Texas Instruments Extensa 60x Series Maintenance Manual page 68

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
A simplified block diagram of the Super I/O controller is provided in Figure 4-10.
Config.
Inputs
Configuration
Registers
General
Purpose
Registers
I/O Ports
4-22 Theory of Operation
Serial
Interrupt
Interface
UART
(16550 or 16450)
Power
Down Logic
Hifh Current Driver
Control
Interrupt
Figure 4-10 Super I/O Controller Block Diagram
Serial IR
Interrupt
Interface Interface
UART
+ IrDA/HP & Sharp IR
(16550 or 16450)
Floppy
Drive
IEEEE1284
Interface
Parallel Port
Data Handshake
Floppy Disk
Floppy
Controller with
Drive
Digital Data
Interface
Separator
(Enhabced 8477)
Interrupt
OSC
and
DMA