mc33596 Freescale Semiconductor, Inc, mc33596 Datasheet - Page 35

• Manufacturer Part Number: mc33596
• Description: Pll Tuned Uhf Receiver For Data Transfer Applications
• Manufacturer: Freescale Semiconductor, Inc

17.2 Receive Mode
The receiver is either waiting for an RF telegram, or is receiving one. Four different processes are possible,
as determined by the values of the DME and SOE bits. A state diagram describes the sequence of
operations in each case.
17.2.1 Data Manager Disabled and Strobe Oscillator Enabled
Raw received data are sent directly on the MOSI line.
State 0: The receiver is off, but the strobe oscillator and the off counter are running. Forcing the STROBE
pin low maintains the system in this state.
Freescale Semiconductor
STROBE
STROBE
CONFB
CONFB
SEB
SEB
Figure 29. Second Valid Sequence from Standby/LVD Mode to Configuration Mode
Figure 28. First Valid Sequence from Standby/LVD Mode to Configuration Mode
If the STROBE pin is tied to a high level before switching to receive mode,
the receiver does not go through an off or standby state.
STROBE = 1
SPI Startup Time
SPI Startup Time
Figure 30. Receive Mode, DME = 0, SOIE = 1
MC33596 Data Sheet, Rev. 3
STROBE = 0
Off Counter = ROFF[2:0]
Raw Data on MOSI
or STROBE = 1
10 μs (Maximum)
State 0b
State 0
NOTE
Off
On
Figure 30
shows the state diagram.
STROBE = 0
On Counter = RON[3:0]
and STROBE ≠ 1
SPI Deselected
Controller
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