Revision 1.27 - August 22, 2007
PPC405EZ – PowerPC 405EZ Embedded Processor
Preliminary Data Sheet
Table 14. Peripheral Interface I/O Clock Timings
Clock
EMCTxClk frequency
EMCTxClk high time
EMCTxClk low time
EMCRxClk frequency
EMCRxClk high time
EMCRxClk low time
TmrClk
Min
Max
25
Units
MHz
ns
2.5
35% of nominal
–
35% of nominal
–
ns
2.5
25
MHz
ns
35% of nominal
–
35% of nominal
–
ns
na
33
100
83
MHz
MHz
MHz
MHz
MHz
PerClk
TCK
na
20
USB1FClk (48MHz ± 0.05%)
PWM_TBA
47.976
na
48.024
83
Figure 4. Input Setup and Hold Timing Waveform
System Clock
1.5V
T
T
IS
IH
MIN
MIN
Inputs
1.5V
Valid
Figure 5. Output Delay and Float Timing Waveform
System Clock
1.5V
1.5V
T
T
OH
OV
MAX
MIN
Outputs
Valid
MAX
T
OF
MIN
1.5V
Outputs
AMCC Proprietary
47