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6.20 Peripheral Component Interconnect (PCI)

6.20.1 PCI Device-Specific Information

TMS320DM6437

Digital Media Processor

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SPRS345D – NOVEMBER 2006 – REVISED JUNE 2008

The DM6437 DMP 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 TMS320DM643x DMP

Peripheral Component Interconnect (PCI) User's Guide (literature number SPRU985).

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 DM6437 device, the pins of the PCI peripheral are multiplexed with the pins of the VPSS, EMIFA,

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

Section 3, Device Configurations.

The DM6437 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 6-97 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 also shown in Table 6-97. 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 TMS320DM643x DMP

Peripheral Component Interconnect (PCI) User's Guide (literature number SPRU985) and the Using the

TMS320DM643x Bootloader Application Report (literature number SPRAAG0).

The PCI peripheral is a master peripheral within the DM6437 DMP.

Table 6-97. 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

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