Field
NumTx
NumRx
RxStartAddr
Size
1 byte
1 byte
1 byte
Values
0-255
0-255
Description
Number of bytes to transmit
Number of bytes to receive
Start address of returned data. Specifies on what
transmitted byte the response is to be stored and
returned.
TxData
0-255 bytes
The data to be transmitted. The size is specified
by NumTx
If the number of bytes to receive is greater than number of bytes to transmit, then the
firmware will pad with the necessary 0x00 bytes. This is in order to save time-
consuming transfer from PC to the programmer.
Table 4-18. Answer format.
Field
Answer ID
Status1
data
Size
1 byte
1 byte
0-255 bytes
Values
CMD_SPI_MULTI
STATUS_CMD_OK
Description
Answer id
Will always read OK
The data read from the ISP bus as indicated in
the command
Status2
1 byte
STATUS_CMD_OK
Will always read OK
5 Parallel Programming Mode Commands
5.1 CMD_ENTER_PROGMODE_PP
This command will make the target device enter programming mode if it succeeds.
XML PATH: /AVRPART/ICE_SETTINGS/STK600/PpEnterProgMode/
Table 5-1. Command format.
Field
Command ID
stabDelay
progModeDelay
Size
1 byte
1 byte
1 byte
Values
CMD_ENTER_PROGMODE_PP
XML: stabDelay
XML: progModeDelay
Description
Command id
Delay (in ms) used for pin stabilization
Delay (in ms) in connection with the EnterProgMode
command execution
latchCycles
toggleVtg
1 byte
1 byte
XML: latchCycles
XML: toggleVtg
Number of xtal cycles used to latch OSCCAL
Toggle Vtg when entering prog.mode (0=no, 1=yes). For
parts with RSTDSBL functionality
powerOffDelay
1 byte
XML: powerOffDelay
Power-off delay. Additional delay (in ms) after Vtg is turned
off in order to make sure the Vtg is low enough
resetDelayMs
1 byte
XML: resetDelayMs
RSTDELAY #1 (in ms) Additional delay between Vtg is
turned on and reset goes high.
resetDelayUs
1 byte
XML: resetDelayUs
RSTDELAY #2(in us x 10) Additional delay between Vtg is
turned on and reset goes high. Total delay is RSTDELAY
#1 (ms) + RSTDELAY #2 (us x 10)
14
AVR079
8133A-AVR-04/08
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