ARM AMBA NIC-301 Specifikace stáhnout pdf (Strana 120)

Programmers Model

ID062813 Non-Confidential

CNTCR

The CNTCR Register characteristics are:

Purpose System counter control register that enables you to read and write system

counter configuration settings that halt it on debug and enable or disable

the counter.

Usage constraints There are no usage constraints.

Configurations Not applicable.

Attributes See Table 3-43 on page 3-62.

Figure 3-30 shows the bit assignments.

Figure 3-30 System counter CNTCR Control Register bit assignments

Table 3-44 shows the bit assignments.

CNTCVL

The CNTCVL Register characteristics are:

Purpose System counter lower 32 bits control register that enables you to read and

write the system counter lower 32 bits.

Usage constraints There are no usage constraints.

Configurations Not applicable.

Attributes See Table 3-43 on page 3-62.

Figure 3-31 on page 3-64 shows the bit assignments.

31 0

0 00000 0 000000000000 0000 000000 01

Reserved

HDBG

Table 3-44 System counter CNTCR Control Register bit assignments

Bits Name Function

[31:] - Reserved. Do not modify.

[1] HDBG Halts on debug:

Debug signal into the counter has no effect.

Debug signal into the counter halts the count.

The default is

[0] EN Enable counter:

Disable counter. Count is at reset value and not incrementing.

Enable counter. Count is incrementing.

The default is

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 ... 177 178

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ARM AMBA NIC-301 Specifikace Strana 120