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TMS320C6727,TMS320C6726,TMS320C6722
Floating-PointDigitalSignalProcessors
SPRS268E–MAY2005–REVISEDJANUARY2007
Table4-23.McASPSwitchingCharacteristics
(1)
NO.PARAMETERMINMAXUNIT
Cycletime,AHCLKRinternal,AHCLKRoutput20
Cycletime,AHCLKRexternal,AHCLKRoutput20
9t
c(AHCKRX)
ns
Cycletime,AHCLKXinternal,AHCLKXoutput20
Cycletime,AHCLKXexternal,AHCLKXoutput20
Pulseduration,AHCLKRinternal,AHCLKRoutput(AHR/2)–2.5
(2)
Pulseduration,AHCLKRexternal,AHCLKRoutput(AHR/2)–2.5
(2)
10t
w(AHCKRX)
ns
Pulseduration,AHCLKXinternal,AHCLKXoutput(AHX/2)–2.5
(3)
Pulseduration,AHCLKXexternal,AHCLKXoutput(AHX/2)–2.5
(3)
Cycletime,ACLKRinternal,ACLKRoutputgreaterof2Por20ns
(4)
Cycletime,ACLKRexternal,ACLKRoutputgreaterof2Por20ns
(4)
11t
c(ACKRX)
ns
Cycletime,ACLKXinternal,ACLKXoutputgreaterof2Por20ns
(4)
Cycletime,ACLKXexternal,ACLKXoutputgreaterof2Por20ns
(4)
Pulseduration,ACLKRinternal,ACLKRoutput(AR/2)–2.5
(5)
Pulseduration,ACLKRexternal,ACLKRoutput(AR/2)–2.5
(5)
12t
w(ACKRX)
ns
Pulseduration,ACLKXinternal,ACLKXoutput(AX/2)–2.5
(6)
Pulseduration,ACLKXexternal,ACLKXoutput(AX/2)–2.5
(6)
Delaytime,ACLKRinternal,AFSRoutput5
Delaytime,ACLKXinternal,AFSXoutput5
Delaytime,ACLKRexternalinput,AFSRoutput10
Delaytime,ACLKXexternalinput,AFSXoutput10
Delaytime,ACLKRexternaloutput,AFSRoutput10
Delaytime,ACLKXexternaloutput,AFSXoutput10
13t
d(ACKRX-FRX)
ns
Delaytime,ACLKRinternal,AFSRoutput–1
Delaytime,ACLKXinternal,AFSXoutput–1
Delaytime,ACLKRexternalinput,AFSRoutput0
Delaytime,ACLKXexternalinput,AFSXoutput0
Delaytime,ACLKRexternaloutput,AFSRoutput0
Delaytime,ACLKXexternaloutput,AFSXoutput0
Delaytime,ACLKXinternal,AXRnoutput–15
14t
d(ACLKX-AXRV)
Delaytime,ACLKXexternalinput,AXRnoutput010ns
Delaytime,ACLKXexternaloutput,AXRnoutput010
Disabletime,ACLKXinternal,AXRnoutput–310
15t
dis(ACKX-AXRHZ)
Disabletime,ACLKXexternalinput,AXRnoutput–310ns
Disabletime,ACLKXexternaloutput,AXRnoutput–310
(1)ACLKXinternal–ACLKXCTL.CLKXM=1,PDIR.ACLKX=1
ACLKXexternalinput–ACLKXCTL.CLKXM=0,PDIR.ACLKX=0
ACLKXexternaloutput–ACLKXCTL.CLKXM=0,PDIR.ACLKX=1
ACLKRinternal–ACLKRCTL.CLKRM=1,PDIR.ACLKR=1
ACLKRexternalinput–ACLKRCTL.CLKRM=0,PDIR.ACLKR=0
ACLKRexternaloutput–ACLKRCTL.CLKRM=0,PDIR.ACLKR=1
(2)AHR-Cycletime,AHCLKR.
(3)AHX-Cycletime,AHCLKX.
(4)P=SYSCLK2period
(5)AR-ACLKRperiod.
(6)AX-ACLKXperiod.
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