Datasheet

Rev. D | Page 56 of 88 | July 2013
ADSP-BF522/ADSP-BF523/ADSP-BF524/ADSP-BF525/ADSP-BF526/ADSP-BF527
Table 46. Serial Ports—Enable and Three-State
ADSP-BF522/ADSP-BF524/ADSP-BF526 ADSP-BF523/ADSP-BF525/ADSP-BF527
Parameter
V
DDEXT
1.8V Nominal
V
DDEXT
2.5 V or 3.3V Nominal
V
DDEXT
1.8V Nominal
V
DDEXT
2.5 V or 3.3V Nominal
Min Max Min Max Min Max Min Max Unit
Switching Characteristics
t
DTENE
Data Enable Delay from
External TSCLKx
1
0.0 0.0 0.0 0.0 ns
t
DDTTE
Data Disable Delay from
External TSCLKx
1
t
SCLK
+1 t
SCLK
+1 t
SCLK
+1 t
SCLK
+1 ns
t
DTENI
Data Enable Delay from
Internal TSCLKx
1
–2.0 –2.0 –2.0 –2.0 ns
t
DDTTI
Data Disable Delay from
Internal TSCLKx
1
t
SCLK
+1 t
SCLK
+1 t
SCLK
+1 t
SCLK
+1 ns
1
Referenced to drive edge.
Figure 26. Serial Ports — Enable and Three-State
TSCLKx
DTx
DRIVE EDGE
t
DDTTE/I
t
DTENE/I
DRIVE EDGE