mc33596 Freescale Semiconductor, Inc, mc33596 Datasheet - Page 36

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

Controller
State 0b: The receiver is kept on by the STROBE pin or the on counter. Raw data are output on the MOSI
line.
For all states: At any time, a low level applied to CONFB forces the state machine to state 1.
17.2.2 Data Manager Disabled and Strobe Pin Control
Raw received data are sent directly on the MOSI line.
State 5: The receiver is in standby/LVD mode. For further information, see
Mode.” A high level applied to STROBE forces the circuit to state 5b.
State 5b: The receiver is kept on by the STROBE pin. Raw data are output on the MOSI line.
For all states: At any time, a low level applied to CONFB forces the state machine to state 1.
17.2.3 Data Manager Enabled and Strobe Oscillator Enabled
Figure 32
configuration, the receiver is controlled internally by the strobe oscillator. However, external control via
the STROBE pin is still possible, and overrides the strobe oscillator command.
State 10: The receiver is off, but the strobe oscillator and the off counter are running. Forcing STROBE
pin to the low level maintains the system in this state.
State 11: The receiver is waiting for a valid ID. If an ID, or its complement, is detected, the state machine
advances to state 12; otherwise, the circuit goes back to state 10 at the end of the RON time, if STROBE≠1.
State 12: An ID or its complement has been detected. The data manager is now waiting for a header or its
complement. If neither a header, nor its complement, has been received before a time-out of 256 bits at
data rate, the system returns to state 10.
State 13: A header, or its complement, has been received. Data and clock signals are output on the SPI port
until EOM indicates the end of the data sequence. If the complement of the header has been received,
output data are complemented also.
36
shows the state diagram when the data manager and the strobe oscillator are enabled. in this
STROBE = 1
Figure 31. Receive Mode, DME = 0, SOE = 0
MC33596 Data Sheet, Rev. 3
Raw Data on MOSI
Standby/LVD
State 5b
State 5
On
STROBE = 0
STROBE = 1
Figure 31
shows the state diagram.
STROBE = 0
Section 17.3, “Standby/LVD
SPI Deselected
Freescale Semiconductor