Flexible static memory controller (FSMC) RM0090
1552/1731 DocID018909 Rev 11
The differences with mode1 are the toggling of NOE that goes on toggling after NADV
changes and the independent read and write timings.
Table 232. FSMC_BCRx bit fields
Bit No. Bit name Value to set
31-20 Reserved 0x000
19 CBURSTRW 0x0 (no effect on asynchronous mode)
18:16 CPSIZE 0x0 (no effect on asynchronous mode)
15 ASYNCWAIT
Set to 1 if the memory supports this feature. Otherwise keep
at 0.
14 EXTMOD 0x1
13 WAITEN 0x0 (no effect on asynchronous mode)
12 WREN As needed
11 WAITCFG Don’t care
10 WRAPMOD 0x0
9 WAITPOL Meaningful only if bit 15 is 1
8 BURSTEN 0x0
7 Reserved 0x1
6 FACCEN Set according to memory support
5-4 MWID As needed
3-2 MTYP[0:1] As needed
1 MUXEN 0x0
0 MBKEN 0x1
Table 233. FSMC_BTRx bit fields
Bit No. Bit name Value to set
31:30 Reserved 0x0
29-28 ACCMOD 0x3
27-24 DATLAT Don’t care
23-20 CLKDIV Don’t care
19-16 BUSTURN Time between NEx high to NEx low (BUSTURN HCLK)
15-8 DATAST
Duration of the second access phase (DATAST HCLK cycles) for
read accesses.
7-4 ADDHLD
Duration of the middle phase of the read access (ADDHLD HCLK
cycles)
3-0 ADDSET[3:0]
Duration of the first access phase (ADDSET HCLK cycles) for read
accesses. Minimum value for ADDSET is 0.
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