An186 – Cirrus Logic AN186 User Manual
Page 9
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AN186
AN186REV1
9
8.2 Timing Diagrams for the Case of Wakeup from Standby State
A. External OSC(13Mhz) with “CLKEN” on “RUN/CLKEN” pin
Note:
In
, the system assumes that the CLKEN pin enables the external oscillator.
B. External OSC (13 MHz) with “RUN” on “RUN/CLKEN” Pin
Note:
In
Figure 5
, the system assumes that the OSC is permanently enabled.
Internal RUN
Instruction fetches
WAKEUP (input)
OSC
Stable clock
CLKEN (output)
(
62-125us
)
(
125-250ms
)
Figure 4. Timing Diagram, External OSC(13 MHz) with “CLKEN” on ‘”RUN/CLKEN” Pin
RUN (output)
Instruction fetches
WAKEUP (input)
OSC
(
62-125us
)
Figure 5. Timing Diagram, External OSC (13 MHz) with “RUN” on “RUN/CLKEN” Pin
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