73K224L-28IH/F TERIDIAN [Teridian Semiconductor Corporation], 73K224L-28IH/F Datasheet
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73K224L-28IH/F
Manufacturer Part Number
73K224L-28IH/F
Description
Single-Chip Modem
Manufacturer
TERIDIAN [Teridian Semiconductor Corporation]
Datasheet
1.73K224L-28IHF.pdf
(31 pages)
Simplifying System Integration™
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
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
BLOCK DIAGRAM
Page: 1 of 31
TXD
RXD
SERIAL
8-BIT
BUS
I/F
I/F
P
interface
with
DEBUFFER
BUFFER
popular
SCRAMBLER
SCRAMBLER
DE-
©
2005, 2008 TERIDIAN Semiconductor Corporation
single-chip
DECODER
QUADBIT
DIBIT/
(continued)
ENCODER
QUADBIT
DIBIT/
MODULATOR
TONE DETECTION
PROCESSOR
FSK
FUNCTIONS
SHAPER
RECEIVE
PULSE
DIGITAL
SIGNAL
FIR
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
V.22bis, V.22, V.21, Bell 212A, 103
MODULATOR
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
modems
Interfaces directly with standard microcontrollers
(80C51 typical)
Parallel microcontroller bus for modem control and
status monitoring functions
Selectable
buffer/debuffer
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
QAM/
DPSK
A/D
FILTER
DEMOD
FIXED
+
GENERATOR
ANSWER,
GUARD &
EQUALIZER
CALLING
DTMF,
TONE
EQUALIZER
asynch/synch
DATA SHEET
Corporation
Single-Chip Modem
and
AGC
FILTER
FILTER
scrambler/descrambler
+
ATTEN
GAIN BOOST
K-Series
with
73K224L
JUNE 2008
FILTER
FILTER
internal
Rev 7.1
1-chip
TXA
RXA