Data Sheet

Page 89
RFM95/96/97/98(W)
Tel: + 86-755-82973805 Fax: + 86- 755-82973550 E-mail: [e-mail] http:/ / www.hoperf.com
WIRELESS & SENSING PRELIMINARY DATASHEET
Name
(Address)
Bits
Variable Name
Mode
Default
value
FSK/OOK Description
7-6 unused r 0x00 unused
5 OcpOn rw 0x01
Enables overload current protection (OCP) for the PA:
0 Æ OCP disabled
1 Æ OCP enabled
RegOcp
(0x0B)
4-0 OcpTrim rw 0x0b
Trimming of OCP current:
I
max
= 45+5*OcpTrim [mA] if OcpTrim <= 15 (120 mA) /
I
max
= -30+10*OcpTrim [mA] if 15 < OcpTrim <= 27 (130 to 240
mA)
I
max
= 240mA for higher settings
Default I
max
= 100mA
Registers for the Receiver
7-5 LnaGain rw 0x01
LNA gain setting:
000 Æ reserved
001 Æ G1 = highest gain
010 Æ G2 = highest gain – 6 dB
011 Æ G3 = highest gain – 12 dB
100 Æ G4 = highest gain – 24 dB
101 Æ G5 = highest gain – 36 dB
110 Æ G6 = highest gain – 48 dB
111 Æ reserved
Note:
Reading this address always returns the current LNA gain (which
may be different from what had been previously selected if AGC
is enabled.
4-3 LnaBoostLf rw 0x00
Low Frequency (RFI_LF) LNA current adjustment
00 Æ Default LNA current
Other Æ Reserved
2 reserved rw 0x00 reserved
RegLna
(0x0C)
1-0 LnaBoostHf rw 0x00
High Frequency (RFI_HF) LNA current adjustment
00 Æ Default LNA current
11 Æ Boost on, 150% LNA current