TMS320C6452_13 Datasheet, PDF (138/181 Pages) Texas Instruments – TMS320C6452 Digital Signal Processor

TMS320C6452
SPRS371F – OCTOBER 2007 – REVISED APRIL 2012
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6.15 Peripheral Component Interconnect (PCI)
The device supports connections to a PCI backplane via the integrated PCI master/slave bus interface.
The PCI port interfaces to DSP internal resources via the data switched central resource. .
For more detailed information on the PCI port peripheral module, see the TMS320C6452 Peripheral
Component Interconnect (PCI) User's Guide (literature number SPRUF86).
6.15.1 PCI Device-Specific Information
The PCI peripheral conforms to the PCI Local Bus Specification (version 2.3). The PCI peripheral can act
both as a PCI bus master and as a target. It supports PCI bus operation of speeds up to 66 MHz and uses
a 32-bit data/address bus.
The pins of the PCI peripheral are multiplexed with the pins of the HPI, and GPIO peripherals. PCI
functionality for these pins is controlled (enabled/disabled) by the UHPIEN pin (H2). The maximum speed
of the PCI, 33 MHz or 66 MHz, is controlled through the PCI66 pin (G5). For more detailed information on
the peripheral control, see Section 3.
The device provides an initialization mechanism through which the default values for some of the PCI
configuration registers can be read from an I2C EEPROM. Table 6-59 shows the registers which can be
initialized through the PCI auto-initialization. Also shown is the default value of these registers when PCI
auto-initialization is not used. PCI auto-initialization is enabled by selecting PCI boot with auto-
initialization. For more information on this feature, see the TMS320C6452 Peripheral Component
Interconnect (PCI) User's Guide (literature number SPRUF86).
Table 6-59. Default Values for PCI Configuration
Registers
REGISTER
Vendor ID/Device ID Register (PCIVENDEV)
Class Code/Revision ID Register (PCICLREV)
Subsystem Vendor ID/Subsystem ID Register
(PCISUBID)
Max Latency/Min Grant/Interrupt Pin/Interrupt Line
Register (PCILGINT)
DEFAULT
VALUE
104C B003h
0000 0001h
0000 0000h
0000 0100h
138 Peripheral Information and Electrical Specifications
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