- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382553 > ST75C540FP-A (意法半導(dǎo)體) SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES PDF資料下載
參數(shù)資料
| 型號： | ST75C540FP-A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES |
| 中文描述： | 超級綜合DEVICESWITH數(shù)字信號處理器，模擬前端 |
| 文件頁數(shù)： | 18/84頁 |
| 文件大?。?/td> | 599K |
| 代理商： | ST75C540FP-A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第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頁當(dāng)前第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
V - FUNCTIONALDESCRIPTION
(continued)
Figure 7 :
SPK1Distortionversus RxA
10
2
10
3
VSPK1 (V
RMS
)
Distortion
Rx Softclippingand Distortion
0
2
4
6
8
10
12
(mV
RMS
)
10
3
D (%)
10
2
10
V
MIC2
(mV
RMS
)
7
POWER SPEC1
POWER SPEC2
64Avg
64Avg
0%Ovlp
0%Ovlp
Ftop
Ftop
0.0
0.0
dBm
RMS
V2
dB
RMS
Vv2
-80.0
-80.0
Fxd Y O
Hz
5k
Line Tx
Speaker Output
7
Note :
Acoustic echo from speaker to microphone input with no
local speech. Receiving speech on line input.
Figure8 :
Speakerand Line TxPowerSpectrums
V.3.13- LowPower Mode
Sleepstatecan beattainedby aSLEEPcommand.
Whenin sleepmode,thedualport RAMis unavail-
able and the clocks are disabled.
When entering the low power mode, the
ST75C530/540stopsits oscillator,all theperipher-
alsof theDSPcore are stoppedin orderto reduce
the power consumption. The dual port RAM is
made inaccessible.
The ST75C530/540 can be awakenedby a hard-
ware reset,a RINGsignalor adummywrite at any
location in the dual port RAM.
There is a maximum time of 20ms to restart the
oscillator after waking up and an additional 5ms
after the interrupt to be able to accept any com-
mand coming from the host.
V.3.14- Reset
After a hardware reset, or an INIT command, the
ST75C530/540 clears all its internal memories,
clearsthe wholedual port RAM andstartsto initial-
ize the delta sigma analog converters.As soon as
these initializations are completed, the
ST75C530/540 generates an interrupt IT6 (com-
mandacknoledge)andis programmedto sendand
receivetones,thesampleclockareprogrammedto
9600Hz.Thetotaldurationof the resetsequenceis
about 5ms. After that time the ST75C530/540 is
readyto executecommandssentbythehostmicro-
controller.Thedurationoftheresetsignalshouldbe
greaterthan700ns.
V.4 - Modem Interface
V.4.1 - AnalogInterface
Referto BlockDiagram on page 7.
V.4.2 - GeneralI/Oand Relay Interface
16 pins are dedicatedto the generalI/O port. Two
arededicatedto Relaydriver.Theequivalentsche-
matic is as follows: see Figure 9.
Q
D
GIO0[x]
IODIR0[x]
IODATA0[x]
(write)
IODATA0[x]
(read)
Q
D
RELAY[y]
IORELAY[y]
(write)
IORELAY[y]
(read)
RGND
N
7
Figure 9
ST75C530 - ST75C540
18/84
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST763 | 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS |
| ST763ACD | MOSFET; Transistor Polarity:N Channel |
| ST763ACDTR | 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS |
| ST763A | 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS |
| ST763AB | 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST75C540PQFP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| ST-75V | 制造商:Taiyo Electric Ind. 功能描述: |
| ST7-6 | 制造商:SUPERWORLD 制造商全稱:Superworld Electronics 功能描述:POWER TRANSFORMER |
| ST7624 | 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:65K Color Dot Matrix LCD Controller/Driver |
| ST7625 | 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:65K Color Dot Matrix LCD Controller/Driver |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。