si4330 Silicon Laboratories, si4330 Datasheet - Page 42

• Manufacturer Part Number: si4330
• Description: Si4330 Ism Receiver
• Manufacturer: Silicon Laboratories

Si4330
7.2. Modem Settings for OOK
The Si4330 is configured for OOK mode by setting the modtyp[1:0] field to OOK in "Register 71h. Modulation Mode
Control 2". In OOK mode, the following parameters can be configured: data rate, manchester coding, channel filter
bandwidth, and the clock recovery oversampling rate.
Manchester coding is enabled by setting enmanch in Register 70h.
The receive channel select filter bandwidth is configured via "Register 1Ch. IF Filter Bandwidth". The register
settings for the available channel bandwidth bandwidths are shown in Table 17.
The proper settings for ndec[2:0] are listed in Table 18 where Rb is the data rate (Rb) which is doubled when
Manchester coding is enabled.
42
Table 17. Channel Filter Bandwidth Settings
BW[kHz]
127.9
137.9
191.5
225.1
248.8
269.3
284.9
335.5
361.8
420.2
468.4
518.8
620.7
112.1
75.2
83.2
95.3
577
90
Preliminary Rev 0.2
dwn3_bypass filset[3:0]
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
10
12
13
14
11
5
F
1
2
3
4
6
7
1
2
3
4
8
9