PXD20RM Datasheet, PDF (1272/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

information is given in number of bytes. Note that the mapping reflects the bits which are actually sent to
the single serial flash device selected in the Individual Flash Mode or which are sent to each of the two
serial flash devices in the Parallel Flash Mode.
Table 35-53. ICO Field on Numonyx Devices - All Flash Access Modes
Instruction
QSPI_ICR[ICO]
Code
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
01h
Size
02h
Size (bytes to be written)
05h
Size
32h
Size (bytes to be written)
35h
Size
03h
0Bh
3Bh
Individual Flash Access: Refer to Table 35-54
BBh
Parallel Flash Access: Refer toTable 35-55
6Bh
EBh
90h
Size
9Fh
Size
ABh
read¹
1 _{‘read’ bit controls if up to 80 clocks are added to read the electronic signature, equivalent to Size = 10 (10bytes to read). In}
any case 24 dummy bits are transmitted after the instruction code to allow reading.
Table 35-54. ICO Field on Numonyx Devices - Individual Flash Mode
Instruction
QSPI_ICR[ICO]
Code
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
03h
Size (bytes to be read)
0Bh
Size (bytes to be read)
3Bh
Size (bytes to be read)
BBh
Size (bytes to be read)
6Bh
Size (bytes to be read)
EBh
Size (bytes to be read)
M7 - M0
M7 - M0
Since both serial flash devices are treated logically as one single device doubled in size, the amount of data
that must be read from each single flash device is half the amount of data specified in the QSPI_ICR[ICO]
field.
35-62
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor