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73K224L 参数 Datasheet PDF下载

73K224L图片预览
型号: 73K224L
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片调制解调器 [Single-Chip Modem]
分类和应用: 调制解调器
文件页数/大小: 31 页 / 243 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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73K224L
V.22bis, V.22, V.21, Bell 212A, 103
Single-Chip Modem
Simplifying System Integration™
DATA SHEET
JUNE 2008
DESCRIPTION
The 73K224L is a highly integrated single-chip
modem IC which provides the functions needed to
construct a V.22bis compatible modem, capable of
2400 bit/s full-duplex operation over dial-up lines. The
73K224L offers excellent performance and a high
level of functional integration in a single 28-pin DIP
package. This device supports V.22bis, V.22, V.21,
Bell 212A and Bell 103 modes of operation, allowing
both synchronous and asynchronous communication.
The 73K224L is designed to appear to the systems
designer as a microprocessor peripheral, and will
easily
interface
with
popular
single-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
communications normally occur through a separate
serial port. The 73K224L is pin and software
compatible with the 73K212L and 73K222L single-
chip modem ICs, allowing system upgrades with a
single component change.
The 73K224L operates from a single +5V supply for
low power consumption.
The 73K224L is ideal for use in either free-standing or
integral system modem products where full-duplex
(continued)
FEATURES
One-chip multi-mode V.22bis/V.22/V.21 and Bell
212A/103 compatible modem data pump
FSK (300 bit/s), DPSK (600, 1200 bit/s), or QAM
(2400 bit/s) encoding
Pin and software compatible with other TERIDIAN
Semiconductor
Corporation
K-Series 1-chip
modems
Interfaces directly with standard microcontrollers
(80C51 typical)
Parallel microcontroller bus for modem control and
status monitoring functions
Selectable
asynch/synch
with
internal
buffer/debuffer
and
scrambler/descrambler
functions
All synchronous and asynchronous operating
modes (internal, external, slave)
Adaptive equalization for optimum performance
over all lines
Programmable transmit attenuation (16 dB, 1 dB
steps), selectable receive boost (+18 dB)
Call progress, carrier, answer tone, unscrambled
mark, S1, and signal quality monitors
DTMF, answer and guard tone generators
Test modes available: ALB, DL, RDL, Mark, Space,
Alternating bit, S1 pattern
CMOS technology for low power consumption
(typically 100 mW @ 5V) with power-down mode
(15 mW @ 5V)
TTL and CMOS compatible inputs and outputs
BLOCK DIAGRAM
DTMF,
ANSWER,
GUARD &
CALLING
TONE
GENERATOR
FSK
MODULATOR
8-BIT
P
BUS
BUFFER
SCRAMBLER
DIBIT/
QUADBIT
ENCODER
TXA
FIR
PULSE
SHAPER
QAM/
DPSK
MODULATOR
+
EQUALIZER
FILTER
+
ATTEN
FILTER
I/F
FILTER
DEBUFFER
DE-
SCRAMBLER
DIBIT/
QUADBIT
DECODER
DIGITAL
SIGNAL
PROCESSOR
RECEIVE
FUNCTIONS
A/D
EQUALIZER
AGC
GAIN BOOST
RXA
FILTER
FILTER
TXD
SERIAL
I/F
RXD
TONE DETECTION
FIXED
DEMOD
Page: 1 of 31
©
2005, 2008 TERIDIAN Semiconductor Corporation
Rev 7.1