音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

FX805LS Datasheet

  • FX805LS

  • Sub-Audio Signalling Processor

  • 17頁

  • CMLMICRO

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

FX805 Sub-Audio
Signalling Processor
Rx SUB-AUDIO
OUT
Rx LOWPASS
Rx SUB-AUDIO
IN
COMPARATOR
IN
OUT
+
鈥?/div>
180Hz/260Hz
COMPARATOR
AMP
Raw NRZ 鈥淒ata鈥?/div>
DIGITAL
NOISE
FILTER
FREQUENCY
ASSESMENT
NOTONE
TIMER
NOTONE
OUT
NRZ Rx
DATA and
BAUD RATE
EXTRACTOR
NRZ
Rx Data
Rx
V
BIAS
Tx
DATA BUFFER
XTAL/CLOCK
CLOCK
GENERATOR
XTAL
NRZ Tx BAUD
RATE
CTCSS
Tx TONE
NRZ Rx
CLOCK RATE
Audio Signal Path
AUDIO IN
Audio By-Pass
CTCSS 鈥淪ub-Audio鈥?Frequency
SUB-AUDIO BANDSTOP
Tx LEVEL
ADJUST
and
SHIFT REGISTER
NRZ Tx Data
Variable
Bandwidth
NRZ
Rx Baud Rate
FREQUENCY
MEASUREMENT
(COUNTER)
C-BUS
INTERFACE
AND
CONTROL
LOGIC
COMMAND DATA
REPLY DATA
CHIP SELECT
INTERRUPT
SERIAL CLOCK
WAKE
ADDRESS SELECT
+
IN
鈥?/div>
Rx AMP
V
DD
Tx
SUB-AUDIO
OUT
V
SS
Tx SUB-AUDIO LOWPASS
AUDIO OUT
Fig.1 FX805 Sub-Audio Signalling Processor
FX805 Sub-Audio Signalling Processor
A
碌Processor
controlled, sub-audio frequency signalling
processor to provide an outband audio and digital signalling
facility for PMR radio systems.
This device caters for the transmission and non-predictive
reception of:
q
Continuous Tone Controlled Squelch (CTCSS) tones
and other non-standard sub-audio frequencies.
q
Non-Return-to-Zero (NRZ) data to facilitate Continuous
Digitally Coded Squelch (CDCS/DPL
鈩?/div>
) system
operations.
To achieve these functions, the FX805 has on-chip:
q
A non-predictive CTCSS Tone Decoder and CDCS sub-
audio signal demodulator.
q
A CTCSS/NRZ Encoder with Tx level adjustment and
lowpass filter output stage with optional NRZ
pre-emphasis.
q
A selectable sub-audio bandstop filter.
q
A Notone (CTCSS Rx) period timer.
Setting of the FX805 functions and modes is by data
loaded from the
碌Controller
to the controlling registers within
the device. Reply Data and Interrupt protocol keep the
碌Controller
up to date on the operational status of the
circuitry 鈥撯€?all via the 鈥淐-BUS鈥?interface.
CTCSS
tone data for transmission is generated within the
碌Controller,
loaded to CTCSS Tx Frequency Register,
encoded and output as a tone via the Tx Sub-Audio Lowpass
Filter.
鈩?/div>
Received non-predicted CTCSS tone frequencies are
measured and the resulting data, in the form of a 2-byte
data-word, is presented via the CTCSS Rx Frequency
Register to the
碌Controller
for matching against a 鈥榣ook-up鈥?/div>
table. Noise filtering is provided to improve the signal quality
prior to measurement.
NRZ
coded data streams for transmission, when
generated within a
碌Controller,
are loaded to the NRZ Tx
Data Buffer and output, in 8-bit bytes, through the Lowpass
Filter circuitry as sub-audio signals. CDCS turn-off tones can
be added to the data signals by switching the FX805 to the
CTCSS transmit mode at the appropriate time.
NRZ coding is produced by the
碌Controller
and translated
into sub-audio signals by the FX805.
Received NRZ data is filtered, detected and placed into
the NRZ Rx Data Register which is then available for transfer
one byte at a time, to the
碌Controller,
for decoding by
software. Clock extraction circuitry is provided on chip and
Rx and Tx baud rates are selectable.
Provision is made in both hardware and system software
allocations to address two FX805 Sub-Audio Signalling
Processors consecutively to achieve multi-mode, duplex
operation.
The FX805 has a powersaving function which may be
controlled by software or a dedicated (Wake) input.
The FX805 is a low-power, 5-volt CMOS integrated circuit
and is available in 24-pin DIL cerdip and 24-pin/lead plastic
SMD packages.
DPL is a registered trademark of Motorola Inc.
Publication D/805/3 July 1994

FX805LS相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    DC-DC Converter
    SANYO
  • 英文版
    DC-DC Converter
    SANYO [San...
  • 英文版
    FX803 Audio Signalling Processor
    CMLMICRO
  • 英文版
    DC-DC Converter
    SANYO
  • 英文版
    DC-DC Converter
    SANYO [San...
  • 英文版
    FX803 Audio Signalling Processor
    CMLMICRO [...
  • 英文版
    Sub-Audio Signalling Processor
    CMLMICRO
  • 英文版
    Sub-Audio Signalling Processor
    CMLMICRO [...
  • 英文版
    AUDIO PROCESSOR
    CMLMICRO
  • 英文版
    AUDIO PROCESSOR
    CMLMICRO [...
  • 英文版
    FFSK Modem
    CMLMICRO
  • 英文版
    FFSK Modem
    CMLMICRO [...
  • 英文版
    Telecommunication IC
    ETC
  • 英文版
    FX803 Audio Signalling Processor
    CMLMICRO
  • 英文版
    FX803 Audio Signalling Processor
    CMLMICRO [...
  • 英文版
    Sub-Audio Signalling Processor
    CMLMICRO
  • 英文版
    Sub-Audio Signalling Processor
    CMLMICRO [...
  • 英文版
    AUDIO PROCESSOR
    CMLMICRO
  • 英文版
    AUDIO PROCESSOR
    CMLMICRO [...
  • 英文版
    FFSK Modem
    CMLMICRO

您可能感興趣的PDF文件資料

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！