Datasheet

467
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
25.18.1 SMC NFC Configuration Register
Name: SMC_CFG
Address: 0x400E0000
Access: Read-write
Reset: 0x00000000
• PAGESIZE
This field defines the page size of the NAND Flash device.
• WSPARE: Write Spare Area
0: The NFC skips the spare area in write mode.
1: The NFC writes both main area and spare area in write mode.
• RSPARE: Read Spare Area
0: The NFC skips the spare area in read mode.
1: The NFC reads both main area and spare area in read mode.
• EDGECTRL: Rising/Falling Edge Detection Control
0: Rising edge is detected.
1: Falling edge is detected.
• RBEDGE: Ready/Busy Signal Edge Detection
0: When set to zero, RB_EDGE fields indicate the level of the Ready/Busy lines.
1: When set to one, RB_EDGE fields indicate only transition on Ready/Busy lines.
• DTOCYC: Data Timeout Cycle Number
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
– DTOMUL DTOCYC
15 14 13 12 11 10 9 8
– – RBEDGE EDGECTRL – – RSPARE WSPARE
76543210
–––––– PAGESIZE
Value Name Description
0 PS512_16 Main area 512 Bytes + Spare area 16 Bytes = 528 Bytes
1 PS1024_32 Main area 1024 Bytes + Spare area 32 Bytes = 1056 Bytes
2 PS2048_64 Main area 2048 Bytes + Spare area 64 Bytes = 2112 Bytes
3 PS4096_128 Main area 4096 Bytes + Spare area 128 Bytes = 4224 Bytes