Filter
Top Products
509
Chapter 31 External Bus
1.Overview of the External Bus Interface
1.2 Block Diagram
Figure 1-1 Block Diagram of the External Bus Interface
32 32
Internal address bus
Internal data bus
write buffer switch
switchread buffer
ADDRESS BLOCK
DATA BLOCK
+1 or +2
address buffer
ASZ
ASR
BRQ
BGRNT
RDY
RD
WR0,WR1,
WR2,WR3,
AS,BAA
SRAS,SCAS,
SWE,MCLKE,
DQMUU,DQMUL,
DQMLU,DQMLL
CS0
CS7
MUX
all-block control
registers
control
comparator
SDRAM control
RCR
refresh counter
underflow
External data bus
External address bus
External terminal controller