MPC8280 datasheet(369/1386 Pages) FREESCALE

369 / 1386 page

PCI Bridge

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

9-61

9.11.2.24 PCI Hot Swap Register Block

The PCI Hot Swap register block, shown in Figure 9-56, is a set of registers in a capability structure. It

contains the Hot Swap control status register itself, as well as other fields as required by the capabilities

list format.

Figure 9-56. Hot Swap Register Block

Table 9-43 describes the Hot Swap register block fields.

9.11.2.25 PCI Hot Swap Control Status Register

Figure 9-57 and Table 9-44 describe the Hot Swap control status register.

Figure 9-57. Hot Swap Control Status Register

Field

—

HS_CSR (See Section 9.11.2.25, “PCI Hot Swap

Control Status Register.”)

Reset

0000_0000_0000_0000

R/W

Addr

0x4A

Field

NXT_PTR

CAP_ID

Reset

0000_0000_0000_0110

R/W

Addr

0x48

Table 9-43. Hot Swap Register Block Field Descriptions

Bits

Name

Description

31–24

—

Reserved. Should be cleared.

23–16

HS_CSR

Hot Swap control status register; see Section 9.11.2.25, “PCI Hot Swap Control

Status Register.”

15–8

NXT_PTR

Next pointer—an offset into the device’s PCI configuration space for the location

of the next item in the capabilities linked list. A value of 0x00 indicates that this is

the last item in the list.

7–0

CAP_ID

CompactPCI ® Hot Swap capability ID (read only).

Field

INS

EXT

—

LOO

—EIM

—

Reset

0000_0000

R/W

Addr

0x4A

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