MC33592FTA Datasheet, PDF (7/28 Pages) Motorola, Inc – PLL Tuned UHF Receiver for Data Transfer Applications

Freescale Semiconductor, Inc.
DATA MANAGER
DME=1, HE=1
Figure 9 : Telegrams with tone
DME=1, HE=0
Tone
Tone detected
Tone
Tone detected
Tone
Header Data EOM
RF signal
Data
SPI output
Data EOM
RF signal
Data
SPI output
RECEIVER START-UP DELAY
A settling time (1ms typ.) is required when entering into Wait mode. figure 10.
Figure 10 : Wait usable window
Sleep
Run
Sleep
Run
Settling
time
ID
ID
ID
ID
ID
ID
ID
ID
ID detected
DATA MANAGER
This block has five purposes:
- ID detection,
- Header recognition,
- Clock recovery,
- Output data and recovered clock on SPI port,
- End-of-Message detection.
Table 2 details some ROMEO2 features versus the bits DME and SOE values.
DME
0
1
SOE
0
1
0
1
Table 2: ROMEO2 features versus DME and SOE
Timer
ROMEO2
kept in Run mode by
Microcontroller
woken-up by
External control by
STROBE pin
Internal and external
control by STROBE pin
External control by
STROBE pin
Internal and external
control by STROBE pin
STROBE pin
STROBE pin
ID detection
and STROBE pin
Raw data
Message Detection
word
Data clock
MOTOROLA
MC33592 Technical Data
7
For More Information On This Product,
Go to: www.freescale.com