TMS320DM6437
Digital Media Processor
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SPRS345B–NOVEMBER 2006–REVISED MARCH 2007
6.20 Peripheral Component Interconnect (PCI)
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).
6.20.1 PCI Device-Specific Information
The PCI peripheral on the DM6437 DMP 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 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. 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
REGISTER
DEFAULT VALUE (HEX)
104C
Vendor ID
Device ID
B001
11 8000
01
Class Code
Revision ID
System Vendor ID
Subsystem ID
Max Latency
Min Grant
0000
0000
00
00
Interrupt Pin
Interrupt Line
00
00
286
Peripheral Information and Electrical Specifications
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