73K222AL
| Model | 73K222AL |
| Description | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| PDF file | Total 28 pages (File size: 163K) |
| Chip Manufacturer | TDK |
73K222AL
V.22, V.21, Bell 212A, 103
Single-Chip Modem
April 2000
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
DIP, PLCC and 44-pin TQFP 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 TDK
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 and PDIP packages
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
SMART
DIALING
&
DETECT
FUNCTIONS
CLOCK
GENERATOR
POWER
RXCLK
TXCLK
CLK
XTL1
EXCLK
XTL2
GND
VREF
VDD
ISET
Related PDFs
| Model | Description | Manufacturer | Operation |
|---|---|---|---|
 73K222AL-IGT
|
V.22, V.21, Bell 212A, 103 Single-Chip Modem | TDK | Preview |
|
73K222AL-IH
|
V.22, V.21, Bell 212A, 103 Single-Chip Modem | TDK | Preview |
|
73K222AL-IP
|
V.22, V.21, Bell 212A, 103 Single-Chip Modem | TDK | Preview |
