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PRELIMINARY
S3C6400X RISC MICROPROCESSOR
SROM CONTROLLER
6-3
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
nWAIT PIN OPERATION
If the WAIT operation corresponding to each memory bank is enabled, the nOE duration will be prolonged by the
external nWAIT pin while the memory bank is active. nWAIT is checked from tacc-1. nOE will be deasserted at
the next clock after sampling nWAIT is high. The nWE signal have the same relation with nOE.
tRC
Tacs
Tcos
Tacc=4
HCLK
ADDR
nGCS
nOE
nWAIT
DATA(R)
Delayed
Sampling nWAIT
Figure 6-2 SROM Controller nWAIT Timing Block Diagram