參數(shù)資料
型號(hào): TMX320DM647ZUT720
廠商: Texas Instruments, Inc.
英文描述: Digital Media Processor
中文描述: 數(shù)字媒體處理器
文件頁(yè)數(shù): 131/166頁(yè)
文件大?。?/td> 1341K
代理商: TMX320DM647ZUT720
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6.16 Peripheral Component Interconnect (PCI)
6.16.1 PCI Device-Specific Information
TMS320DM647/TMS320DM648
Digital Media Processor
SPRS372–MAY 2007
The DM647/DM648 digital media processors support 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
TMS320DM647/DM648
Peripheral Component Interconnect (PCI) User's Guide
(literature number
SPRUEL4
).
The PCI peripheral on the DM64x device DSP 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.
On the DM64x device, 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 DM64x 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 6-53
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
TMS320DM647/DM648 Peripheral
Component
Interconnect
(PCI)
User's
Guide
TMS320DM647/DM648 Bootloader Application Report
(literature number
SPRAAJ1
).
(literature
number
SPRUEL4
)
and
the
Table 6-53. Default Values for PCI Configuration
Registers
DEFAULT
VALUE
104C B001h
0000 0001h
0000 0000h
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)
0000 0100h
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Peripheral Information and Electrical Specifications
131
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