ADSP-BF539F View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADSP-BF539F' PDF : 68 Pages View PDF
ADSP-BF539/ADSP-BF539F
Serial Ports Timing
Table 25 through Table 28 on Page 45 and Figure 23 on Page 45
through Figure 25 on Page 47 describe Serial Port operations.
Table 25. Serial Ports—External Clock
Parameter
Timing Requirements
tSFSE
TFS/RFS Setup Before TSCLK/RSCLK (externally generated TFS/RFS)1
tHFSE
TFS/RFS Hold After TSCLK/RSCLK (externally generated TFS/RFS)1
tSDRE
Receive Data Setup Before RSCLK1
tHDRE
Receive Data Hold After RSCLK1
tSCLKEW
TSCLK/RSCLK Width
tSCLKE
TSCLK/RSCLK Period
Switching Characteristics
tDFSE
tHOFSE
tDDTE
tHDTE
TFS/RFS Delay After TSCLK/RSCLK (Internally Generated TFS/RFS)2
TFS/RFS Hold After TSCLK/RSCLK (Internally Generated TFS/RFS)2
Transmit Data Delay After TSCLK2
Transmit Data Hold After TSCLK2
1 Referenced to sample edge.
2 Referenced to drive edge.
Table 26. Serial Ports—Internal Clock
Parameter
Timing Requirements
tSFSI
TFS/RFS Setup Before TSCLK/RSCLK (externally generated TFS/RFS)1
tHFSI
TFS/RFS Hold After TSCLK/RSCLK (externally generated TFS/RFS)1
tSDRI
Receive Data Setup Before RSCLK1
tHDRI
Receive Data Hold After RSCLK1
tSCLKEW
TSCLK/RSCLK Width
tSCLKE
TSCLK/RSCLK Period
Switching Characteristics
tDFSI
tHOFSI
tDDTI
tHDTI
tSCLKIW
TFS/RFS Delay After TSCLK/RSCLK (Internally Generated TFS/RFS)2
TFS/RFS Hold After TSCLK/RSCLK (Internally Generated TFS/RFS)2
Transmit Data Delay After TSCLK2
Transmit Data Hold After TSCLK2
TSCLK/RSCLK Width
1 Referenced to sample edge.
2 Referenced to drive edge.
Table 27. Serial Ports—Enable and Three-State
Parameter
Switching Characteristics
tDTENE
tDDTTE
tDTENI
tDDTTI
Data Enable Delay from External TSCLK1
Data Disable Delay from External TSCLK1
Data Enable Delay from Internal TSCLK1
Data Disable Delay from Internal TSCLK1
1 Referenced to drive edge.
Preliminary Technical Data
Min
Max
Unit
3.0
ns
3.0
ns
3.0
ns
3.0
ns
4.5
ns
15.0
ns
10.0
ns
0.0
ns
10.0
ns
0.0
ns
Min
Max
Unit
8.0
ns
–1.5
ns
8.0
ns
–1.5
ns
4.5
ns
15.0
ns
3.0
ns
–1.0
ns
3.0
ns
–2.0
ns
4.5
ns
Min
Max
Unit
0
ns
10.0
ns
–2.0
ns
3.0
ns
Rev. PrF | Page 44 of 68 | September 2006
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