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PDF ST75C540 Data sheet ( Hoja de datos )
| Número de pieza | ST75C540 | |
| Descripción | SUPER INTEGRATED DEVICES | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ST75C540 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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ST75C530
ST75C540
SUPER INTEGRATED DEVICES WITH DSP, AFE & MEMORIES
FOR TELEPHONY, MODEM, FAX OVER INTERNET & POTS LINES
SUMMARIZED FEATURES
(for detailed features, see page 4)
.www.DataSheet4U.comSINGLE CHIP FAX Up to 14.4Kbps (V.17)
. FULL DUPLEX DATA MODEM UP
14.4Kbps (V.32Bis)
. DIGITAL ANSWERING MACHINE :
TO
- 4.8Kbps VOCODER
- VARIABLEPLAYBACK SPEED (+50% to -50%)
- ADPCM 32, 34, 16Kbps VOCODER
. FULL-DUPLEX DIGITAL SPEAKERPHONE
WITH ECHO CANCELLATION
. PROGRAMMABLE RING DETECTION
. 16 PROGRAMMABLE TONE DETECTORS
FOR CLID AND SCWID
. DTMF DETECTION
. VERSATILE HOST INTERFACES
. 16 GENERAL PURPOSE I/O PORTS
. 2 RELAY DRIVE OUTPUTS
. SINGLE 5V POWER SUPPLY
. TYPICAL ACTIVE POWER CONSUMPTION :
650mW (ST75C530), 750 mW (ST75C540)
. LOW POWER MODE < 30mW
. 80-PIN TQFP PACKAGE (14mm x 14mm)
DESCRIPTION
ST75C530 and ST75C540 are two super-inte-
grated devices including DSP, Modem and Audio
Analog Front Ends and memories for Telephony,
Modem and FAX applications.
These devices can be used for classical applica-
tions over POTS lines or over Internet.
The super integration technology allows a signifi-
cant cost reduction on bill of materials for equip-
ment like High-End phones, INTERNET phones,
phone-Fax, INTERNET FAX, ...
The devices are used with a host processor
through a Dual Port RAM allowing the use of any
kind of microcontroller (RISC, CISC, General Pur-
pose 8-bit µC, ...).
TQFP80 (14 x 14 x 1.4mm)
(Full Thin Plastic Quad Flat Pack)
ORDER CODE : ST75C530FP-A
ST75C540FP-A
The embedded software includes :
- handset with listening group capability,
- full duplex handsfree,
- voice coder/decoderat 4.8Kbpsfor staticanswer-
ing machine applications and ADPCM 16Kbps,
24Kbps and 32Kbps for high quality message
recording,
- Tone and DTMF generators,
- Tone and DTMF detectors,
- FAX up to 14.4Kbps,
- Data-Modem up to 14.4Kbps (ST75C540 only).
The DSP sofware is extensively user configurable
allowing specific functions to be supported like
Caller Identifier (CLID) and Second Call Waiting
Identifier (SCWID).
The DSP software includes a transparent mode
allowing the host controller to access directly the
modem Analog Front End and the Audio AFE
through the dual Port RAM. This is very useful for
hostprocessing modem solutions (or soft modem)
where the modulation and the demodulation (V.34,
V.90) are done by the application main processor.
In transparent mode, the embedded DSP can be
used simultaneously with the same samples.
The transparentmode for audio AFE is provided to
play audio files or to record voice and/or audio.
February 1999
1/84
1 page  
II - PIN DESCRIPTION
II.1 - Pin Connections
ST75C530 - ST75C540
www.DataSheet4U.comSPK1N
SPK1P
AGNDTA
VREFN
VREFP
VCM
AGNDRA
MIC1
MIC2
MIC3
RxA
AVDDM
AGNDM
TxA2
TxA1
EYEX
EYEY
DGND6
DVDD6
DGND1
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
1 60
2 59
3 58
4 57
5 56
6 55
7 54
8 53
9 52
10 51
11 50
12 49
13 48
14 47
15 46
16 45
17 44
18 43
19 42
20 41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
GIO10
DVDD4
DGND4
GIO07
GIO06
GIO05
GIO04
GIO03
GIO02
DVDD3
DGND3
GIO01
GIO00
RING
RELAY1
RELAY0
RGND
INT/MOT
SINTR
SCS
5/84
5 Page 
ST75C530 - ST75C540
IV - ELECTRICAL SPECIFICATIONS (continued)
IV.4 - Modem Analog Interface
AVDD = DVDD = 5V, Tamb = 25oC
Measurement bandwidth is flat from 100Hz to 4800Hz ;Load impedance 10kΩ, 20pF
For differential output (TxA1/TxA2) : 0dBr = 1.77VRMS 1kHz sinwave (equivalent to 5VPP).
For single input (RxA) : 0dBr = 886mVRMS 1kHz sinwave (equivalent to 2.5VPP).
Symbol
Rxrin
Rxmac
www.DataSheet4U.comRxdc
Rxsndr
Rxin
Rxov
TxAdrl
TxAcl
TxArout
Pin Name
RxA
TxA1/TxA2
Parameter
Input Impedance
Maximum AC Input Voltage = 0dBr
DC Reference Voltage
Signal to (Noise + Distortion), at -6dBr
Idle Noise
DC Offset Voltage (Input = VCM)
Minimum Differential Load
Maximum Differential Load
Output Impedance
Min.
100
Typ.
2.5
75
-50
10
TxAmac
TxAdc
TxAov
Maximum AC Differential Output = 0dBr
DC Reference Voltage
DC Offset Voltage
-200
2.5
TxAsndr
TxAin
Signal to (Noise + Distortion), at -6dBr
Idle Noise
79
Max.
2.5
-81
100
20
100
5
200
-85
Unit
kΩ
VPP
V
dB
dBr
mV
kΩ
pF
Ω
VPP
V
mV
dB
dBr
IV.5 - Audio Analog Interface
AVDD = DVDD = 5V, Tamb = 25oC
Measurement bandwidth is flat from 100Hz to 4800Hz ;Load impedance 10kΩ, 20pF
For differential output (SPK1N/SPK1P, SPK2N/SPK2P, SPK3N/SPK3P) : 0dBr = 1.77VRMS 1kHz sinwave
(equivalent to 5VPP).
For single input (MIC1, MIC2, MIC3) : 0dBr = 886mVRMS 1kHz sinwave (equivalent to 2.5VPP).
Symbol
Pin Name
Parameter
Min. Typ. Max. Unit
RArin
RAmac
RAdc
MIC1,
MIC2,
MIC3
Input Impedance
Maximum AC Input Voltage = 0dBr
DC Reference Voltage
100 kΩ
2.5 VPP
2.5 V
RAdis
Distortion at -6dBr
2%
RAin
Idle Noise
-81 dBr
RAov
TAdrl
TArout
TAmac
TAdc
SPK1N/SPK1P,
SPK2N/SPK2P,
SPK3N/SPK3P
DC Offset Voltage (Input = VCM)
Minimum Differential Load
Output Impedance
Maximum AC Differential Output = 0dBr
DC Reference Voltage
-50 50 mV
10 kΩ
100 Ω
5 VPP
2.5 V
TAov
DC Offset Voltage
-200
200 mV
TAdis
Distortion at -6dBr
1%
TAin
Idle Noise
-81 dBr
11/84
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ST75C540.PDF ] | |
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