- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382812 > 73K321L (TDK Corporation) Miniature Switch, High Precision PDF資料下載
參數(shù)資料
| 型號： | 73K321L |
| 廠商： | TDK Corporation |
| 英文描述： | Miniature Switch, High Precision |
| 中文描述： | 國際電話電報諮詢委員會.23，.21單芯片調制解調器 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 140K |
| 代理商： | 73K321L |
73K321L
CCITT V.23, V.21
Single-Chip Modem
April 2000
DESCRIPTION
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.
The
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
the
systems
designer
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
demultiplexing.
Data
through a separate serial port only.
73K321L
includes
the
FSK
as
a
microprocessor
communications
occurs
(continued)
FEATURES
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
DTMF generator
Test modes available: ALB, DL, RDL, Mark,
Space, Alternating bit patterns
Precise automatic gain control allows 45 dB
dynamic range
CMOS
consumption using 60 mW @ 5V from a
single power supply
technology
for
low
power
BLOCK DIAGRAM
DTMF &
TONE
GENERATORS
FSK
MODULATOR/
DEMODULATOR
SMART
DIALING
&
DETECT
FUNCTIONS
POWER
TESTS:
ALB,DLB
RDLB
PATTERNS
TRANSMIT
FILTER
DATA
BUS
BUFFER
READ
WRITE
CONTROL
LOGIC
STATUS
AND
CONTROL
LOGIC
8-BIT
BUS
FOR
CONTROL
AND
STATUS
SERIAL
PORT
FOR
DATA
TXA
RXA
I
V
V
G
R
CLOCK
GENERATOR
X
X
C
T
E
RD
WR
CS
RESET
INT
TXD
RXD
AD0-AD7
RECEIVE
FILTER
相關PDF資料 |
PDF描述 |
|---|---|
| 73K322L-IH | CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IP | CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L | CCITT V.23, V.22, V.21 Single-Chip Modem(CCITT V.23, V.22, V.21單片Modem) |
| 73M223 | 1200 Baud FSK Modem |
| 73M223-CL | 1200 Baud FSK Modem |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 73K321L-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
| 73K321L-IP | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
| 73K322L | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IP | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
發(fā)布緊急采購，3分鐘左右您將得到回復。