ADLINK PCI-7300A - Manual (Page 29)

Registers 17
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 initial-
ized 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 specifica-
tions 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.