RM0090: Reference manual - STMicroelectronics

RM0090 Flexible static memory controller (FSMC)
Table 199. FSMC_BTRx bit fields
Bit number Bit name Value to set
31-30 0x0
29-28 ACCMOD 0x1 if extended mode is set
27-20 0x000
19-16 BUSTURN Time between NEx high to NEx low (BUSTURN HCLK)
15-8 DATAST
Duration of the access second phase (DATAST HCLK cycles) in
read.
7-4 0x0
3-0 ADDSET
Table 200. FSMC_BWTRx bit fields
Bit
number
Duration of the access first phase (ADDSET HCLK cycles) in read.
Minimum value for ADDSET is 0.
Bit name Value to set
31-30 0x0
29-28 ACCMOD 0x1 if extended mode is set
27-20 0x000
19-16 BUSTURN Time between NEx high to NEx low (BUSTURN HCLK)
15-8 DATAST
Duration of the access second phase (DATAST+1 HCLK cycles) in
write.
7-4 0x0
3-0 ADDSET
Duration of the access first phase (ADDSET HCLK cycles) in write.
Minimum value for ADDSET is 0.
Note: The FSMC_BWTRx register is valid only if extended mode is set (mode B), otherwise all its
content is don’t care.
Doc ID 018909 Rev 3 1330/1416