Datasheet

317
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
19.2.5.7 SAM3X/A Flash Select EEFC Command
The commands WPx, EA, xLB, xFB are executed using the current EFC controller. The default EEFC controller is
EEFC0. The Select EEFC command (SEFC) allows selection of the current EEFC controller.
19.2.5.8 Memory Write Command
This command is used to perform a write access to any memory location.
The Memory Write command (WRAM) is optimized for consecutive writes. Write handshaking can be chained; an
internal address buffer is automatically increased.
19.2.5.9 Get Version Command
The Get Version (GVE) command retrieves the version of the FFPI interface.
Table 19-15. Select EFC Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE SEFC
2 Write handshaking DATA
0 = Select EEFC0
1 = Select EEFC1
Table 19-16. Write Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE WRAM
2 Write handshaking ADDR0 Memory Address LSB
3 Write handshaking ADDR1 Memory Address
4 Write handshaking DATA *Memory Address++
5 Write handshaking DATA *Memory Address++
... ... ... ...
n Write handshaking ADDR0 Memory Address LSB
n+1 Write handshaking ADDR1 Memory Address
n+2 Write handshaking DATA *Memory Address++
n+3 Write handshaking DATA *Memory Address++
... ... ... ...
Table 19-17. Get Version Command
Step Handshake Sequence MODE[3:0] DATA[15:0]
1 Write handshaking CMDE GVE
2 Write handshaking DATA Version