TMPR4937 datasheet(339/552 Pages) TOSHIBA

339 / 552 page

Chapter 10 PCI Controller

10-81

10.4.50 G2P Configuration Address Register(G2PCFGADRS)

0xD1A0

The operation of any access to this register is undefined when the PCI Controller is in the Satellite

mode.

Reserved

BUSNUM

R/W

: Type

0x00

: Initial value

DEVNUM

FNNUM

REGNUM

TYPE

R/W

: Type

0x00

000

0x00

: Initial value

Bit

Mnemonic

Field Name

Description

Read/Write

31:24

Reserved

⎯

23:16

BUSNUM

Bus Number

Bus Number (Default: 0x00)

Indicates the target PCI Bus Number (one of 256).

R/W

15:11

DEVNUM

Device Number

Device Number (Default: 0x00)

This field is used to identify the target physical device number. (This is one

number out of 32 devices. 21 of these 32 devices are used.)

When in the address phase of Type 0 configuration access, AD[31:11] of

the upper 21 address lines are used as the IDSEL signal.

0x00: Use AD [11] as IDSEL.

0x01: Use AD [12] as IDSEL.

0x02: Use AD [13] as IDSEL.

0x13: Use AD [30] as IDSEL.

0x14: Use AD [31] as IDSEL.

0x15 - 0x1F: Reserved

R/W

10:8

FNNUM

Function Number

Function Number (Default: 000)

This field is used to identify the target logic function number (one out of 8).

R/W

7:2

REGNUM

This field is used to identify the DWORD (one out of 64) inside the

Configuration Space of the target function

R/W

1:0

TYPE

Type

Type (Default; 00)

This field is used to identify the address type in the address phase of the

target function configuration cycle.

0x0: Type 0 configuration (Use the AD[31:11] signal as the IDSEL signal.)

0x1: Type 1 configuration (Output all bits unchanged as the address to the

AD[ ] signal.)

R/W

Figure 10.4.48 G2P Configuration Address Register

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