RC224ATL Datasheet, PDF (1/104 Pages) Conexant Systems, Inc – EmbeddedModem Family

RC224ATL/224ATLV
EmbeddedModem Family
The new Conexant RC224ATL utilizes a new integrated data pump/controller to allow
the device to directly connect to host processors that are 3.3 V I/O capable. The codec
used in the new part is the same as the codec used in the existing RC224ATL. The
new device is form, fit, and function compatible with the existing device. This means
there are no hardware and software differences between the existing and the new part,
with one exception. The 3.3 V I/O capable part incorporates 3.3 V compatible digital
I/O buffers, hence requiring 3.3 V digital supply instead of 5 V digital supply.
In addition, unlike the current version of RC224ATL, the new part provides both
data and fax capabilities.
Data modes, controlled by an industry standard 2400 AT command set, can
transmit and receive up to 2400 bps.
Fax modes, controlled by a built-in EIA-578 Class 1 command interface, provide
Group 3 transmit and receive functions.
Functional Block Diagram
Modem
Data Pump
V.24
EIA-232-D
Interface
Modem
Controller
Crystal
Telephone
Line
Interface
Modem
LED
Indictors
Optional
NVRAM
Optional
Speaker
Distinguishing Features
• Data modes
– CCITT V.22 bis (2400 bps), V.22
(1200 bps)
– Bell 212A (1200 bps) and 103
(300 bps)
– Enhanced AT commands
• Group 3 fax modes
– V.29 (9600/7200 bps) transmit
– V.27 ter (4800/2400 bps)
transmit and receive
– V.21 Channel 2 (300 bps)
transmit and receive
• EIA-578 Service Class 1 commands
• V.42/MNP2-4 and V.42 bis/MNP 5
can be supported through host
software without additional hardware
• Data/fax discriminator and auto
answering
• Communications software
compatible
• Integrated call progress and dialing
• No external microcomputer or
memory required
• Parallel or serial asynchronous DTE
interface
• A/A1 relay control
• NVRAM interface allows storage of
two user configurations and four
36-digit dial strings
• Automatic adaptive/fixed
compromise equalization
• Programmable sleep mode and
wake-up
• Full-duplex data mode test
capabilities: Analog loop, local digital
loop, and remote digital loop
• Half-duplex fax mode test capabilities
• Automatic format/speed sensing
• Low power consumption (typical)
– Operating: 100 mW
– Sleep—Idle: 25 mW
– Sleep—Stop: 5 mW
• Single +5 V power supply or Dual
+ 3.3 VDD and + 5 VAA power
supplies
• Package options:
– 68-pin plastic leaded chip carrier
(PLCC)
– 100-pin plastic quad flat pack
(PQFP)
Data Sheet
D224ATLVDSC
March 25, 1999