Brother Industries Ltd. T77H228 ユーザーズマニュアル

 

 
4.1 Hardware Requirements 
 
Form factor              

30 mm x30mm module with 6-pin W.T.B connector 

USB2.0 interface 

PCB    

4-layer design 

 

RF switch connector 

 
4.2 Hardware Architecture 
 
The T77H228 802.11b/g/n module is based on Broadcom BCM4319 solution which is with 

integrated 2.4GHz IEEE802.11 b/g/n (MAC/baseband/radio), power amplifiers (PA), and 

power management unit (PMU).This module is powered from the host (3.3V) and 

interfaces to the host with USB 2.0 signals and with two on-board antennas for diversity 

and one on-board 30 MHz XTAL. 

The functional block diagram is shown as below.