MSM7580 PDF даташит
Спецификация MSM7580 изготовлена «OKI» и имеет функцию, называемую «ITU-T G.721 ADPCM TRANSCODER». |
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Детали детали
Номер произв | MSM7580 |
Описание | ITU-T G.721 ADPCM TRANSCODER |
Производители | OKI |
логотип |
18 Pages
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E2U0031-39-61
¡¡SemicondSucetormiconductor
MSM7580
ITU-T G.721 ADPCM TRANSCODER
This version: JMunS.M19795980
Previous version: Aug. 1998
GENERAL DESCRIPTION
The MSM7580 is an ADPCM transcoder which is used by the new digital cordless system. It
converts 64 kbps voice PCM serial data to 32 kbps ITU-T G.721 ADPCM serial data, and vice
versa.
This device consists of two systems with full-duplex voice data channels and a data-through
mode.
The MSM7580 provides cost effective solutions for digital cordless office telephone systems
which are incorporated into PABXs and for the public base stations which are connected to the
central office through digital PSTNs.
FEATURES
• Conforms to ITU-T G.721
• Built-in Full-duplex Transcoder with Two Data channels
• PCM companding Law: A-law/µ-law selectable
• Synchronized Operation between coder and decoder, and between two channels.
• Serial PCM Data Transmission Speed: 64 kbps to 2048 kbps
• Serial ADPCM Data Transmission Speed: 32 kbps to 2048 kbps
• Hardware Reset – ITU-T G.721 Optional Reset – for each channel
• Power Down Control for each channel
• Decoder (ADPCM Æ PCM ) MUTE Mode and PAD Mode for each channel
• ADPCM Data-through Mode
• Capable of time slot conversion
• Special ADPCM Input Data Code (”0000”) Detector for each channel
• Master Clock Signal : Not necessary
• Power supply voltage/Consumption current :
+5 V ±10%, 2.5 mA/channel
• Package :
28-pin plastic SOP (SOP28-P-430-1.27-K) (Product name : MSM7580GS-K)
1/17
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SIP1
SYNCP1
SOP1
LAW
THR1
THR2
SIP2
SYNCP2
SOP2
BCLKP
MUTE1
CODER
SP
DECODER
SP
MUTE /
PAD
CODER
DECODER
BCLKA
PDN1 PDN2
CODER
PS
DECODER
PS
POWER DOWN
SOA1
SYNCA1
SIA1
DET1
CODER
SP
DECODER
SP
MUTE /
PAD
MUTE2
CODER
DECODER
+5 V 0 V
PAD/ VDD GND
MUTE
CODER
PS
DECODER
PS
RES1
RES2
SOA2
SYNCA2
SIA2
DET2
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¡ Semiconductor
PIN CONFIGURATION (TOP VIEW)
SIP2 1
SOP2 2
THR2 3
MUTE2 4
SYNCP2 5
PAD/MUTE 6
BCLKP 7
GND 8
LAW 9
SYNCP1 10
MUTE1 11
THR1 12
SOP1 13
SIP1 14
28 SOA2
27 SIA2
26 SYNCA2
25 RES2
24 DET2
23 PDN2
22 VDD
21 BCLKA
20 PDN1
19 DET1
18 RES1
17 SYNCA1
16 SIA1
15 SOA1
28-Pin Plastic SOP
MSM7580
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Номер в каталоге | Описание | Производители |
MSM7580 | ITU-T G.721 ADPCM TRANSCODER | OKI |
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