ADSP-BF537BBCZ-5AV View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADSP-BF537BBCZ-5AV' PDF : 68 Pages View PDF
ADSP-BF534/ADSP-BF536/ADSP-BF537
Serial Port Timing
Table 30 through Table 33 on Page 41 and Figure 20 on Page 39
through Figure 23 on Page 41 describe serial port operations.
Table 30. Serial Ports—External Clock
Parameter
Min
Max
Unit
Timing Requirements
tSFSE
TFSx/RFSx Setup Before TSCLKx/RSCLKx1
tHFSE
TFSx/RFSx Hold After TSCLKx/RSCLKx1
tSDRE
Receive Data Setup Before RSCLKx1
tHDRE
Receive Data Hold After RSCLKx1
tSCLKEW
TSCLKx/RSCLKx Width
tSCLKE
tSUDTE
tSUDRE
TSCLKx/RSCLKx Period
Start-Up Delay From SPORT Enable To First External TFSx2
Start-Up Delay From SPORT Enable To First External RFSx2
Switching Characteristics
tDFSE
tHOFSE
tDDTE
tHDTE
TFSx/RFSx Delay After TSCLKx/RSCLK (Internally Generated TFSx/RFSx)3
TFSx/RFSx Hold After TSCLKx/RSCLK (Internally Generated TFSx/RFSx)2
Transmit Data Delay After TSCLKx2
Transmit Data Hold After TSCLKx2
3.0
ns
3.0
ns
3.0
ns
3.0
ns
4.5
ns
15.0
ns
4.0 × tSCLKE
ns
4.0 × tSCLKE
ns
10.0
ns
0
ns
10.0
ns
0
ns
1 Referenced to sample edge.
2 Verified in design but untested. After being enabled, the serial port requires external clock pulses—before the first external frame sync edge—to initialize the serial port.
3 Referenced to drive edge.
Table 31. Serial Ports—Internal Clock
Parameter
2.25 V VDDEXT < 2.70 V
or
0.80 V VDDINT < 0.95 V1
Min
Max
Timing Requirements
tSFSI
TFSx/RFSx Setup Before TSCLKx/RSCLKx4
8.5
tHFSI
TFSx/RFSx Hold After TSCLKx/RSCLKx4
–1.5
tSDRI
Receive Data Setup Before RSCLKx4
8.5
tHDRI
Receive Data Hold After RSCLKx4
–1.5
Switching Characteristics
tDFSI
TFSx/RFSx Delay After TSCLKx/RSCLKx (Internally Generated
3.0
TFSx/RFSx)5
tHOFSI
TFSx/RFSx Hold After TSCLKx/RSCLKx (Internally Generated 1.0
TFSx/RFSx)5
tDDTI
tHDTI
tSCLKIW
Transmit Data Delay After TSCLKx5
Transmit Data Hold After TSCLKx5
TSCLKx/RSCLKx Width
3.0
1.0
4.5
1 Applies to all nonautomotive-grade devices when operated within either of these voltage ranges.
2 Applies to all nonautomotive-grade devices when operated within these voltage ranges.
3 All automotive-grade devices are within these specifications.
4 Referenced to sample edge.
5 Referenced to drive edge.
2.70 V VDDEXT 3.60 V
and
0.95 V VDDINT 1.43 V2, 3
Min
Max
8.0
–1.5
8.0
–1.5
3.0
1.0
3.0
1.0
4.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Rev. J | Page 38 of 68 | February 2014
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