8.5 Expansion Bus Host Port Operation - Texas Instruments TMS320C6201 Reference Manual

Tms320c6000 series peripherals

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Expansion Bus Host Port Operation

8.5 Expansion Bus Host Port Operation

Figure 8–13. Expansion Bus Host Port Interface Block Diagram

The expansion bus host port has two modes, which enable interfaces to exter-

nal processors, PCI bridge chips, or other external peripherals. These are the

synchronous host port mode and the asynchronous host port mode. The syn-

chronous host port mode can interface with minimum glue to PCI bridge chips

and many common microprocessors. The asynchronous host port mode en-

ables interfacing to genuine asynchronous devices.

The expansion bus host port block diagram is shown is Figure 8–13.

Using pull-up/down resistors on the data bus during reset sets the host port

operational mode, the DSP bootmode, and endianness.

Expansion bus

(XBGC, XBHC)

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