15.6.2. CTI Interrupt Acknowledge Register, CTIINTACK

CTIINTACK is a write-only register used to acknowledge the nCTIIRQ and EDBGRQ trigger outputs. When the nCTIIRQ trigger output is asserted, it continues to be asserted until you write to bit [8] of this register. When the EDBGRQ trigger output is asserted, it continues to be asserted until you write to bit [0] of this register.

Figure 15.5 shows the bit arrangement of the CTIINTACK Register.

Figure 15.5. CTI Interrupt Acknowledge Register format


Table 15.5 shows how the bit values correspond with the CTIINTACK Register functions.

Table 15.5. CTI Interrupt Acknowledge Register bit functions

BitsFieldFunction

[31:9]

-

SBZ.

[8]

nCTIIRQ acknowledge

Acknowledges the nCTIIRQ output:

0 = no acknowledgement

1 = nCTIIRQ is acknowledged and is deasserted.

[7:1]-

SBZ.

[0][1]EDBGRQ acknowledge

Acknowledges the EDBGRQ trigger output:

0 = no acknowledgement

1 = EDBGRQ trigger output is acknowledged and is deasserted.

[1] Bit [0] EDBGRQ acknowledge of this register is only present in revision r3 of the Cortex-A8 processor. In revisions r0 through r2, this bit is SBZ.


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