User's Manual

SiFLEX01 TRANSCEIVER MODULE
DATASHEET
The information in this document is subject to change without notice.
330-0026-R0.4 Copyright © 2010-2012 LS Research, LLC Page 11 of 23
Radio
The internal radio is based on the TI CC1101. It is a low-IF type with all digital AGC and filtering.
Memory mapped registers are used for data access and controlling radio characteristics.
Figure 5 CC430 Sub 1 GHz Radio Block Diagram
RF Power Amplifier
The SiFLEX01 module contains a TI CC1190 front-end chip. It is capable of 250mW output power.
When transmitting the PA_EN signal will be high and LNA_EN will be low, which is controlled by the
firmware using GPIO pins P1.0 and P1.1. When receiving PA_EN is low and LNA_EN is high. LNA
gang is be adjusted to a high or low setting with the HGM signal controlled by P5.5.
PA_EN
P1.0
LNA_EN
P1.1
HGM
P5.5
Operation
0
0
X
Shutdown
0
1
0
RX low gain
0
1
1
RX high gain
1
0
0
TX low gain
1
0
1
TX high gain
Table 2 Front-end control functions