NXP Semiconductors K32 L2A Series, Reference Manual, Page: 266 / 1379

14.3.7.4 Command packet
The command packet carries a 32-bit command header and a list of 32-bit parameters.
Table 14-11. Command Packet Format
Command Packet Format (32 bytes)
Command Header (4 bytes) 28 bytes for Parameters (Max 7 parameters)
Tag Flags Rsvd Param
Count Param1
(32-bit) Param2
(32-bit) Param3
(32-bit) Param4
(32-bit) Param5
(32-bit) Param6
(32-bit) Param7
(32-bit)
byte 0 byte 1 byte 2 byte 3
Table 14-12. Command Header Format
Byte # Command Header Field
0 Command or Response tag The command header is 4 bytes long, with
these fields.
1 Flags
2 Reserved. Should be 0x00.
3 ParameterCount
The header is followed by 32-bit parameters up to the value of the ParameterCount field
specified in the header. Because a command packet is 32 bytes long, only 7 parameters
can fit into the command packet.
Command packets are also used by the target to send responses back to the host. As
mentioned earlier, command packets and data packets are embedded into framing packets
for all of the transfers.
Table 14-13. Commands that are supported
Command Name
0x01 FlashEraseAll
0x02 FlashEraseRegion
0x03 ReadMemory
0x04 WriteMemory
0x05 FillMemory
0x06 FlashSecurityDisable
0x07 GetProperty
0x08 ReceiveSBFile
0x09 Execute
0x0A Call
0x0B Reset
0x0C SetProperty
0x0D FlashEraseAllUnsecure
Table continues on the next page...
Functional Description
K32 L2A Reference Manual, Rev. 2, 01/2020
266 NXP Semiconductors