參數(shù)資料
型號： AM79C30AJC
廠商： ADVANCED MICRO DEVICES INC
元件分類： 數(shù)字傳輸電路
英文描述： Digital Subscriber Controller⑩ (DSC⑩) Circuit
中文描述： DATACOM, DIGITAL SLIC, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 2/101頁
文件大小： 1607K
代理商： AM79C30AJC
2
Am79C30A/32A Data Sheet
DISTINCTIVE CHARACTERISTICS (continued)
I
Audio processing capability (DSC circuit only)
— Registers for implementation of software-based
speaker phone algorithms
— Dual audio inputs
— Earpiece and loudspeaker drivers
— Codec/filter with A/
μ
selection
— Programmable gain and equalization filters
— Programmable sidetone level
— Programmable DTMF, single tone, progress
tone, and ringer tone generation
— Programmable on-chip microphone amplifier
I
Pin and software compatible with the
Am79C32A ISDN Data Controller (IDC) Circuit.
The Am79C32A is used in data-only
applications.
GENERAL DESCRIPTION
The Am79C30A Digital Subscriber Controller (DSC)
Circuit and Am79C32A ISDN Data Controller (IDC) Cir-
cuit, shown in the Block Diagram, allow the realization
of highly-integrated Terminal Equipment for the ISDN.
The Am79C30A/32A is fully compatible with the
CCITT-I-series recommendations for the S and T refer-
ence points, ensuring that the user of the device may
design TEs which conform to the international stan-
dards.
The Am79C30A/32A provides a 192-Kbit/s full duplex
digital path over four wires between the TE located on
the subscriber's premises and the NT or PABX line-
card. All physical layer functions and procedures are
implemented in accordance with CCITT Recommen-
dation I.430, including framing, synchronization, main-
tenance, and multiple terminal contention. Both
point-to-point and point-to-multipoint configurations are
supported.
The Am79C30A/32A processes the ISDN basic rate bit
stream, which consists of B1 (64 Kbit/s), B2 (64 Kbit/s),
and D (16 Kbit/s) channels. The B channels are routed
to and from different sections of the Am79C30A/32A
under software control. The D channel is partially pro-
cessed by the DSC/IDC circuit and is passed to the mi-
croprocessor for further processing.
The Main Audio Processor (MAP) uses Digital Signal
Processing (DSP) to implement a high performance
codec/filter function. The MAP interface supports a
loudspeaker, an earpiece, and two separate audio in-
puts. Programmable on-chip gain is provided to sim-
plify use of low output level microphones. The user may
alter frequency response and gain of the MAP receive
and transmit paths. Tone generators are included to im-
plement ringing, call progress, and DTMF signals.
A Peripheral Port (PP) is provided to allow the B chan-
nels to be routed off-chip for processing by other pe-
ripherals. This port is configurable as either an
industry-standard IOM-2 port, or as a serial bus port
(SBP).
The TE design process is simplified by the availability
of certified protocol software packages, which provide
complete system solutions through OSI Layer 3.
相關(guān)PDF資料
PDF描述
AM79C30AVC Digital Subscriber Controller⑩ (DSC⑩) Circuit
AM79C32A Digital Subscriber Controller⑩ (DSC⑩) Circuit
AM79C32AJC Digital Subscriber Controller⑩ (DSC⑩) Circuit
AM79C32AVC Digital Subscriber Controller⑩ (DSC⑩) Circuit
AM79C850KC SUPERNET-R 3
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79C30AJC/D 制造商:Rochester Electronics LLC 功能描述:- Bulk
AM79C30AJC/DTR 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
AM79C30AJC/E 制造商:Rochester Electronics LLC 功能描述:- Bulk
AM79C30AJC/E3 制造商:Rochester Electronics LLC 功能描述:- Bulk
AM79C30AJC/E4 制造商:Rochester Electronics LLC 功能描述:- Bulk
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*