Respironics Inc. 1127941BT User Manual
2ANZ-1127941BT | Module Integration
Respironics Inc. (Philips Respironics)
1001 Murry Ridge Lane
Murrysville PA 15668
Module Integration
This document describes how to integrate the TI WL1831MOD radio module into a final product with a
chip Antenna in a SISO system.
chip Antenna in a SISO system.
The WL1831MOD is a surface mount Bluetooth and Wi-Fi combo radio module in the WL18XX family
from Texas Instruments. The module data sheet can be found at the manufacturer’s web site below:
from Texas Instruments. The module data sheet can be found at the manufacturer’s web site below:
The module is shown below, along with the transmission line connecting it to the matching network and
chip antenna.
chip antenna.
The module connects back to the host through multiple interfaces. All of these interfaces operate at a
nominal supply voltage of 1.8V. The pin assignments of these signals are showing in Table 1 and Figure
1.
nominal supply voltage of 1.8V. The pin assignments of these signals are showing in Table 1 and Figure
1.
DC Input Power:
The radio module power is regulated internally by the module. Power is applied to the VBAT_IN
terminals with a voltage in the range of 2.9-4.8V. The I/O voltage of the module is set by applying 1.8V
to the VIO_IN Terminal.
terminals with a voltage in the range of 2.9-4.8V. The I/O voltage of the module is set by applying 1.8V
to the VIO_IN Terminal.
Slow Clock:
The radio requires a 32.768 kHz square wave input at the EXT_32K input terminal of the module.
Bluetooth UART:
The Bluetooth subsystem is controlled via an HCI 4-wire UART interface operating at 1.8V.