PCI1520PDVG4 datasheet(63/139 Pages) TI

63 / 139 page

4−2

A bit description table, typically included when a register contains bits of more than one type or purpose, indicates

bit field names, which appear in the signal column; a detailed field description, which appears in the function column;

and field access tags, which appear in the type column of the bit description table. Table 4−2 describes the field

access tags.

Table 4−2. Bit Field Access Tag Descriptions

ACCESS TAG

NAME

MEANING

Read

Field may be read by software.

Write

Field may be written by software to any value.

Set

Field may be set by a write of 1. Writes of 0 have no effect.

Clear

Field may be cleared by a write of 1. Writes of 0 have no effect.

Update

Field may be autonomously updated by the PCI1520.

4.2

Vendor ID Register

This 16-bit register contains a value allocated by the PCI Special Interest Group (SIG) and identifies the manufacturer

of the PCI device. The vendor ID assigned to TI is 104Ch.

Bit

Name

Vendor ID

Type

Default

Vendor ID

Offset:

00h (functions 0, 1)

Type:

Read-only

Default:

104Ch

4.3

Device ID Register

This 16-bit register contains a value assigned to the PCI1520 by TI. The device identification for the PCI1520 is

AC55h.

Bit

Name

Device ID

Type

Default

Device ID

Offset:

02h (functions 0, 1)

Type:

Read-only

Default:

AC55h

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