Datasheet

37.8.12 Instruction Frame
Name: INSTRFRAME
Offset: 0x38
Reset: 0x00000000
Property: -
Bit 31 30 29 28 27 26 25 24
Access
Reset
Bit 23 22 21 20 19 18 17 16
DUMMYLEN[4:0]
Access
R/W R/W R/W R/W R/W
Reset 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
DDREN CRMODE TFRTYPE[1:0] ADDRLEN OPTCODELEN[1:0]
Access
R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
DATAEN OPTCODEEN ADDREN INSTREN WIDTH[2:0]
Access
R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0
Bits 20:16 – DUMMYLEN[4:0] Dummy Cycles Length
The DUMMYLEN field defines the number of dummy cycles required by the serial Flash memory before
data transfer.
Bit 15 – DDREN Double Data Rate Enable
Value Description
0
Double Data Rate operating mode is disabled.
1
Double Data Rate operating mode is enabled.
Bit 14 – CRMODE Continuous Read Mode
This bit defines if the Continuous Read Mode is enabled or disabled.
Value Description
0
Continuous Read Mode is disabled.
1
Continuous Read Mode is enabled.
Bits 13:12 – TFRTYPE[1:0] Data Transfer Type
These bits define the data type transfer.
Value Name Description
0x0
READ Read transfer from the serial memory.Scrambling is not performed.Read
at random location (fetch) in the serial flash memory is not possible.
SAM D5x/E5x Family Data Sheet
QSPI - Quad Serial Peripheral Interface
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1104