參數(shù)資料
型號(hào)： LC72710LW
廠商： Sanyo Electric Co.,Ltd.
英文描述： Mobile FM Multiplex Broadcast (DARC) Receiver IC with On-Chip VICS Decoder(移動(dòng)FM多路廣播接收器芯片帶片上VICS譯碼器)
中文描述： 移動(dòng)調(diào)頻多路廣播（DARC）接收器集成電路片VICS解碼器（移動(dòng)調(diào)頻多路廣播接收器芯片帶片上VICS譯碼器）
文件頁(yè)數(shù)： 32/33頁(yè)
文件大?。?/td> 168K
代理商： LC72710LW
Figure 7 shows the flow of the dGPS data reception sequence focusing on the block synchronization state. Block
synchronization is immediately set to the unsynchronized state by BLK_RST, and the IC then reacquires block
synchronization with the dGPS station. Of course, if the dGPS station reception conditions are unfavorable, time will
pass without acquiring block synchronization. In the example shown in this figure, the period during which VICS station
data cannot be acquired with horizontal correction processing is a 6-packet period. Since the ability of vertical correction
to correct burst errors is about 10 packets, this example has a margin of about 4 packets. This margin can be applied to
the period for establishing block synchronization with the dGPS station. That is, the best timing for tuning from the VICS
station to the dGPS station is about 4 packet positions before the position of the packet that has dGPS data.
Notes
(1) If this two-station simultaneous data acquisition using tuning control is performed when the phase relationship
between the VICS station and the dGPS station block periods is 180°, the following phenomenon will occur: frame
synchronization will be lost and frame synchronization will be reestablished after the time corresponding to the back
protection count has passed. To prevent this phenomenon from occurring, the application must detect the block phase
between the two stations and, if the phase is 180°, cancel the simultaneous reception processing using tuning control.
(2) This technique for acquiring both VICS data and dGPS data using tuning control of a single tuner is, from the
standpoint of perfect acquisition of the VICS data, an imperfect technique. The VICS station data during the period
the dGPS station is tuned will be handled as invalid data, or bad packet data. While the inherent error correcting
capability of vertical direction error correction is 10 to 12 bits, if we subtract the number of bad VICS station packets
during dGPS station reception, we see that the degree of recovery provided by vertical correction for VICS data is
reduced.
(3) When the above control technique is used, the period during which it is permissible to acquired dGPS data is only
about 10 packets long. We recommend setting the synchronization system settings as follows to reliably acquire the
dGPS data during that period.
The reason the allowable number of BIC errors is made stricter is to reduce the chance for incorrect BIC
discrimination.
Default setting Recommended setting
2
1
1
1 (The default value can be used)
3 or higher (The default value can be used)
Number of allowed BIC errors (back)
Block synchronization error protection count (back)
Frame synchronization error protection count (forward) 7
(4) Applications must set bit 7 (SUB_BLK) in control register 2 to 1 during the dGPS data reception period. If this flag is
not set, vertical correction VICS data recovery will not be performed completely.
No. 6166-32/33
LC72710W, 72710LW
Tuning the VICS station
BLK RST
Tuning the dGPS station
BLK RST
Missing
data 5
Missing
data 6
Missing
data 3
Missing
data 4
Missing
data 1
Missing
data 2
VICS station
block period
Bad
data
Bad
data
OK dGPS
data
OK dGPS
data
OK
data
Bad
data
OK
VCKS data
Post-horizontal
correction output
INT signal
Protection
count: 2
Protection
count: 1
IC block
synchronization
dGPS station
block period
dGPS data
Figure 7 VICS - dGPS Simultaneous Reception
相關(guān)PDF資料
PDF描述
LC72711LW Mobile FM Multiplex Broadcast (DARC) Receiver IC(移動(dòng)FM多路廣播接收器芯片)
LC72714 Mobile FM Multiplex Broadcast IC with On-Chip VICS Decoder
LC72714W Mobile FM Multiplex Broadcast IC with On-Chip VICS Decoder
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LC72720YV Single-Chip RDS Signal-Processing System IC(單片無(wú)線電數(shù)據(jù)系統(tǒng)信號(hào)處理芯片)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LC72710W 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Mobile FM Multiplex Broadcast DARC Receiver IC with On-Chip VICS Decoder
LC72711LW 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Mobile FM Multiplex Broadcast DARC Receiver IC
LC72711LW-E 制造商:ON Semiconductor 功能描述:DARC DECODE-LSI - Trays
LC72711LWHS-E 功能描述:射頻接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel
LC72711W 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Mobile FM Multiplex Broadcast DARC Receiver IC
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