MC33596_10 Datasheet, PDF (25/70 Pages) Freescale Semiconductor, Inc – PLL Tuned UHF Receiver for Data Transfer Applications

RSSIC
S1
5 x t_digclk
Closed
S2 Open
RSSI Register _Frozen
Updated
RSSIOUT
CONFB
Peak Detector
Test
MOSI
Frozen
Open
Closed
Updated
CMD
MISO
RSSI
Figure 17. RSSI Operation in Continuous Mode
Standby: LVD Mode
Frozen
CMD
RSSI
12 Standby: LVD Mode
The SPI is deselected. CONFB is set to high level and STROBE to low level in order to enter this mode.
Nothing is sent and all incoming data are ignored until CONFB and SEB go low to switch back to
configuration mode.
Standby/LVD mode allows minimum current consumption to be achieved. Depending upon the value of
the LVDE bit, the circuit is in standby mode (state 60) or LVD mode (state 5 and 20).
LVDE = 0: The receiver is in standby; consumption is reduced to leakage current (current state after POR).
LVDE = 1: The LVD function is enabled; consumption is in the range of tens of microamperes.
The only way to exit this mode is to go back to configuration mode by applying a low level to CONFB and
a high level to STROBE.
MC33596 Data Sheet, Rev. 4
Freescale Semiconductor
25