MSC8144 Freescale Semiconductor, MSC8144 Datasheet - Page 60

• Manufacturer Part Number: MSC8144
• Description: Quad Core Digital Signal Processor
• Manufacturer: Freescale Semiconductor

2.7.11
Table 49 provides the UTOPIA input and output AC timing specifications.
Figure 33 provides the AC test load for the UTOPIA.
Figure 34 shows the UTOPIA timing with external clock.
Figure 35 shows the UTOPIA timing with internal clock.
60
UTOPIA outputs—External clock delay
UTOPIA outputs—External clock High Impedance
UTOPIA inputs—External clock input setup time
UTOPIA inputs—External clock input hold time
Note:
UTOPIA CLK (output)
UTOPIA CLK (input)
Output Signals:
Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal. Timings are
measured at the pin. Although the specifications generally reference the rising edge of the clock, these AC timing diagrams also
apply when the falling edge is the active edge.
Input Signals:
Output Signals:
ATM/UTOPIA Timing
Input Signals:
UTOPIA
UTOPIA
Characteristic
UTOPIA
UTOPIA
Output
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 1
t
UEIVKH
Figure 34. UTOPIA AC Timing (External Clock)
Figure 35. UTOPIA AC Timing (Internal Clock)
Table 49. UTOPIA AC Timing Specifications
t
UIIVKH
Figure 33. UTOPIA AC Test Load
Z
0
= 50 Ω
t
UIKHOX
t
t
UEKHOX
UIIXKH
Symbol
t
t
t
t
t
UEKHOV
UEKHOX
UIKHOV
UEIVKH
UEIXKH
t
UEKHOV
t
UEIXKH
R
L
Min
= 50 Ω
1
1
4
1
V
DD
/2
Max
9
9
Freescale Semiconductor
Unit
ns
ns
ns
ns