U3550BM Datasheet, PDF (18/25 Pages) TEMIC Semiconductors – Low-Power FM Transmitter / Synthesizer System 26 to 50 MHz

U3550BM
USA CT0 Handset
Country setting channel 1 – 10 (USA1):
Name
Value
Setting
RA1[1:0]
10
mid
RA2[1:0]
00
max
D1B[1:0]
01
8
D2B0
1
8
D3B[1:0]
00
1
KV2[3:1]
100
GMOD[1:0]
00
low
IMIXI
0
supra
UDM1
1
supra
FRMT
1
high
Country setting new channels (channel 11 – 25 USA2):
Name
Value
Setting
RA1[1:0]
01
mid
RA2[1:0]
00
max
D1B[1:0]
10
6
D2B0
0
6
D3B[1:0]
00
1
KV2[3:1]
110
GMOD[1:0]
01
mid
IMIXI
0
supra
UDM1
1
supra
FRMT
0
low
Channel frequencies and 1st LO divider, f_Ref3 = 5 kHz
Channel Number
RX Channel Frequency (MHz)
1
46.610
2
46.630
3
46.670
4
46.710
5
46.730
6
46.770
7
46.830
8
46.870
9
46.930
10
46.970
1st LO Frequency (MHz)
57.31
57.33
57.37
57.41
57.43
57.47
57.53
57.57
57.63
57.67
N
11462
11466
11474
11482
11486
11494
11506
11514
11526
11534
New channels
Channel Number
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
RX Channel Frequency (MHz)
43.720
43.740
43.820
43.840
43.920
43.960
44.120
44.160
44.180
44.200
44.320
44.360
44.400
44.460
44.480
1st LO Frequency (MHz)
54.42
54.44
54.52
54.54
54.62
54.66
54.82
54.86
54.88
54.90
55.02
55.06
55.10
55.16
55.18
N
10884
10888
10904
10908
10924
10932
10964
10972
10976
10980
11004
11012
11020
11032
11036
18 (25)
Preliminary Information
Rev. A2, 10-Sep-98