ARM AMBA NIC-301 Dokumentacja Pobierz pdf (Strona 49)

Hardware Description

ID062813 Non-Confidential

2.8 Interrupts

This section describes the daughterboard interrupts. It consists of the following subsections:

• Overview of interrupts

• Interrupts on page 2-35.

2.8.1 Overview of interrupts

The Cortex-A15 MPCore test chip implements a Generic Interrupt Controller, GIC-400, with

32 internal interrupts and 160 external interrupts as follows:

Internal interrupts

The 32 internal interrupts connect internally between the cores and the GIC.

External interrupts

• The IOFPGA on the motherboard connects to 26 of the 160 external

interrupts through the SB.

• The Cortex-A15 cluster connect to 8 of the external interrupts.

• The Cortex-A7 cluster connect to 12 of the external interrupts.

• The test chip peripherals connect to 21 of the external interrupts.

• 65 external interrupts are reserved.

The CoreTile Express A15×2 A7×3 daughterboard does not send interrupts to the second

daughterboard. You can route interrupts to the CoreTile Express A15×2 A7×3 daughterboard

from the second daughterboard through the motherboard IOFPGA using SB2_INT[3:0] that

loops back to SB_IRQ. Table 2-11 on page 2-35 shows the interrupt mapping.

Figure 2-13 on page 2-35 shows an overview of the Cortex-A15_A7 MPCore test chip interrupt

signals.

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 177 178

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ARM AMBA NIC-301 Dokumentacja Strona 49