DM562AP
V.90 Integrated Data/ Fax/Voice/Speakerphone
Modem Device Single Chip with Memory Built in
4
Preliminary
Version: DM562AP-DS-P02
March 05, 2004
Chip 1:Integrated Processor Unit with PnP
DM6588A Description
The DM6588A Modem Control Unit is designed for
use in high speed internal and external modem
applications. The DM6588A incorporates a 80C32
micro-controller, a virtual 16550A UART with FIFO
mode, and Plug & Play control logic.
The DM6588A MCU performs general modem
control functions, and is also designed to provide
Plug and Play capability for PCI bus systems.
DM6588A Block Diagram
8032
Micro-Controller
I/O Control Logic
Virtual 16550
UART
PC Data Bus
IRQ & R/W Control
RS 232 Interface
Mode Selection
External ROM
Interface
Modem Control
Interface
PC Address Bus
PnP Control
Logic
ISA Interface
PCI Interface
DM6588A Features
•
Control interface support
•
Supports parallel and serial interfaces
•
Includes a 80C32 micro-controller
•
256K bytes maximum external program memory
•
64K bytes data memory built in
•
Provides automatic Plug and Play or software
configuration capabilities
•
Virtual 16550A UART compatible parallel
interface
•
Fully programmable serial interface:
- 6, 7 or 8-bit characters
- Even, odd, mark and none parity bit
generation and detection
- 1 and 2 stop bit generation
- Baud rate generation
- Includes I/O control logic for modem control
interface
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