User's Manual
FWBD-2900 Product brief
FWBD-2900 Product brief
FWBD-2900 has 802.11N 2×2 radio supporting up to 300 Mbps data-rate
The FWBD-2900 is consisting of two major sections,
Digital section and Analog Section
DIGITAL SECTION
The section is made up of:
QCA9557
DDR2 Memory
Flash Memory
Power Supplies
QCA9557
The Qualcomm Atheros QCA9557 is a highly
integrated and feature-rich IEEE 802.11n 2x2 2.4/5
GHz System-on-a-Chip (SoC) for advanced WLAN
AP/router platforms.
The QCA9557 supports 802.11n operations up to
144.4 Mbps for 20 MHz and 300 Mbps for 40 MHz,
and 802.11a/b/g data rates.
Additional features include Low-Density Parity
Check (LDPC), Maximal Ratio Combining (MRC), Tx
Beamforming (TxBF), and On-Chip One-Time
Programmable (OTP) memory.
Power Supplies
The 48V/0.5A DC input voltage is regulated to the
following voltages for various purposes:
+1.2V for CPU core voltage
+3.3V for CPU, Flash, DDR
+5V RF
ANALOG SECTION
QCA9557 has integrated 2T2R MAC, BBP and RF.
Each TX/RX chain only needs out-of-band rejection
filters, Low noise power amplifier, Power amplifier
and a switch to switch between transmission and
reception mode. The switch and LNA on/off are
controlled by the QCA9557 BBP integra