STMicroelectronics STM32F429 Reference Manual

DocID018909 Rev 11 1645/1731
RM0090 Flexible memory controller (FMC)
1669
Common memory space timing register 2..4 (FMC_PMEM2..4)
Address offset: Address: 0x48 + 0x20 * (x – 1), x = 2..4
Reset value: 0xFCFC FCFC
Each FMC_PMEMx (x = 2..4) read/write register contains the timing information for PC Card
or NAND Flash memory bank x. This information is used to access either the common
memory space of the 16-bit PC Card/CompactFlash, or the NAND Flash for command,
address write access and data read/write access.
Bit 3 IREN: Interrupt rising edge detection enable bit
0: Interrupt rising edge detection request disabled
1: Interrupt rising edge detection request enabled
Bit 2 IFS: Interrupt falling edge status
The flag is set by hardware and reset by software.
0: No interrupt falling edge occurred
1: Interrupt falling edge occurred
Note:
This bit is set by programming it to 1 by software.
Bit 1 ILS: Interrupt high-level status
The flag is set by hardware and reset by software.
0: No Interrupt high-level occurred
1: Interrupt high-level occurred
Bit 0 IRS: Interrupt rising edge status
The flag is set by hardware and reset by software.
0: No interrupt rising edge occurred
1: Interrupt rising edge occurred
Note:
This bit is set by programming it to 1 by software.
313029282726252423222120191817161514131211109876543210
MEMHIZ[7:0] MEMHOLD[7:0] MEMWAIT[7:0] MEMSET[7:0]
rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw
Bits 31:24 MEMHIZ[7:0]: Common memory x data bus Hi-Z time
Defines the number of HCLK clock cycles during which the data bus is kept Hi-Z after the start
of a PC Card/NAND Flash write access to common memory space on socket x. This is only
valid for write transactions:
0000 0000: 1 HCLK cycle
1111 1110: 255 HCLK cycles
1111 1111: Reserved.
Bits 23:16 MEMHOLD[7:0]: Common memory x hold time
Defines the number of HCLK clock cycles during which the address is held (and data for write
accesses) after the command is deasserted (NWE, NOE), for PC Card/NAND Flash read or
write access to common memory space on socket x:
0000 0000: reserved
0000 0001: 1 HCLK cycle
1111 1110: 254 HCLK cycles
1111 1111: Reserved.

STMicroelectronics STM32F429 Specifications

General

Brand	STMicroelectronics
Model	STM32F429
Category	Controller
Language	English