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HRDY
(B)
(output)
5
11
9
17
18
34
HAS
(input)
HR/W (input)
HSTROBE
(A)
(input)
HCS (input)
35
36
38
HD[31:0] (input)
HCNTL[1:0]
(input)
10
12
13
37
SM320C6455-EP
FIXED-POINTDIGITALSIGNALPROCESSOR
SPRS462B–SEPTEMBER2007–REVISEDJANUARY2008
A.HSTROBEreferstothefollowinglogicaloperationonHCS,HDS1,andHDS2:[NOT(HDS1XORHDS2)]ORHCS.
B.Dependingonthetypeofwriteorreadoperation(HPIDwithoutauto-incrementing;HPIA,HPIC,orHPIDwith
auto-incrementing)andthestateoftheFIFO,transitionsonHRDYmayormaynotoccur.Formoredetailed
informationontheHPIperipheral,seetheTMS320C645xDSPHostPortInterface(HPI)User'sGuide(literature
numberSPRU969).
C.Thetimingt
w(HSTBH)
,HSTROBEhighpulseduration,mustbemetbetweenconsecutiveHPIaccessesinHPI32
mode.
Figure7-51.HPI32WriteTiming(HASUsed)
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