參數(shù)資料
型號(hào): U4255BM-AFN
英文描述: AM/FM Receiver Circuit
中文描述: 調(diào)幅/調(diào)頻接收機(jī)電路
文件頁(yè)數(shù): 10/14頁(yè)
文件大小: 139K
代理商: U4255BM-AFN
U4255BM
Rev. A2, 11-Oct-00
10 (14)
Setting Bit 9 activates test mode.
Mode
Bit 9
0
1
Normal operation
Testmode
Bit 8 = 0 activates the multipath noise canceller.
Multipath Noise Canceller
Active
Not active
Bit 8
0
1
Bit 7 = 1 mutes the MPX output.
Mute of MPX Output
MPX out, Pin 11
Mute MPX
Bit 7
0
1
Bits 6 and 5 set the center frequency of the adjacent
channel sensor.
Center Frequency Adjacent
Channel Sensor
450 kHz
300 kHz
700 kHz
Filter off
Bit 6
Bit 5
0
0
1
1
0
1
0
1
Bit 4 = 1 activates bit 10 to bit 17.
If Bit 4 = 0 then the default seting is used.
Activate Bit 10 to Bit 17
Disable Bits 10 to 17
Enable Bits 10 to 17
Bit 4
0
1
Bits 0 to 3 set the band width of the integrated band filter.
IF Band Width
200 kHz
190 kHz
180 kHz
170 kHz
160 kHz
150 kHz
140 kHz
130 kHz
120 kHz
110 kHz
100 kHz
90 kHz
80 kHz
70 kHz
60 kHz
50 kHz
Bit 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Bit 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Bit 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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