ADLINK cPCI-7300 - Manual (Page 24)

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• Registers
3
Registers
In this chapter, the registers’ format of the cPCI/PCI-7300A is described.
Please note that the registers’ map of the PCI-7300A Rev.B is different from
the PCI-7300A Rev.A
This information is quite useful for the programmers who wish to handle the
card by low-level programming. In addition, users can realize how to use
software driver to manipulate this card after understanding the registers'
structure of the cPCI/PCI-7300A
The cPCI/PCI-7300A functions as a 32-bit PCI master device on the PCI bus.
There are three types of registers on the cPCI/PCI-7300A: PCI Configuration
Registers (PCR), Local Configuration Registers (LCR) and cPCI/PCI-7300A’s
registers.
The PCR, which compliant to the PCI-bus specifications, is initialized and
controlled by the plug & play (PnP) PCI BIOS. User‘s can study the PCI BIOS
specification to understand the operation of the PCR. Please contact with
PCISIG to acquire the specifications of the PCI interface.
The LCR is specified by the PCI bus controller PLX PCI-9080, which is
provided by PLX technology Inc. (www.plxtech.com) . It is not necessary for
users to understand the details of the LCR if you use the software library. The
base address of the LCR is assigned by the PCI PnP BIOS. The assigned
address is located at offset 14h of PCR.