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MSM7712 Datasheet(PDF) 1 Page - OKI electronic componets

Part No. MSM7712
Description  Wireless LAN Baseband Controller
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Maker  OKI [OKI electronic componets]
Homepage  http://www.oki.com
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MSM7712 Datasheet(HTML) 1 Page - OKI electronic componets

 
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Oki Semiconductor
MSM7712
Wireless LAN Baseband Controller
DESCRIPTION
The MSM7712 is the first release in a series of wireless LAN baseband controllers, designated .XI (a suffix
of the IEEE P802.11 protocol). The MSM7712 integrates the baseband physical layer and the lower MAC
layers into a single IC that supports specific draft standards of the P802.11 specification. The architecture
targets optimum integration with maximum user flexibility, providing a migration path to low-cost mod-
ule handsets and access points. In accordance with all three P802.11 media, the MSM7712 directly sup-
ports frequency hopping (FH), spread spectrum, direct-sequence spread spectrum, and infrared
protocols., A board-level system contains the MSM7712, a radio, a 16-bit processor, and buffer memory
ICs.
The MSM7712 provides a seamless interface to the radio, hoist, processor, and memory subsystems. The
device directly interfaces with the PCMCIA R2.1 and ISA bus, with support for 16-bit data transfers. The
device can control antenna select, synthesizer programming, and power-save modes. The MSM7712 pro-
vides FH PLPC framing, with the FH modem on-board. A bypass mode allows support for other stan-
dards. MSM7712 firmware is available from Oki Semiconductor.
Portable handheld systems inherently require minimal current dissipation during operation and standby
modes. The MSM7712 offers low power consumption via its implementation of a 3-V core. Either 3-V or
5-V I/O are available for optimal RF and host-interface design.
The MSM7712 wireless LAN baseband controller is manufactured in Oki’s advanced Si-gate 0.5
µm
CMOS process for the best possible low-power performance.
FEATURES
• Support for specific IEEE P802.11 wireless LAN
draft standards
• Suitable for low-cost stations and access points
• PCMCIA compliant (version 2.1) interface
supporting 16-bit data transfers
• On-chip radio modem for high-throughput
data transfers
• Interface to radio providing antenna select,
power control, synthesizer programming
• Processor interface support for 80C86, 80C186,
V33, and V53A
• On-chip multi-port memory controller on chip
for local shared memory and simplified design
construction
•E2PROM interface to download host interface
configuration data and provide non-volatile
card parameter storage
• Low-power mode to minimize power
dissipation in batter applications.
• 5-V external and 3.3-V core operation
• 144-pin LQFP package, suitable for PCMCIA
Type II Cards (LQFP144-P-2020-0.50-K)


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