- 您現在的位置：買賣IC網 > PDF目錄363893 > W62410 (WINBOND ELECTRONICS CORP) A Digital Speech Signal Processor(數字語音信號處理器) PDF資料下載
參數資料
| 型號： | W62410 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 數字信號處理 |
| 英文描述： | A Digital Speech Signal Processor(數字語音信號處理器) |
| 中文描述： | 8-BIT, 24.576 MHz, OTHER DSP, PQFP100 |
| 封裝： | 14 X 20 MM, 2.75 MM HEIGHT, PLASTIC, QFP-100 |
| 文件頁數： | 8/147頁 |
| 文件大?。?/td> | 1932K |
| 代理商： | W62410 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁
NO.:
W62410 API
VERSION:
A
PAGE
8
OPERATIONAL DESCRIPTION
Warning:
When Flash is used for the external storage,
no operation should be performed with the
new flash before it has been initialized by the
CHIPSET. Failing to do so may destroy
information about bad blocks present in the
flash chip and make the flash unusable.
Initial procedure:
Immediately after power up only commands that
do not require access to external memory is
available and may be used.
Before issuing a command that need access to
the external memory the external memory needs
to be initialized with the
Init
command. With
this command, one has to select the correct
memory type, flash or DRAM (and some other
system dependent parameters).
Once an
Init
command has been issued, one has
not to re-send this command again as long as the
chip is powered. However re-sending this
command will do no harm (the messages stay
preserved)
and
allows
parameters (like switching on or off the digital
AGC).
If really wished, one can set one parameter in the
Init
command to simulate a cold restart (as if the
CHIPSET would never have been powered up
before) which will erase all present messages
and reinitialize the external memory.
Initialization of external flash memory can take
some time. Typically 3 to 4 seconds for each
four Mbits. The time needed for DRAM is much
less.
The Master - Slave principle:
The W62410 always behaves as a slave to its
master, which is the host. This means that the
CHIPSET will never send any kind of status or
results back to the host if there was no explicit
request from the host.
The only exception to this rule is the behavior of
IO line 13, which is extensively used to indicate
the state of the current CallerID decoding. Since
CallerID decoding is very time sensitive this IO
line can be connected to a free interrupt line of
the host. The host can then have a very accurate
timing and meet the very strict timing
requirements for CallerID acknowledgements.
The above information is the exclusive intellectual property of Winbond Electronics and shall not be
disclosed, or reproduced without permission from Winbond.
changing
other
In this way it’s possible to avoid going through
the API which has a variable latency which is
not wanted for this time critical part of the
CallerID decoding.
Another advantage of the master – slave
principle is that racing conditions can not exist.
The host simply has to wait until the CHIPSET
answers back with a status or result before it can
issue the next command.
Command groups:
To control the W62410 the API provides an
extensive set of instructions. They have been
grouped together into seven groups:
Group 0:
Setup and various commands.
Group 1:
Recording and playback.
Group 2:
Recording and playback from host.
Group 3:
Tone generation.
Group 4:
Handling of PIO.
Group 5:
MCU memory functions.
Group 6:
CallerID functions.
Overview of the command groups:
Group 0:
0.1)
Idle:
Generally used to stop a command but also
used to put the chip in sleep mode (power saving)
and/or performing garbage collection of deleted
messages.
0.2)
Init:
Specifies among other things the type of
external memory (Flash or DRAM). Also
indicates if the compression algorithm has to
perform silence compression and digital AGC.
It also specifies some system clock dependent
parameters. It also allows simulating a cold
restart.
0.3)
SetThresholdLevels:
S
pecifies a set of
threshold levels for e.g. voice activity,
continuous tone duration and DTMF sensitivity
to adapt the CHIPSET to different telephone
line conditions.
0.4)
SetMaxLengthRecording:
With this command,
the CHIPSET will automatically stop the
recording after the specified time. This happens
in incremental steps of one minute. Between
one and 15 minutes are allowed but unlimited
recording time is possible also. In addition, it
allows specifying that a flag has to be set high in
the status register when the recording reaches
the end of the allowed recording time for an
ICM message. This warning time can be set
between 2 and 30 seconds in steps of 2 seconds
each. No warning time can be specified also.
0.5)
SetLoopBack:
I
s in fact nothing more than
sending to the output of the CODEC what
相關PDF資料 |
PDF描述 |
|---|---|
| W65C02S | Microprocessor |
| W65C02S6P-14 | Microprocessor |
| W65C02S6PL-14 | Microprocessor |
| W65C02S6Q-14 | Microprocessor |
| W65C02S8P-14 | Microprocessor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W624LS | 制造商:LUMINIS 制造商全稱:LUMINIS 功能描述:Post top mount |
| W6250ASX-1 | 功能描述:固態繼電器-工業安裝 90-280VAC/240AC RoHS:否 制造商:Crydom 控制電壓范圍:4 VDC to 32 VDC 負載電壓額定值:7 VDC to 72 VDC 負載電流額定值:160 A 觸點形式: 輸出設備:SSR 安裝風格:Panel |
| W6250DSX-1 | 功能描述:固態繼電器-工業安裝 3-32 VDC/240AC RoHS:否 制造商:Crydom 控制電壓范圍:4 VDC to 32 VDC 負載電壓額定值:7 VDC to 72 VDC 負載電流額定值:160 A 觸點形式: 輸出設備:SSR 安裝風格:Panel |
| W626 | 制造商:LUMINIS 制造商全稱:LUMINIS 功能描述:Post top mount |
| W626LS | 制造商:LUMINIS 制造商全稱:LUMINIS 功能描述:Post top mount |
發布緊急采購，3分鐘左右您將得到回復。