首頁>T7121-EL2>規(guī)格書詳情

T7121-EL2中文資料agere數(shù)據(jù)手冊PDF規(guī)格書

T7121-EL2
廠商型號

T7121-EL2

功能描述

T7121 HDLC Interface for ISDN

文件大小

685.38 Kbytes

頁面數(shù)量

68

生產(chǎn)廠商 Agere Systems
企業(yè)簡稱

agere

中文名稱

Agere Systems官網(wǎng)

原廠標識
數(shù)據(jù)手冊

下載地址一下載地址二

更新時間

2025-1-23 23:00:00

T7121-EL2規(guī)格書詳情

Description

The T7121 HDLC Interface for ISDN (HIFI-64) connects serial communications links carrying HDLC bitsynchronous data frames to 8-bit microcomputer systems. There is an optional transparent mode of operation in which no HDLC processing is performed on user data. The device communicates with the system microprocessor as a memory-mapped peripheral and is controlled by reading and writing 19 internal registers. The chip can be instructed to interrupt the microprocessor when it detects certain events requiring microprocessor attention.

Features

■ Low-cost device for B-channel (64 kbits/s) or D-channel (16 kbits/s) data transport.

■ Optional transparent mode—no HDLC framing is performed.

■ Frame sync (FS) allows a slot-select feature to access an individual time slot in any TDM data stream (e.g., Lucent Technologies Microelectronics Group Concentration Highway Interface [CHI] or subset).

■ Bit-masking option allows effective data rates of 8, 16, 24, 32, 40, 48, and 56 kbits/s.

■ Maximum data rate up to 4.096 MHz.

■ Serial data-transfer pins for direct connection to the Lucent ISDN line transceiver T7250C.

■ Supports IOM2, K2, GCI, and SLD interface.

■ Parallel microprocessor interface with either multiplexed or demultiplexed address and data lines for easy interface with any microprocessor.

■ Single interrupt output signal with seven maskable interrupt conditions.

■ Programmable interrupt modes.

■ Memory-mapped read and write registers.

■ TTL/CMOS compatible input/output.

■ 3-state output pins to assist system diagnostics.

■ Low-power 1.25 μm CMOS:

— 30 mW typical operation at 12 MHz.

— 5 mW standby mode (typical).

■ HDLC transceiver:

— Stand-alone HDLC framing operation.

— 64-byte FIFO in both transmit and receive directions.

— Supports block-move instruction.

— Multiple frames allowed in FIFO.

— Programmable FIFO full- and empty-level interrupt.

供應商 型號 品牌 批號 封裝 庫存 備注 價格
AGERESYSTEMS
23+
NA/
4250
原裝現(xiàn)貨,當天可交貨,原型號開票
詢價
LUCENT
23+
QFP132
20000
全新原裝假一賠十
詢價
LUCENT
23+
QFP
4500
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售!
詢價
LUCENT
2016+
DIP
6523
只做原裝正品現(xiàn)貨!或訂貨!
詢價
AGERESYST
22+23+
SOJ28
54625
絕對原裝正品現(xiàn)貨,全新深圳原裝進口現(xiàn)貨
詢價
LUCENT
23+
QFP
2800
絕對全新原裝!現(xiàn)貨!特價!請放心訂購!
詢價
Lucent
18
公司優(yōu)勢庫存 熱賣中!!
詢價
AGERESYSTEMS
22+
SOJ28
5000
原裝現(xiàn)貨庫存.價格優(yōu)勢
詢價
ATT
94
全新原裝 貨期兩周
詢價
24+
3000
自己現(xiàn)貨
詢價