PLB PCI Full Bridge (v1.00a)

Table 3: PLB PCI Bridge Parameters-Port Dependencies (Contd)

Generic

Parameter

Affects

Depends

Description

 

 

 

 

 

 

 

 

 

If G61=0, G62 has no meaning. If

 

 

 

 

G61=1, G62 sets the number of devices

 

 

 

 

supported in configuration operations.

G62

C_NUM_IDSEL

G49 and

G61 and

Must be sufficiently large to include the

G63

G63

address bit defined by G63. If G49=1,

 

 

 

 

 

 

G62 restricts the allowed values that are

 

 

 

 

meaningful in the Device Number

 

 

 

 

Register

 

 

 

 

 

 

 

 

 

If G61=0 or G49=1, G63 has no

G63

C_BRIDGE_IDSEL_ADDR

G62

G49, G61

meaning. If G61=1 and G49=0, G63

_BIT

and G62

must be consistent with the setting of

 

 

 

 

 

 

G62

 

 

 

 

 

 

 

IPIF Parameters Group

 

 

 

 

 

 

G64

C_PLB_MID_WIDTH

 

 

 

 

 

 

 

 

G65

C_PLB_NUM_MASTERS

 

 

 

 

 

 

 

 

G66

C_PLB_AWIDTH

 

 

 

 

 

 

 

 

G67

C_PLB_DWIDTH

 

 

 

 

 

 

 

 

G68

C_FAMILY

G50-52

 

If G68 Virtex-4, G50-52 have no

 

meanings.

 

 

 

 

 

 

 

 

 

Supported PCI Bus Commands

The list of commands supported by the LogiCORE PCI interface is provided in Table 4.

Table 4: Supported PCI Bus Commands

 

Command

 

PLB PCI Bridge

 

 

 

 

 

Code

Name

Target

 

Initiator

 

 

 

 

 

0000

Interrupt Acknowledge

No

 

No

 

 

 

 

 

0001

Special Cycle

No

 

No

 

 

 

 

 

0010

I/O Read

No

 

Yes

 

 

 

 

 

0011

I/O Write

No

 

Yes

 

 

 

 

 

0100

Reserved

Ignore

 

Ignore

 

 

 

 

 

0101

Reserved

Ignore

 

Ignore

 

 

 

 

 

0110

Memory Read

Yes

 

Yes

 

 

 

 

 

0111

Memory Write

Yes

 

Yes

 

 

 

 

 

1000

Reserved

Ignore

 

Ignore

 

 

 

 

 

1001

Reserved

Ignore

 

Ignore

 

 

 

 

 

1010

Configuration Read

Yes

 

Optional

 

 

 

 

 

1011

Configuration Write

Yes

 

Optional

 

 

 

 

 

1100

Memory Read Multiple

Yes

 

Yes

 

 

 

 

 

22

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DS508 March 21, 2006

 

 

Product Specification

Page 22
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Xilinx PLB PCI Full Bridge specifications Supported PCI Bus Commands, Command PLB PCI Bridge, Code Name, Initiator