User's Manual

Honeywell Confidential and Proprietary Revision –1.1 Page 5 of 15

2. Section2:

2.1 Overview:

RMWIFI-QC operates in the unlicensed 2.4 radio bands IEEE 802.11b/g, which

supports Direct Sequence Spread Spectrum (DSSS) 1 Mb/s and 2 Mb/s data rates,

Complementary Code Keyed (CCK) 5.5 Mb/s and 11 Mb/s data rates and 6Mb/s

to 54Mb/s OFDM .

RMWIFI-QC is based on RMWIFI-M5 module, which contains QC 4004A WIFI

system-on-chip. The QC 4004A have fully integrated RF Transceiver, low power

PA and application processor. Both TX and RX chain in the module incorporate

internal power control loops.

RMWIFI-QC carries onboard single supply monitor for 1.8V voltage supply with

optional module controlled external regulator enable control pin.

The module contains MK22FN1M0VLH12 Microcontroller and QCA4004 Radio.

The QCA4004 single-chip Radio provides a complete 2.4 GHZ & 5 GHz radio

interface between the antenna and the microcontroller. It comprises the analog

radio part, digital modulation and demodulation including time and frequency

synchronization, as well as data buffering. The differential to single ended TX &

RX path conversion is done using lumped balun. Antenna is connected to TX &

RX path using external 2.4 GHz antenna switch. 5 GHz part of the radio is disabled

and not used in this module.