ADLINK PCIe-7300A - Manual (Page 29)

Registers 19
3 Registers
In this chapter, the registers’ format of the cPCI/PCI/PCIe-7300A
is described.
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/PCIe-7300A
The cPCI/PCI/PCIe-7300A functions as a 32-bit PCI master
device on the PCI bus. There are three types of registers on the
cPCI/PCI/PCIe-7300A: PCI Configuration Registers (PCR), Local
Configuration Registers (LCR) and cPCI/PCI/PCIe-7300A’s regis-
ters.
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.