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HCS
HAS
HCNTL[1:0]
HR/W
HHWIL
HSTROBE
(A)
HD[15:0]
HRDY
(B)
5
34
17
18
13
10
12
9
37
12
12
11
11
11
17
18
14
11
11
11
37
10
9
13
12
12
12
5
34
38
35
36
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).
Figure7-47.HPI16WriteTiming(HASUsed)
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