802.11 b/g wifi CF module, Marvell 88w8385+88w8015

RM5 is an IEEE802.11b/g wifi proprietary CF module in 2.0cm x 2.0cm small form factor designed specifically for integration in application-specific devices (ASDs) used in vertical market. RM5 has Bluetooth coexistence function by directly connect to Bluetooth with another two control signals and no extra pull high /low resistor required. It provides the highest flexibility and extensibility to implement WiFi/Bluetooth coexistence. The small 2.0cm x 2.0cm dimension design can be easily integrated into the system with a board-to-board connector. WinCE 4.2/5.0 and Linux driver support enable ASD manufacturers to provide products that enjoy improved innovation and time to market through trouble-free WiFi integration.

  • 2.0cm x 2.0cm small dimension proprietary CF module is ideal for embedding into new ergonomic application-specific devices with a board-to-board connector.

  • WinCE4.2/5.0 and Linux driver support assure trouble-free WiFi integration.

  • Supports IEEE 802.11g/802.11b auto fallback data rate allowing inter-operability among multiple wifi networks.

  • Supports 802.11 power saving mode minimizing overall system power requirements.

  • Deep sleep mode support on WinCE5.0 and Linux is ideal for mobile computing applications.

  • Ad-Hoc power save mode on WinCE5.0 is ideal for machine-to-machine devices.

  • Supports WEP/WPA, WPA2-PSK/AES (on Linux only), IEEE802.1x (EAP-TLS, EAP-TTLS, LEAP), and LEAP providing advanced level of LAN security.

  • Supports WiFi and Bluetooth coexistence function on inCE5.0/Linux providing highest flexibility and extensibility to implement Bluetooth and WiFi integration.

  • One Hirose U.FL antenna connector enables receive diversity for flexible RF design.

  • RoHS compliance meets environment-friendly requirement.

Block Diagram

Evaluation Kit

Standard Conformance

IEEE 802.11b and IEEE 802.11g

Frequency Range

  • 11b Mode: 2.400 - 2.497 GHz

  • 11g Mode: 2.400 - 2.4836 GHz (US, Canada, ETSI, Japan)

Form Factor

Proprietary Compact Flash



Operation Voltage

3.3V ± 10%

Modulation Technique


  • DSSS with DBPSK, DQPSK, and CCK


  • OFDM with BPSK, QPSK, QAM, and 64QAM

  • DSSS with DBPSK, DQPSK, and CCK

Operating Range
(subject to the environment and antenna) 

  • Indoor up to 100 meter (328 ft)

  • Outdoor up to 400 meter (1312 ft)

Power Consumption

802.11b mode:

  • FTP Tx: 385mA (typical) ~ 470mA (max)

  • FTP Rx: 285mA (typical) ~ 350mA (max)

  • Stand by: 245mA (typical) ~ 285mA (max)

802.11g mode:

  • FTP Tx: 285mA (typical) ~ 450mA (max)

  • FTP Rx: 265mA (typical) ~ 330mA (max)

  • Stand by: 245mA (typical) ~ 285mA (max)

Power saving:

  • 50mA (typical) ~ 75mA (max) under Win CE Driver 3.2.8.

  • 24mA(typical) - 30mA(max) under Linux Driver 3.4.0. P2-16

Deep sleep mode: 5mA (typical) - 8mA(max) in Linux system.


One UFL ultra-miniature coaxial antenna connectors for diversity receive at 2.4GHz. Use Hirose pigtail to connect to a standard antenna.

B-B Connector

  • Stacking height 1.5mm, WALN side: Molex 55560-0501 (plug)

  • Host Side: Molex 54722-0501 (receptacle housing assembly)

Transmit Power Settings

  • 802.11b: 13K1dBm@1, 2, 5.5, and 11Mbps

  • 802.11g: 12.5K1.5dBm@6, 9, 12, 18, 24. 48 and 54Mbps


  • 802.11b: -89dBm@ 1Mbps, -86dBm@ 2Mbps, -85dBm@ 5.5Mbps, -82dBm@ 11Mbps

  • 802.11g: -82dBm@ 6Mbps, -81dBm@ 9Mbps, -79dBm@ 12Mbps, -77dBm@ 18Mbps, -74dBm@ 24Mbps, -70dBm@ 36Mbps, -66dBm@ 48Mbps, -65dBm@ 54Mbps

MAC Protocol

CSMA/CA with ACK architecture 32-bit MAC


  • 64-bit and 128-bit WEP Encryption

  • 802.1x Authentication


  • WPA2-PSK/AES only on Linux

Power Saving Mode

Support IEEE 802.11 power saving mode (enable or disable)

Deep Sleep Mode

Support on Win CE 5.0 and Linux

Ad-hoc Power Saving Mode

Support on Win CE 5.0

Bluetooth Coexistence

Support on Win CE 5.0 and Linux


Support on Linux

Operation Systems Supported

Linux and Win CE 4.2/5.0

Wi-Fi Alliance

WECA compliant


20.0mm(L) х 20.0mm (W) х 3.5mm (H)

Storage Temperature Range

-20°C ~ +80°C

Operation Temperature Range

0°C - 60°C

EMC Certificate

  • FCC part 15 (USA)

  • ETSI EN300 328 (Europe)

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