73K222AL
V.22, V.21, Bell 212A, 103
Single-Chip Modem
DATA SHEET
JULY 2005
DESCRIPTION
The 73K222AL is a highly integrated single-chip
modem IC which provides the functions needed to
construct a CCITT V.22, V.21 and Bell 212A
compatible modem, capable of 1200 bit/s full-duplex
operation over dial-up lines. The 73K222AL is an
enhancement of the 73K212L/AL single-chip modem
which adds V.22 and V.21 modes to the Bell 212A and
103 operation of the 73K212AL. In Bell 212A mode,
the 73K222AL provides the normal Bell 212A and 103
functions and employs a 2225 Hz answer tone. The
73K222AL in V.22 mode produces either 550 or 1800
Hz guard tone, recognizes and generates a 2100 Hz
answer tone, and allows 600 bit/s V.22 or 0-300 bit/s
V.21 operation. The 73K222AL 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
PLCC configuration. The 73K222AL operates from a
single +5V supply. The 73K222AL is a new version
replacing the 73K222L. The 73K222AL should be
specified for all new designs.
The 73K222AL includes the DPSK and FSK
modulator/demodulator functions, call progress and
handshake tone monitor and a tone generator capable
of tone required for European applications.
(continued)
FEATURES
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One-chip CCITT V.22, V.21, Bell 212A and Bell
103 standard compatible modem data pump
Full-duplex operation at 0-300 bit/s (FSK) or 600
and 1200 bit/s (DPSK)
Pin and software compatible with other
TERIDIAN Semiconductor Corporation K-Series
1-chip modems
Interfaces
directly
with
standard
microprocessors (8048, 80C51 typical)
Serial or parallel microprocessor bus for control
Serial port for data transfer
Both synchronous and asynchronous modes of
operation including V.22 extended overspeed
Call progress, carrier, precise answer tone
(2100 or 2225 Hz), and long loop detectors
DTMF, and 550 or 1800 Hz guard tone
generators
Test modes available: ALB, DL, RDL, Mark,
Space, Alternating bit patterns
Precise automatic gain control allows 45 dB
dynamic range
CMOS technology for low power consumption
using 60 mW @ 5V
Single +5 volt supply
PLCC package
BLOCK DIAGRAM
AD0-AD7
DATA
BUS
BUFFER
8-BIT
BUS
FOR
RD
WR
ALE
CS
RESET
READ
WRITE
CONTROL
LOGIC
CONTROL
AND
STATUS
DIGITAL
PROCESSING
PSK
MODULATOR/
DEMODULATOR
FSK
MODULATOR/
DEMODULATOR
DTMF &
TONE
GENERATORS
TRANSMIT
FILTER
RECEIVE
FILTER
TXA
RXA
INT
STATUS
AND
CONTROL
LOGIC
TXD
RXD
SERIAL
PORT
FOR
DATA
TESTS:
ALB, DLB
RDLB
PATTERNS
CLOCK
GENERATOR
SMART
DIALING
&
DETECT
FUNCTIONS
POWER
RXCLK
TXCLK
CLK
XTL1
EXCLK
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XTL2
GND
VREF
VDD
ISET
©
2007 TERIDIAN Semiconductor Corporation
Rev 6.1
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
