TDA5150 Datasheet, PDF (55/106 Pages) Infineon Technologies AG – On-chip, high resolution fractional-N synthesizer and Sigma-Delta modulator with ASK, FSK, GFSK options

TDA 5150
TDA 5150 Functional Description
Power-On-Reset
Transmit
command
[EN = 1]
&
[Activity on SCK ]
(Æ clock pulses )
XOSC_ENABLE
SLEEP = 1
Timeout = 1
or
GO2STDBY = 1
EN = 1
SLEEP
STANDBY
EN = 0
PLL_ENABLE
(PA OFF)
PA OFF during
frequency hop
SCK edge
detected
EN = 0
and
TXCFG.B = 0
Timeout = 1
and
TXCFG.B = 1
TRANSMIT
(PA ON)
PA ON during
frequency hop
Figure 19 Simplified State Diagram of the TDA 5150
Data Sheet
55
V 1.0, July 2009