ADSP-BF512 View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADSP-BF512' PDF : 68 Pages View PDF
ADSP-BF512/BF512F, BF514/BF514F, BF516/BF516F, BF518/BF518F
Serial Ports
Table 33 through Table 36 on Page 40 and Figure 21 on Page 38
through Figure 24 on Page 40 describe serial port operations.
Table 33. Serial Ports—External Clock
VDDEXT
1.8V Nominal
Parameter
Min
Max
Timing Requirements
tSFSE1
TFSx/RFSx Setup Before TSCLKx/RSCLKx
3
tHFSE1
TFSx/RFSx Hold After TSCLKx/RSCLKx
3
tSDRE1
Receive Data Setup Before RSCLKx
3
tHDRE1
Receive Data Hold After RSCLKx
3.5
tSCLKEW
TSCLKx/RSCLKx Width
7
tSCLKE
tSUDTE2
tSUDRE2
TSCLKx/RSCLKx Period
Start-Up Delay From SPORT Enable To First External TFSx
Start-Up Delay From SPORT Enable To First External RFSx
2 × tSCLK
4 × tSCLKE
4 × tSCLKE
Switching Characteristics
tDFSE3
TFSx/RFSx Delay After TSCLKx/RSCLKx (Internally Generated
10
TFSx/RFSx)
tHOFSE3
TFSx/RFSx Hold After TSCLKx/RSCLKx (Internally Generated 0
TFSx/RFSx)
tDDTE3
tHDTE3
Transmit Data Delay After TSCLKx
Transmit Data Hold After TSCLKx
10
0
1 Referenced to sample edge.
2 Verified in design but untested.
3 Referenced to drive edge.
Table 34. Serial Ports—Internal Clock
Parameter
Min
Timing Requirements
tSFSI1
TFSx/RFSx Setup Before TSCLKx/RSCLKx
11
tHFSI1
TFSx/RFSx Hold After TSCLKx/RSCLKx
–1.5
tSDRI1
Receive Data Setup Before RSCLKx
11
tHDRI1
Receive Data Hold After RSCLKx
–1.5
Switching Characteristics
tDFSI2
TFSx/RFSx Delay After TSCLKx/RSCLKx (Internally Generated
TFSx/RFSx)
tHOFSI2
TFSx/RFSx Hold After TSCLKx/RSCLKx (Internally Generated −2
TFSx/RFSx)
tDDTI2
Transmit Data Delay After TSCLKx
tHDTI2
Transmit Data Hold After TSCLKx
−1.8
tSCLKIW
TSCLKx/RSCLKx Width
10
1 Referenced to sample edge.
2 Referenced to drive edge.
VDDEXT
1.8V Nominal
Max
3
3
VDDEXT
2.5 V/3.3V Nominal
Min
Max
Unit
3
ns
3
ns
3
ns
3
ns
4.5
ns
2 × tSCLK
ns
4 × tSCLKE
ns
4 × tSCLKE
ns
10
ns
0
ns
10
ns
0
ns
VDDEXT
2.5 V/3.3V Nominal
Min
Max
Unit
9.6
ns
–1.5
ns
9.6
ns
–1.5
ns
3
ns
−1
ns
3
ns
−1.5
ns
8
ns
Rev. B | Page 37 of 68 | January 2011
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