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MPC8540 Datasheet(PDF) 626 Page - Freescale Semiconductor, Inc

Part # MPC8540
Description  MPC8540 PowerQUICC III??Integrated Host Processor Reference Manual
PDF  1302 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8540 Datasheet(HTML) 626 Page - Freescale Semiconductor, Inc

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MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1
13-122
Freescale Semiconductor
Local Bus Controller
HRDY signals can be bussed for certain DSPs (such as, TMS320VC5510); for others (such as,
TMS320VC5509), an external multiplexer must be used to decide which HRDY signal is routed
to the local bus. This multiplexer can be controlled by the respective chip selects.
For a larger number of DSPs, this scheme must be extended with external logic, which uses
additional address signals to generate multiple DSP HCSs for one local bus chip select and to
multiplex the HINT and HRDY signals. The flexibility of the UPM allows for additional delay for
that external logic.



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