Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
494
25.18.20 SMC Timings Register
Name: SMC_TIMINGSx [x=0..7]
Address: 0x400E007C [0], 0x400E0090 [1], 0x400E00A4 [2], 0x400E00B8 [3], 0x400E00CC [4], 0x400E00E0 [5],
0x400E00F4 [6], 0x400E0108 [7]
Access: Read-write
Reset: 0x00000000
• TCLR: CLE to REN Low Delay
Command Latch Enable falling edge to Read Enable falling edge timing.
Latch Enable Falling to Read Enable Falling = (TCLR[3] * 64) + TCLR[2:0] clock cycles.
• TADL: ALE to Data Start
Last address latch cycle to the first rising edge of WEN for data input.
Last address latch to first rising edge of WEN = (TADL[3] * 64) + TADL[2:0] clock cycles.
• TAR: ALE to REN Low Delay
Address Latch Enable falling edge to Read Enable falling edge timing.
Address Latch Enable to Read Enable = (TAR[3] * 64) + TAR[2:0] clock cycles.
• OCMS: Off Chip Memory Scrambling Enable
When set to one, the memory scrambling is activated.
• TRR: Ready to REN Low Delay
Ready/Busy signal to Read Enable falling edge timing.
Read to REN = (TRR[3] * 64) + TRR[2:0] clock cycles.
• TWB: WEN High to REN to Busy
Write Enable rising edge to Ready/Busy falling edge timing.
Write Enable to Read/Busy = (TWB[3] * 64) + TWB[2:0] clock cycles.
• RBNSEL: Ready/Busy Line Selection
This field indicates the selected Ready/Busy Line from the RBN bundle.
31 30 29 28 27 26 25 24
NFSEL RBNSEL TWB
23 22 21 20 19 18 17 16
–––– TRR
15 14 13 12 11 10 9 8
–––OCMS TAR
76543210
TADL TCLR