參數(shù)資料
型號(hào)： TB2132FNG
元件分類： 接收器
英文描述： AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO30
封裝： 0.300 INCH, 0.65 MM PITCH, LEAD FREE, PLASTIC, SSOP-30
文件頁(yè)數(shù)： 2/23頁(yè)
文件大小： 302K
代理商： TB2132FNG
TB2132FNG
2006-04-11
10
Configuration of Local Oscillator and Programmable Counter
Operate the FM/TV local oscillator at approximately 200 MHz and select the counter input using the following
settings of the bits. Then determine reference frequency and minimum step frequency.
Mode
BAND0
BAND1
Divide
by 16
PW
Interna
VCO IN
Input Frequency
Range
Recommended
Reference
Frequency
Minimum Step
Frequency
AM
1
0
*
0
1 k, 3 k, 5 k
FM 1/32
0
3.125 k
50 kHz
TV 1/8
0
1
0
AM OSC IN
0.1 MHz~40 MHz
6.25 k
50 kHz
FM
0
1
25 kHz
TV 1/2
0
1
FM OSC IN
30 MHz~230 MHz
12.5 kHz
25 kHz
How to Set the Divisor
A divisor of the programmable counter is set in binary using the bits P0 to P16.
1. FM OSC IN: Pulse swallow mode (set the PW bit)
Pulse swallow mode (17 bits: FM and TV 1/2 Modes). Please set as shown below.
MSB
LSB
P16
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
2
17
2
0
Divisor range n: 528~131072 (210H to 1FFFH)
2. AM OSC IN (clear the PW bit)
Direct divide mode (12 bits: AM, FM 1/32, TV 1/8) please set P4 to P16 as shown below.
MSB
LSB
P16
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
2
12
2
0
[Irrelevant]
Divisor range n: 16~8191 (10H to 1FFFH)
FM/TV OSC
1/2
FM/TV 1/2
TV 1/8
FM 1/32
Buff
1/4
1/16
AM
AM OSC IN
FM 1/32
TV 1/8
AM
FM OSC IN
TV 1/2
FM
Programmable
counter
To MIX
Counter input
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