Texas Instruments TMS320C28x Reference Manual page 254

IACK #16bit
SYNTAX OPTIONS
IACK #16bit
Operands #16bit
Description
Flags and
Modes
Repeat
0111 0110 0011 1111
CCCC CCCC CCCC CCCC
16-bit constant immediate value (0x0000 to 0xFFFF range)
Acknowledge an interrupt by outputting the specified 16-bit constant on the
low 16 bits of the data bus. Certain peripherals will provide the capability to
capture this value to provide low-cost trace. See the data sheet for details for
your device.
data_bus(15:0) = 16bit;
None
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
Interrupt Acknowledge
OPCODE OBJMODE
IACK #16bit
RPT CYC
X − 1
6-97