參數(shù)資料
型號(hào)： UPD17006AGF-011
廠商： NEC Corp.
英文描述： LJT 46C 40#20 4#16 2#8(COAX)
中文描述： 4位單片機(jī)帶預(yù)分頻器的微控制器，鎖相環(huán)頻率合成器，如果汽車調(diào)頻，兆瓦，和LW收音機(jī)計(jì)數(shù)器
文件頁(yè)數(shù)： 44/72頁(yè)
文件大?。?/td> 677K
代理商： UPD17006AGF-011
44
μ
PD17006AGF-011
(2) AF operation
There are two operation procedures for AFs: AF operation 1 and AF operation 2.
AF operations 1 and 2 are performed as follows (the condition under which AF operation 1 is performed
is in FM band and when an RDS station is called):
G
AF operation 1
At CE reset
When band is changed
When preset memory is read
When tuner is selected by sound selector (except while tuner is performing seek operation)
G
AF operation 2
When electric field intensity of broadcasting currently received drops below a specific level during
RDS station reception
The AF operations are described below.
(a) AF operation 1
AF selection is performed by the following procedure if the FM band is selected, and the station
called was an RDS station, when CE reset is effected, when the band is changed, when the preset
memory is read, or when the tuner is selected by the sound selector (except while the tuner is
performing a seek operation).
1
The AF memories (of up to 8 stations) corresponding to the called RDS station are sorted in order
of frequency.
The SD pin is checked starting from the highest frequency. The signal meter level at which the
broadcasting station is detected is stored.
AF selection is performed starting from the highest signal meter level, based on the detection
result in 2 .
If an RDS station is detected as a result of AF selection, the PI code is checked.
At this time, the PI code is checked as follows:
When the region mode is selected because initial setting diode REGEN = 1 and by the
key, coincidence of a 12-bit PI code except the area cover code of the PI code is
detected; otherwise, coincidence of a 16-bit PI code is detected.
When detection of coincidence of this PI code is successful, the AF operation is completed, and
an RDS station is received.
If AF selection fails in 4 , the RDS mode is checked. A PI search operation is performed when
the RDS mode is selected (for the PI search operation, refer to (3) PI search operation).
When the RDS mode is not selected, the station received before AF selection is retained.
If a preset memory number is being displayed at this time, it is extinguished.
2
3
4
REGION
5
(b) AF operation 2
This operation is valid when the RDS mode is selected.
It denotes an AF operation that is performed when receiving an RDS station and the electric field
intensity of the station currently being received drops below a specific level.
The start condition for AF operation 2 is as follows:
相關(guān)PDF資料
PDF描述
UPD17006AGF-011-3B9 Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD17006AGF-011-3B9 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOBILE FM, MW, AND LW RADIOS
UPD17006-XXX-3B9 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
UPD17010 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE DEDICATED TO DIGITAL TUNING SYSTEM
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UPD17012 制造商:NEC 制造商全稱:NEC 功能描述:PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER AUTOMOBILE APPLICATION
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