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TMS320C6424

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SPRS347D – MARCH 2007 – REVISED DECEMBER 2009

6.18 Peripheral Component Interconnect (PCI)

The C6424 DSP supports connections to PCI-compliant devices via the integrated PCI master/slave bus

interface. The PCI port interfaces to DSP internal resources via the data switched central resource. The

data switched central resource is described in more detail in Section 4, System Interconnect.

For more detailed information on the PCI port peripheral module, see the TMS320C642x DSP Peripheral

Component Interconnect (PCI) User's Guide (literature number SPRUEN3).

6.18.1 PCI Device-Specific Information

The PCI peripheral on the C6424 DSP conforms to the PCI Local Bus Specification Revision 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 33 MHz and uses a 32-bit data/address bus.

On the C6424 device, the pins of the PCI peripheral are multiplexed with the pins of the EMIFA, GPIO,

HPI, VLYNQ, and EMAC peripherals. For more detailed information on how to select PCI, see Section 3,

Device Configurations.

The C6424 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 6-74 shows the registers which can

be initialized through the PCI auto-initialization. The default value of these registers when PCI

auto-initialization is not used is shown in Table 6-74. PCI auto-initialization is enabled by selecting PCI

boot with auto-initialization. For information on how to select PCI boot with auto-initialization, see

Section 3.4.1, Boot Modes. For more information on PCI auto-initialization, see the TMS320C642x DSP

Peripheral Component Interconnect (PCI) User's Guide (literature number SPRUEN3) and the Using the

TMS320C42x Bootloader Application Report (literature number SPRAAK5).

The PCI peripheral is a master peripheral within the C6424 DSP.

Table 6-74. Default Values for PCI Configuration Registers

DEFAULT VALUE (HEX)

Vendor ID

104C

Device ID

B001

Class Code

11 8000

Revision ID

System Vendor ID

0000

Subsystem ID

0000

Max Latency

Min Grant

Interrupt Pin

Interrupt Line

Peripheral Information and Electrical Specifications

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