73K321L

更新时间： 2024-11-10 23:13:35

品牌	Logo	应用领域
东电化 - TDK		调制解调器
页数	文件大小	规格书
24页	134K
描述
CCITT V.23, V.21 Single-Chip Modem

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中文翻译

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数据手册

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73K321L 数据手册

73K321L

CCITT V.23, V.21

Single-Chip Modem

April 2000

DESCRIPTION

FEATURES

The 73K321L is a highly integrated single-chip

modem IC which provides the functions needed to

construct a CCITT V.23 and V.21 compatible

modem, capable of 0-300 bit/s full-duplex or 0-1200

bit/s half-duplex operation over dial-up telephone

lines. The 73K321L provides 1200 bit/s operation in

V.23 mode and 300 bit/s in V.21 mode. The

73K321L also can both detect and generate the

2100 Hz answer tone needed for call initiation. The

73K321L integrates analog, digital, and switched-

capacitor array functions on a single substrate,

offering excellent performance and a high level of

functional integration in a single 28-pin DIP or PLCC

package. The 73K321L operates from a single +5V

supply with very low power consumption.

One-chip CCITT V.23 and V.21 standard

compatible modem data pump

Full-duplex operation at 0-300 bit/s (V.21) or

0-1200 bit/s (V.23) forward channel with or

without 0-75 bits/s back channel

Full Duplex 0-1200 bit/s (V.23) in 4-wire mode

Pin and software compatible with other TDK

Semiconductor Corporation K-Series 1-chip

modems

Interfaces directly with standard micro-

processors (8048, 80C51 typical)

Serial port for data transfer

Call progress, carrier, precise answer tone

(2100 Hz), calling tone (1300 Hz) and FSK

mark detectors

The

73K321L

includes

the

FSK

modulator/demodulator functions, call progress and

handshake tone monitor test modes, and a tone

generator capable of producing DTMF, answer,

calling tones. The 73K321L is designed to appear to

DTMF generator

Test modes available: ALB, DL, RDL, Mark,

Space, Alternating bit patterns

the systems designer as

microprocessor

Precise automatic gain control allows 45 dB

dynamic range

peripheral, and will easily interface with popular one-

chip microprocessors (80C51 typical) for control of

modem functions through its 8-bit multiplexed

address/data bus or via an optional serial control

bus. An ALE control line simplifies address

CMOS

technology

for

low

power

consumption using 60 mW @ 5V from a

single power supply

demultiplexing.

Data

communications

occurs

through a separate serial port only.

(continued)

BLOCK DIAGRAM

DATA

BUS

BUFFER

DTMF &

TONE

GENERATORS

8-BIT

BUS

AD0-AD7

FSK

MODULATOR/

DEMODULATOR

FOR

CONTROL

AND

TRANSMIT

FILTER

READ

WRITE

CONTROL

LOGIC

TXA

RXA

ALE

RECEIVE

FILTER

RESET

INT

STATUS

AND

SMART

DIALING

CONTROL

LOGIC

SERIAL

PORT

FOR

TESTS:

ALB,DLB

RDLB

PATTERNS

DETECT

FUNCTIONS

TXD

RXD

DATA

CLOCK

GENERATOR

POWER

12 3 4 5 6 7...24

中文翻译

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与73K321L相关器件

型号	品牌	获取价格	描述	数据表
73K321L-IH	TDK	获取价格	CCITT V.23, V.21 Single-Chip Modem
73K321L-IP	TDK	获取价格	CCITT V.23, V.21 Single-Chip Modem
73K321L-IP	TI	获取价格	1.2kbps DATA, MODEM, PDIP28, 0.600 INCH, PLASTIC, DIP-28
73K321SL-IP	TI	获取价格	1.2kbps DATA, MODEM, PDIP22, 0.400 INCH, PLASTIC, DIP-22
73K322L	TDK	获取价格	CCITT V.23, V.22, V.21 Single-Chip Modem
73K322L-IH	TDK	获取价格	CCITT V.23, V.22, V.21 Single-Chip Modem
73K322L-IH	SST	获取价格	Modem, 1.2kbps Data, PQCC28
73K322L-IP	TDK	获取价格	CCITT V.23, V.22, V.21 Single-Chip Modem
73K322L-IP	SST	获取价格	Modem, 1.2kbps Data, PDIP28
73K322LS-IP	SST	获取价格	Modem, CMOS, PDIP22

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