English
Language : 

RM0385 Datasheet, PDF (338/1644 Pages) STMicroelectronics – This reference manual targets application developers
Flexible memory controller (FMC)
RM0385
Figure 50. Synchronous multiplexed read mode waveforms - NOR, PSRAM (CRAM)
0HPRU\WUDQVDFWLRQ EXUVWRIKDOIZRUGV
+&/.
&/.
$>@
DGGU>@
1([
12(
1:( +LJK
1$'9
1:$,7
:$,7&)*

$'>@
'$7/$7
&/.F\FOHV
$GGU>@
GDWD
LQVHUWHGZDLWVWDWH
GDWD
GDWD
GDWD
FORFN FORFN
F\FOH F\FOH
'DWDVWUREHV
'DWDVWUREHV
DLI
1. Byte lane outputs (NBL are not shown; for NOR access, they are held high, and, for PSRAM (CRAM)
access, they are held low.
Bit number
Bit name
Table 77. FMC_BCRx bit fields
Value to set
31-22
21
20
19
18:16
15
14
13
12
Reserved 0x000
WFDIS As needed
CCLKEN As needed
CBURSTRW No effect on synchronous read
CPSIZE 0x0 (no effect in asynchronous mode)
ASYNCWAIT 0x0
EXTMOD 0x0
WAITEN
To be set to 1 if the memory supports this feature, to be kept at 0
otherwise
WREN
no effect on synchronous read
338/1644
DocID026670 Rev 1