SMC Networks ARM PL241 - Manual (Page 59)

Functional Overview
ARM DDI 0389B Copyright © 2006 ARM Limited. All rights reserved. 2-39
For t
WC
:
• when using memory devices that are not wait-enabled, you must program t
WC
to
be the number of clock cycles required before the first data is written, following
the assertion of cs_n
• when using memory devices that are wait-enabled, you must program t
WC
to be
the number of clock cycles required before wait is active and stable, following the
assertion of cs_n. That is:
t_WC = 3
Note
If a memory device is configured so that there are two or less clock cycles
between the assertion of wait and data being required then you must program t
WC
as if the memory device is not wait-enabled.