NEC Network Controller uPD98502 - Manual (Page 187)

CHAPTER 3 SYSTEM CONTROLLER
Preliminary User’s Manual S15543EJ1V0UM 187
3.1.9 System block diagram
System Controller
IBUS
SysAD
TIMER
IBUS Master-IF
Flash
PROM
SDRAM
RS-232C
Flash-IF
SDRAM-
UART
Register
Memory
Arbiter
MIF HIF
DSU
SysAD-IF SysAD-IF
Prefetch
Buffer
Write
Buffer
64-word
Read
Buffer
64-word
Write
Buffer
Write
Buffer
IBUS Slave-IF
Read
Buffer
MICRO
WIRE
Serial
ROM