![Texas Instruments CC430F5133 Скачать руководство пользователя страница 15](http://html1.mh-extra.com/html/texas-instruments/cc430f5133/cc430f5133_manual_1095452015.webp)
BIAS
PA
RBIAS
RF_XIN
RF_XOUT
XOSC
LNA
0
90
FREQ
SYNTH
ADC
D
E
M
O
D
U
L
A
T
O
R
P
A
C
K
E
T
H
A
N
D
L
E
R
R
X
F
IF
O
T
X
F
IF
O
IN
T
E
R
F
A
C
E
T
O
M
C
U
RADIO CONTROL
RF_P
RF_N
RC OSC
ADC
M
O
D
U
L
A
T
O
R
ECCN 5E002 TSPA - Technology / Software Publicly Available
CC430F6137, CC430F6135, CC430F6127, CC430F6126, CC430F6125
CC430F5137, CC430F5135, CC430F5133
www.ti.com
SLAS554H – MAY 2009 – REVISED SEPTEMBER 2013
Short-Form Description
Sub-1-GHz Radio
The implemented sub-1-GHz radio module is based on the industry-leading CC1101, requiring very few external
components.
Figure 1
shows a high-level block diagram of the implemented radio.
Figure 1. Sub-1-GHz Radio Block Diagram
The radio features a low-IF receiver. The received RF signal is amplified by a low-noise amplifier (LNA) and
down-converted in quadrature to the intermediate frequency (IF). At IF, the I/Q signals are digitized. Automatic
gain control (AGC), fine channel filtering, demodulation bit and packet synchronization are performed digitally.
The transmitter part is based on direct synthesis of the RF frequency. The frequency synthesizer includes a
completely on-chip LC VCO and a 90° phase shifter for generating the I and Q LO signals to the down-
conversion mixers in receive mode.
The 26-MHz crystal oscillator generates the reference frequency for the synthesizer, as well as clocks for the
ADC and the digital part.
A memory mapped register interface is used for data access, configuration, and status request by the CPU.
The digital baseband includes support for channel configuration, packet handling, and data buffering.
For complete module descriptions, see the
CC430 Family User's Guide
(
SLAU259
).
Copyright © 2009–2013, Texas Instruments Incorporated
Submit Documentation Feedback
15
Product Folder Links:
CC430F6137 CC430F6135 CC430F6127 CC430F6126 CC430F6125 CC430F5137
CC430F5135 CC430F5133