CMOSTEK CMT2300A - Settle Time; Frequency Synthesizer Specifications

AN146
Rev 0.9 | Page 8/25
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Table 6. Automatically Wake from SLEEP, Automatically Enter RX
Control Bit
Value
SLEEP_TIMER_EN
1
RX_DC_EN
1
RX_TIMER_EN
0
RX_EXIT_STATE
0
SLEEP_TIMER_EN = 1, RX_DC_EN = 1
SLEEP STBY RFS RX
Figure 4. Receiver Automatically Wakes from SLEEP and Automatically Enters RX
1.2.4 Automatically Wake from SLEEP, Automatically Exit from RX
In this mode, based on the automatically waking from SLEEP, add the automatically exiting from RX.
Entering RFS or RX from STBY need the MCU to switch manually (That is not automatically enter the
receiving). But once RX is entered, the RX TIMER will start counting, and when the timeout exits, it will
automatically switch to the corresponding status according to the RX_EXIT_STATE configuration. In general,
the STBY state can be used as a "relay station", the MCU can participate in operations such as clearing the
interrupt and reading the FIFO.
Table 7. Automatically Wake from SLEEP, Automatically Exit from RX
Control Bit
Value
SLEEP_TIMER_EN
1
RX_DC_EN
0
RX_TIMER_EN
1
RX_EXIT_STATE
0/1/2
SLEEP STBY RFS RX
RX_TIMER_EN = 1, RX_EXIT_STATE = 0
RX_TIMER_EN = 1, RX_EXIT_STATE = 1
RX_TIMER_EN = 1,
RX_EXIT_STATE = 2
SLEEP_TIMER_EN = 1
Figure 5. Receiver Automatically Wakes from SLEEP, Automatically Exits from RX