Verdin Carrier Board Design Guide
Preliminary
– Subject to Change
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Table 38: Available Verdin power states
The module automatically transitions to the running mode when the VCC main power rail is
applied to the module. In other words, all Verdin modules are ramping up the power rails and
boot the system when the VCC is applied.
The CTRL_PWR_BTN_MICO# allows implementing a power button behavior which is like the ones
used on regular personal computers and smart phones. Short pressing the power button is
powering up the system from the “Module OFF” state or wakes the system from the sleep state. If
the module is running, short pressing the power button will generate a software interrupt.
Depending on the settings in the operating system, this will start a software shut down or opens a
menu which lets the customer decide what to do. Pressing the power button longer than 5 seconds
will shut the system down immediately (without any software interaction).
Figure 47: Module Power States and Transitions
Module OFF
PWR_EN_MOCI =0
SLEEP_MOCI# =0
RESET_MOCI# =0
FORCE_OFF_MOCI# =0
Running
PWR_EN_MOCI =1
SLEEP_MOCI# =1
RESET_MOCI# =1
FORCE_OFF_MOCI# =1
Sleep
PWR_EN_MOCI =1
SLEEP_MOCI# =0
RESET_MOCI# =1
FORCE_OFF_MOCI# =1
Reset
PWR_EN_MOCI =0**
SLEEP_MOCI# =0**
RESET_MOCI# =0
FORCE_OFF_MOCI# =1
No VCC
PWR_EN_MOCI =0
SLEEP_MOCI# =0
RESET_MOCI# =x
FORCE_OFF_MOCI# =x
Add VCC
VCC > 3.135V
Remove VCC
VCC < 0.5V
Run to Reset
Software initiated Reset
or
RESET_MICO# = 0
Reset to Run
RESET_MICO# = 1
Run to Sleep
Software initiated Sleep
Sleep to Run
WAKE1_MICO# = 0
or
PWR_BTN_MICO# = 0 (<5s)
Kill VCC
FORCE_OFF_MOCI#
implemented on carrier board
Force Off
PWR_BTN_MICO# = 0 (>5s)
Shutdown
Software initiated power down*
OFF to Run
PWR_BTN_MICO# = 0 (<5s)
From any State
* Can also be initiated by
PWR_BTN_MICO# = 0 (<5s)
** Depends on the Module