applications Subsystem External Interfaces,” on
page 30.
Figure 2: Block Diagram and I/O
BCM43907
SPI Flash
GPIO[16:0]
2x 2-Wire UART
4-Wire UART
2x I2S
RF TX
RF RX
APPS Subsystem
WLAN Subsystem
ARM Cortex-R4
320 MHz
32 KB I-cache
32 KB D-cache
ARM Cortex-R4
160 MHz
448 KB ROM TCM
576 KB SRAM TCM
2x SPI/BSC
2x BSC
Switch Control
Antenna Diversity
JTAG/SWD
2 MB SRAM
640 KB ROM
802.11n
1x1
2.4 GHz and 5 GHz
10/100 Ethernet
SDIO 3.0/gSPI
USB 2.0
VDDIOs
GND
WAKE
Broadcom®
March 12, 2016 • 43907-DS104-R
Page 15
BROADCOM CONFIDENTIAL
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