Micrel
MICRF405
 
 
 
 
April 2006 
34
M9999-041906
 (408) 955-1690
 
Bit Description
Adr
Data
A6..A0
D7
D6
D5
D4
D3
D2
D1
D0
0000000
Mode1=0
Mode0=1
PA2=1
PA1=1
PA0=1
ClkOut_en=1
Sync_en=1
Load_en=1
0000001
-
-
A0_5=0
A0_4=0
A0_3=1
A0_2=1
A0_1=1
A0_0=0
0000010
-
-
-
-
N0_11=0
N0_10=0
N0_9=0
N0_8=0
0000011
N0_7=0
N0_6=1
N0_5=1
N0_4=1
N0_3=0
N0_2=0
N0_1=1
N0_0=1
0000100
-
-
-
-
M0_11=0
M0_10=0
M0_9=0
M0_8=0
0000101
M0_7=0
M0_6=0
M0_5=1
M0_4=0
M0_3=0
M0_2=0
M0_1=0
M0_0=1
0000110
-
-
A1_5=0
A1_4=1
A1_3=1
A1_2=1
A1_1=1
A1_0=1
0000111
-
-
-
-
N1_11=0
N1_10=0
N1_9=0
N1_8=0
0001000
N1_7=0
N1_6=1
N1_5=1
N1_4=0
N1_3=1
N1_2=1
N1_1=1
N1_0=1
0001001
-
-
-
-
M1_11=0
M1_10=0
M1_9=0
M1_8=0
0001010
M1_7=0
M1_6=0
M1_5=1
M1_4=0
M1_3=0
M1_2=0
M1_1=0
M1_0=0
0001011     LowBatt_en=1     Freq_Band1=0    Freq_Band0=1     VCO_freq2=0     VCO_freq1=1 
VCO_freq0=1     Modulation1=1    Modulation0=0
0001100
LowBatt_level=0
LDO_by=0
LDO_en1=1
LDO_en0=1    MOD_LDc_en=0   PA_FEc_en=0     PA_LDc_en=0
LD_en=1
0001101
Bit_IO_en=1     Manchester_en=0    Sel_CRC1=1
Sel_CRC0=1    SyncID_Len1=0   SyncID_Len0=1   Pream_Len1=1   Pream_Len0=0
0001110
Mod_I4=0
Mod_I3=1
Mod_I2=0
Mod_I1=0
Mod_I0=1
Mod_A2=0
Mod_A1=1
Mod_A0=1
0001111    VCO_Fr_Chk=0    VCO_Fr_Auto=0 
FSKn2=1
FSKn1=0
FSKn0=0
Mod_F2=1
Mod_F1=0
Mod_F0=0
0010000
0
Prescaler_Sel=0    FSKClk_K5=1     FSKClk_K4=1     FSKClk_K3=0     FSKClk_K2=1     FSKClk_K1=0     FSKClk_K0=0
0010001     ASK_PN_en=0 
ASK_EN=0
ASKshape2=1    ASKshape1=1    ASKshape0=1
ASK2=1
ASK1=1
ASK0=1
0010010
ASKn1=1
ASKn0=0
ASKClk_K5=1     ASKClk_K4=1     ASKClk_K3=0     ASKClk_K2=1     ASKClk_K1=0     ASKClk_K0=0
0010011     INT_LF_EN=1 
CP_CUR1=0
CP_CUR0=1     LF_RES1_4=0    LF_RES1_3=1    LF_RES1_2=0    LF_RES1_1=0    LF_RES1_0=1
0010100    LF_High_PM=1 
LF_CAP1=1
LF_CAP0=1     LF_RES3_4=0    LF_RES3_3=0    LF_RES3_2=1    LF_RES3_1=0    LF_RES3_0=1
0010101
ClkOut_1=0
ClkOut_0=0
XCO_Fast=1
XCOtune4=1
XCOtune3=0
XCOtune2=0
XCOtune1=0
XCOtune0=0
0010110    INT_LF_TEST=0 
VCO_IB2=0
VCO_IB1=0
VCO_IB0=0
VCO_by=0
OUTS2=0
OUTS1=0
OUTS0=0
0010111
PA_IB3=1
PA_IB2 =0
PA_IB1=0
PA_IB0=1
PAB_IB3=1
PAB_IB2=0
PAB_IB1=0
PAB_IB0=1
0011000     VCO_freq_O2 
VCO_freq_O1     VCO_freq_O0
 
 
VC_HI
VC_LO
LOW_BATT
0011001     SyncID3_7=1 
SyncID3_6=1
SyncID3_5=1     SyncID3_4=0     SyncID3_3=0
SyncID3_2=1
SyncID3_1=0     SyncID3_0=1
0011010     SyncID2_7=1 
SyncID2_6=1
SyncID2_5=1     SyncID2_4=0     SyncID2_3=0
SyncID2_2=1
SyncID2_1=0     SyncID2_0=1
0011011     SyncID1_7=1 
SyncID1_6=1
SyncID1_5=1     SyncID1_4=0     SyncID1_3=0
SyncID1_2=1
SyncID1_1=0     SyncID1_0=1
0011100     SyncID0_7=1 
SyncID0_6=1
SyncID0_5=1     SyncID0_4=0     SyncID0_3=0
SyncID0_2=1
SyncID0_1=0     SyncID0_0=1
0011101
DATA_7
DATA_6
DATA_5
DATA_4
DATA_3
DATA_2
DATA_1
DATA_0
The 5 last bytes (0011001-0011101) are valid instantly, in other words, no load pulse (raising SEN) is needed to
activate the changes.
 
Mode1
Mode0
State
Comments
0
0
Power down
Keeps Register configuration
0
1
1
0
Standby
Crystal Oscillator running
1
1
Transmit mode
Transmit mode
Table 20. Main Mode.
 
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