2-50 Service Guide

2.6.2 Block Diagram

Confi
g
uration
Re
g
isters UART
(16550 or 16450)
UART
+ IrDA/HP & Sharp IR
(16550 or 16450)
General
Purpose
Re
g
isters
Power
Down Lo
g
ic
IEEEE1284
Parallel Port
Hifh Current Driver
Floppy Disk
Controller with
Di
g
ital 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
Confi
g
.
Inputs

Figure 2-8 NS97338VJG Block Diagram