DocID018909 Rev 11 1553/1731
RM0090 Flexible static memory controller (FSMC)
1588
Muxed mode - multiplexed asynchronous access to NOR Flash memory
Figure 445. Multiplexed read accesses
Table 234. FSMC_BWTRx bit fields
Bit No. Bit name Value to set
31:30 Reserved 0x0
29-28 ACCMOD 0x3
27-24 DATLAT 0x0
23-20 CLKDIV 0x0
19-16 BUSTURN Time between NEx high to NEx low (BUSTURN HCLK)
15-8 DATAST
Duration of the second access phase (DATAST+1 HCLK cycles) for
write accesses
7-4 ADDHLD
Duration of the middle phase of the write access (ADDHLD HCLK
cycles)
3-0 ADDSET[3:0]
Duration of the first access phase (ADDSET+1 HCLK cycles) for
write accesses. Minimum value for ADDSET is 0.
A[25:16]
NOE
ADDSET DATAST
Memory transaction
NEx
AD[15:0]
HCLK cycles HCLK cycles
NWE
NADV
data driven
by memory
ai15568
High
ADDHLD
HCLK cycles
Lower address