RFM219SW Datasheet, PDF (31/35 Pages) List of Unclassifed Manufacturers – Wireless Alarm and Security Systems

RFM219SW
Register
RSSI
(0x45)
Table 23. RSSI
Bit RW
Bit Name
Descriptions
The value immediately reflects the real time Radio Signal Strength
Indicator (RSSI) when the chip is working in the RX state. The value is
low-pass filtered by the chip before it is read out. Thus any
7:0 r RSSI_VALUE<7:0>
high-frequency noise in the RSSI cannot be seen by the user. The RSSI
of any signal that is weaker than the “Squelch Threshold” will be
masked, i.e. the RSSI value is read as 0.
Table 24. FUNC_EN
Register Bit RW
Bit Name
Descriptions
7 r/w RESV
Always set it to 0.
During manufacturing stage, a few steps are required to perform to enter
the test mode. Stopping the running sleep timer is one of those steps
6 r/w SLTIMER_STOP (see Chapter Manufacturing Test for details).
0: Do not disturb the sleep timer (default).
1: Stop the sleep timer.
During manufacturing stage, a few steps are required to perform to enter
the test mode. Setting this bit to 1 is one of those steps (see Chapter
5 r/w PROD_TEST_EN Manufacturing Test for details).
FUNC_EN
(0x46)
0: Disable the manufacturing test mode (default).
1: Enable the manufacturing test mode.
4 r/w RESV
Always set it to 0.
3 r/w RESV
Always set it to 0.
2 r/w HS_SPI_EN
To minimize the power consumption the maximum SPI clock speed is
400 kHz. The user can used this bit to allow up to 1MHz SPI speed
supported.
0: Support maximum SPI clock speed of 400 kHz (default).
1: Support maximum SPI clock speed of 1 MHz.
1 r/w RESV
Always set it to 0.
0 r/w RESV
Always set it to 0.
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