ARM AMBA NIC-301 Especificações descarregar pdf (Página 134)

Programmers Model

ID062813 Non-Confidential

System timer register descriptions

This following sections describes the system timer registers.

CNTLPCT

The CNTLPCT Register characteristics are:

Purpose System timer physical count lower 32 bit register that enables you to read

the lower 32 bits of the physical count.

Usage constraints This register is read-only.

Configurations Not applicable.

Attributes See Table 3-68 on page 3-76.

Table 3-69 shows the bit assignments.

0x38

CNTV_TVAL RW

0x0000_0000

32 Virtual timer value.

See CNTV_TVAL on page 3-84.

0x3C

CNTV_CTL RW

0x0000_0000

32 Virtual timer control register.

See CNTV_CTL on page 3-84.

0xFDF-0x40

--- -Reserved.

Do not write to or read from these registers.

0xFE0

PID0 RO

0x0000_009B

32 System timer Peripheral Identification register 0.

See PID0 on page 3-85.

0xFE4

PID1 RO

0x0000_0010

32 System timer Peripheral Identification register 1.

See PID1 on page 3-86.

0xFE8

PID2 RO

0x0000_0004

32 System timer Peripheral Identification register 2.

See PID2 on page 3-86.

0xFEC

PID3 RO

0x0000_0000

32 System timer Peripheral Identification register 3.

See PID3 on page 3-87.

0xFF0

COMPID0 RO

0x0000_000D

32 System timer Component Identification register 0.

See COMPID0 on page 3-87.

0xFF4

COMPID1 RO

0x0000_00F0

32 System timer Component Identification register 1.

See COMPID1 on page 3-88.

0xFF8

COMPID2 RO

0x0000_0005

32 System timer Component Identification register 2.

See COMPID2 on page 3-88.

0xFFC

COMPID3 RO

0x0000_00B1

32 System timer Component Identification register 3.

See COMPID3 on page 3-89.

Table 3-68 System timer control register summary (continued)

Offset Name Type Test chip reset Width Description

Table 3-69 System timer CNTLPCT Register bit assignments

Bits Name Function

[31:0] CNTLPCT Physical count register lower 32 bits

1 2 ... 129 130 131 132 133 134 135 136 137 138 139 ... 177 178

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