P
R O D U C T
Dual-Band Modem IC (PHY)
for WLAN System Solutions
The PMB 8787 provides the complete modem
functionality for a dual-band wireless LAN chipset.
It contains the signal processing functionality for
both the DSSS/CCK and the OFDM modulation/
demodulation needed for an 802.11a/b/g compliant
system.
The PMB 8787 is designed to form an Infineon
WLAN chipset in combination with the PMB 8680
dual-band RF Transceiver, the PMB 8825 dual-band
Power Amplifier and the PMB 8789 MAC IC.
The device is fabricated in an advanced 0.13 µm
CMOS-technology and will be available in a
LFBGA-81 package.
B
R I E F
Features
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Advanced low power CMOS technology
for core and analog supply
WirelessLAN
Applications
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High data-rate wireless LAN
Supply voltage 3.3 V for MAC/RF interface and 1.5 V
Full support of 802.11a (54 Mbit@5 GHz) OFDM
Full support of 802.11g (54 Mbit@2.4 GHz) OFDM
Market proven 802.11b CCK/DSSS
signal processing
Data flow/low power architecture
Radar/CW Detection (802.11h)
Adaptive date rate selection due to
SNR measurement
Channel selection due to silence measurement
Proven high performance mixed signal blocks
(ADC/DAC, PLL)
Low power A/D Converter
PC card wireless LAN adapters
(Mini) PCI wireless LAN cards
CardBus wireless LAN adapters
Compact flash wireless LAN cards
USB wireless LAN adapters
Wireless LAN modules, access points, bridge
products, and point-to-multipoint systems
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P M B
8 7 8 7
Dual-Band Modem IC (PHY)
N e v e r
s t o p
t h i n k i n g .
P
R O D U C T
Block Diagram
OFDM - Module
MDI-RX/
TX Data
Bridge
OFDM PHY
Radar-Detect
OFDM FSM
AGC
Int./Dec.
B
R I E F
I/Q-DAC
I/Q-ADC
RSSI-ADC
MDI
MDI-MUX
TX-FSM
RF
3-Wire
Ant.-Sw.
RXEN
TXEN
PAON
PA-DAC
PA-ADC
RF-Conrtol
RX-FSM
CCK/CW
Detect
CCK
PHY
MMI_CCK
MMI
CLK22
Power-
Estimation
Resampling
22/20 MHz
MMI-APB
APB-Master
Features
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Modem data interface (MDI) to WLAN MAC
controller, PMB 8789
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Modem management interface (MMI) to WLAN MAC
controller, PMB 8789
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Serial 3 wire control interface to dual-band
RF transceiver PMB 8680
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Analog RX/TX IQ-interface
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JTAG Test Access Port (TAP)
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Engineering test interface for real time debugging
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Parallel control RF-port
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Integrated PLL
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Support of OFDM modulation/demodulation
6/9/12/18/24/36/54 Mbit/s rate according to
802.11a/g standard
Interpolation/Decimation
Automatic gain control
Channel tracking
Supports DSSS/CCK for 1/2/5.5 and 11 Mbit/s rate
according 802.11b standard
Simultaneous DSSS-/CCK- and OFDM-preamble
detection for 802.11g operation
Ordering Information
Please contact the local Infineon sales office for
dedicated information on our Wireless LAN products
Type
WLAN 802.11a/g PHY
Sales Code
PMB 8787
Package
P-LFBGA-81
How to reach us:
http://www.infineon.com
Published by
Infineon Technologies AG,
St.-Martin-Strasse 53,
81669 München
© Infineon Technologies AG 2003. All Rights Reserved.
Attention please!
The information herein is given to describe certain components
and shall not be considered as warranted characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not
limited to warranties of non-infringement, regarding circuits,
descriptions and charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms
and conditions and prices please contact your nearest
Infineon Technologies Office in Germany or our
Infineon Technologies Representatives worldwide.
Warnings
Due to technical requirements components may contain dan-
gerous substances. For information on the types in question
please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-
support devices or systems with the express written approval
of Infineon Technologies, if a failure of such components can
reasonably be expected to cause the failure of that life-support
device or system, or to affect the safety or effectiveness of that
device or system. Life-support devices or systems are intend-
ed to be implanted in the human body, or to support and/or
maintain and sustain and/or protect human life. If they fail, it is
reasonable to assume that the health of the user or other
persons may be endangered.
Printed in Germany
PS 03031.
NB
Published by Infineon Technologies AG