BLOCK DIAGRAM—ÉlanSC410 MICROCONTROLLER
ÉlanSC410 Microcontroller
Addr
Memory
System Address Bus
Management
Data
Unit
®
Am486
CPU
Address
Decoder
Addr
Dual DMA
Controllers
8237
Data Bus
Data
Steering
Power
Management
Unit
GPIOs
Internal
Bus
Clock
Generation
Clock I/O
Local Bus Controller
Local Bus
Controller
Real-Time
Clock
32-kHz Crystal
Boundary
Scan
System
Arbiter
AT Port
Logic
GPIOs
Timer
8254
DRAM Control
ROM Control
Memory
Controller
Dual Interrupt
Controllers
8259
DRAM Control or
Keyboard Rows
GPIOs
GPIOs or
GPIOs
GPIOs or
Parallel Port
Keyboard Rows
EPP
Parallel
Port
Keyboard
Interface:
Matrix/XT/SCP
Columns or
XT Keyboard
Serial Port
Infrared
ISA Control or
UART
16550
Keyboard Rows
ISA Bus
Controller
ISA Control
Infrared
Port
ISA Control or
GPIOs
GPIOs
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
5