Texas Instruments Extensa 60x Series - Page 68

4-22 Theory of Operation
A simplified block diagram of the Super I/O controller is provided in Figure 4-10.
Figure 4-10 Super I/O Controller Block Diagram
•
Plug and Play Compatible:
•
16 bit addressing(full programmable)
•
10 selectable IRQs
•
3 selectable DMA Channels
•
3 SIRQ Inputs allows external devices to mapping IRQs
100-Pin TQFP package - PC87336VJG
Configuration
Registers
UART
(16550 or 16450)
UART
+ IrDA/HP & Sharp IR
(16550 or 16450)
General
Purpose
Registers
Power
Down Logic
IEEEE1284
Parallel Port
Hifh Current Driver
Floppy Disk
Controller with
Digital Data
Separator
(Enhabced 8477)
I/O Ports Control
Interrupt Data Handshake
Floppy
Drive
Interface
OSC
Interrupt
and
DMA
Floppy
Drive
Interface
Interrupt
IR
Interface
Serial
Interface
Interrupt
Serial
Interface
Config.
Inputs