User Manual

1. Introduction
This document provides the hardware specification for RGM840 module. This module supports
802.11ac standard with 5GHz 4x4 MIMO, 4 spatial streams, transmit beamforming and etc. This
11ac RGMII module uses local memory and flash to fully offload the host processor on the main
board so only minimal software is required on the host for management purpose.
2. Block diagram
The block diagram of the module is shown in figure 1. As indicated in the diagram, this module
uses a proprietary RGMII over mPCIe interface and provides 4 U.FL antenna connectors for
cable antenna.
Figure 1. Block Diagram of the RGM840 module
RGMII over mPCIe
RGMII over mPCIe
I/F
DDR3
WPS
Input
WPS
Input
RGMI
I
RGMI
I
UART
UART
LEDs/
GPIOs/
HRST
LEDs/
GPIOs/
HRST
QT3840BC
QT2518B
FEM
FFE
M
FEM
FFE
M
FEM
FFE
M
FEM
FFE
M
U.FL
U.FL
64KB
Flash
SPI0