Silicon Laboratories Si446 Series, Руководство пользователя

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A N 6 2 5
98 Rev. 0.1
3.5.100. MODEM_RSSI_CONTROL
 Summary: RSSI control
 Purpose:

Selects where in the packet to latch the RSSI value in the RSSI Latch fast response register. The latched
value can also be read using GET_MODEM_STATUS command.
 Property: 0x204C
 Default: 0x01
 Fields:

AVERAGE - default:0
0 = RSSI updated every bit.
1 = RSSI averaged over 4 bits

LATCH[1:0] - default:0x1
0 = Latch disabled, will always read 0
1 = Latches at preamble detect
2 = Latches at sync detect
3 = Latches RSSI 4Tb (7Tb if averaging is enabled) after RX is enabled.
 Register View
3.5.101. MODEM_RSSI_CONTROL2
 Summary: RSSI control
 Purpose:

Enable RSSI jumping detection. Used to detect an RSSI jump as configured by MODEM_RSSI_CONTROL while
receiving a packet. Can be useful to detect interferring or secondary incoming packet.
 Property: 0x204D
 Default: 0x00
 Fields:

rssijmp_dwn - default:0 If set, enable RSSI jumping-down detection.

rssijmp_up - default:0 If set, enable RSSI jumping-up detection.

enrssijmp - default:0
Enable RSSI jumping detection.
Once RSSI difference between 2Tb or 4Tb is above the RSSI jumping threshold, and interrupt will be generated.

jmpdlylen - default:0
0 = RSSI jumping detection is running with 2Tb
1 = RSSI jumping detection is running with 4Tb

enjmprx - default:0 If set, RSSI jumping detection will force RX machine to reset.
 Register View
MODEM_RSSI_CONTROL
7 6 5 4 3 2 1 0
0x0 AVERAGE 0x0 LATCH[1:0]
0x0 0 0x0 0x1
MODEM_RSSI_CONTROL2
7 6 5 4 3 2 1 0
0X0 RSSIJMP_DWN RSSIJMP_UP ENRSSIJMP JMPDLYLEN ENJMPRX
0x0 0 0 0 0 0