DM562AP_07 Datasheet, PDF (1/48 Pages) Davicom Semiconductor, Inc. – V.90 Integrated Data/ Fax/Voice/Speakerphone Modem Device Single Chip with Memory Built in

DM562AP
V.90 Integrated Data/ Fax/Voice/Speakerphone
Modem Device Single Chip with Memory Built in

General Description
The DM562AP integrated modem is a two-chipset
design that provides a complete solution for
state-of-the-art, voice-band Plain Old Telephone
Switching (POTS) communication. The modem
provides for Data (up to 56,000bps), Fax (up to
33,600bps), fast connection, Voice and Full Duplex
Speaker-phone functions to comply with various
international standards.
The design of the DM562AP is optimized for
desktop personal computer applications, embedded
microprocessor applications, Set-Top-Box (STB),
Point-Of-Sale (POS), and Multi-Function Peripheral
(MFP) FAX application. It provides a low cost,
highly reliable, maximum integration, with the
minimum amount of supports required. The
DM562AP modem can operate over a dial-up
network (PSTN) or 2 wire leased lines.
The modem integrates auto dial and answer
capabilities, synchronous/asynchronous data
transmissions, serial and parallel interfaces, various
tone detection schemes and data test modes.
The DM562AP modem reference design is
pre-approved for FCC part 68 and provides
minimum design cycle time, with minimum cost to
insure the maximum amount of success.
The simplified modem system, shown in figure
below, illustrates the basic interconnection between
the MCU, DSP, AFE and other basic components of
a modem. The individual elements of the DM562AP
are:
• DM6580 Analog Front End (AFE). 48-pin LQFP
package.
• DM6588A ITU-T V.90 integrated Processors
with 32K bytes SRAM built in 128-pin QFP
package
Block Diagram
Optional
29.4912MHz
PCI
Bus
ISA
Bus
LED
30.24MHz
Ring
Detector
Micro
Controller
Unit
TX
DSP
PnP 32KB
SRAM
UART
V.24
Interface
DM6588A
RX
DSP
SCLK
DIT
DOT
DM6580 _RxIN
TFS
DIR
TxA1 _DAA
Line
DOR
Analog ^TxA2
RFS
Front End
TXSCLK*2
RXSCLK
CLKIN
TXDCLK
RXDCLK
Speaker
SPKR
Driver
Microphone
Driver
V.24
Interface
2M
Flash
Final
1
Version: DM562AP-DS-F03
Nov. 09, 2007