U3550BM Datasheet, PDF (17/25 Pages) TEMIC Semiconductors – Low-Power FM Transmitter / Synthesizer System 26 to 50 MHz

U3550BM
USA CT0 Base Set
Country setting channel 1 – 10 (USA1):
Name RA1[1:0] RA2[1:0] D1B[1:0]
Value
10
00
01
Setting mid
max
8
D2B0
1
8
D3B[1:0]
00
1
KV2[3:1]
100
GMOD[1:0]
00
low
IMIXI
1
infra
UDM1
0
infra
FRMT
1
high
Country setting new channels (channel 11 – 25, USA2):
Name RA1[1:0] RA2[1:0] D1B[1:0]
Value
01
01
10
Setting mid
high
6
D2B0
0
6
D3B[1:0]
00
1
KV2[3:1]
110
GMOD[1:0]
01
mid
IMIXI
1
infra
UDM1
0
infra
FRMT
0
low
Channel frequencies and 1st LO divider, f_Ref3 = 5 kHz
Channel Number
RX Channel Frequency (MHz)
1
49.670
2
49.845
3
49.860
4
49.770
5
49.875
6
49.830
7
49.890
8
49.930
9
49.990
10
49.970
1st LO Frequency (MHz)
38.970
39.145
39.160
39.070
39.175
39.130
39.190
39.230
39.290
39.270
N
7794
7829
7832
7814
7835
7826
7838
7846
7858
7854
New channels
Channel Number
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
RX Channel Frequency (MHz)
48.760
48.840
48.860
48.920
49.020
49.080
49.100
49.160
49.200
49.240
49.280
49.360
49.400
49.460
49.500
1st LO Frequency (MHz)
38.06
38.14
38.16
38.22
38.32
38.38
38.40
38.46
38.50
38.54
38.58
38.66
38.70
38.76
38.80
N
7612
7628
7632
7644
7664
7676
7680
7692
7700
7708
7716
7732
7740
7752
7760
Rev. A2, 10-Sep-98
Preliminary Information
17 (25)