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Figure 7 – Texas Instruments TMS320C6457 User Manual

Page 18

background image

Data 2

Data 1

HCS

HAS

HSTRB

HR/W

HCNTL[1:0]

HD[15:0]

HRDY

A

HHWIL

Internal

HPI latches

control information

Host latches

data

HPI latches

control information

Host latches

data

HPI Operation

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Figure 7. 16-Bit Multiplexed Mode Host Read Cycle Using HAS

A

Depending on the type of write operation (HPID without autoincrementing, HPIA, HPIC, or HPID with
autoincrementing) and the state of the FIFO, transitions on HRDY may or may not occur. For more information, see

Section 3.9

.

18

Host Port Interface (HPI)

SPRUGK7A – March 2009 – Revised July 2010

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