OX16PCI952 View Datasheet(PDF) - Oxford Semiconductor

Part Name

Description

MFG CO.

OX16PCI952

Integrated High Performance Dual UARTs, Parallel Port and 5.0v PCI interface

Oxford Semiconductor 

OXFORD SEMICONDUCTOR LTD.

OX16PCI952

6.2 Configuration space

The OX16PCI952 is a dual-function (or single function)

device, where each logical function has its own PCI

configuration space.

All the required fields in the predefined PCI header region

have been implemented. The device dependant region of

the PCI configuration space contains the PCI Power

Management Extended Capability register set.

The format of the configuration space, for both function 0

and function 1, is as shown in Table 4, below.

In general, writes to any registers that are not implemented

are ignored, and all reads from unimplemented registers

return 0.

6.2.1 PCI Configuration Space Register map

Configuration Register Description

31

16

15

0

Device ID

Vendor ID

Status

Command

Class Code

Revision ID

BIST1

Header Type

Reserved

Reserved

Base Address Register 0 (BAR 0)

Function 0 – UART0 in I/O Space

Function 1 – Parallel Port Base Register Set in I/O Space

Base Address Register 1 (BAR 1)

Function 0 – UART1 I/O Space

Function 1 – Parallel Port Extended Register Set in I/O space

Base Address Register 2 (BAR 2)

Local Configuration Registers in IO space, for function 0 and function 1

Base Address Register 3 (BAR 3)

Local Configuration Registers in Memory space, for function 0 and function 1

Base Address Register 4 (BAR 4)

Function 0 – UART0 and UART1 in Memory Space

Function 1 – Not Implemented.

Base Address Register 5 (BAR5)

Not Implemented, for function 0 and function 1

Reserved

Subsystem ID

Subsystem Vendor ID

Reserved

Reserved

Cap_Ptr

Reserved

Reserved

Reserved

Interrupt Pin

Interrupt Line

Predefined PCI Header Region

Device Dependent PCI Region

Power Management Capabilities (PMC)

Reserved

Reserved

Next Ptr

Cap_ID

PMC Control/Status Register (PMCSR)

Table 4: PCI Configuration space (for UART and Parallel Port function)

Offset

Address

00h

04h

08h

0Ch

10h

14h

18h

1Ch

20h

24h

28h

2Ch

30h

34h

38h

3Ch

40h

44h

DS-0028 Jul 05

External-Free Release

Page 16

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