Specifications

L506 Hardware Design
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3.10 Interactive interface
3.10.1 Pin definition
Table 3-19 list the interface is mainly with the application processor interactive interface, including
query, wake up four types, status indication, flight mode interface.
Table3-19Interactive interface
Pin No.
Signal
I/O type
Descriptions
50
GPIO_2/WAKEUP_IN
DI
Default: GPIO
Optional: Input pin as wake up interrupt
signal to module from host.
52
GPIO_1/WAKEUP_OU
T
Default:GPIO
Optional: Output pin as the module wake up
the AP
49
STATUS
DO
APinquire the module status
54
FLGHTMODE
DI
Pull up to 1.8V made the system enter in
flight mode, at this mode will tune off all
the wireless function
45
GPIO_0
DO
General GPIO module output (used for
keyboard backlighting, etc.)
28
GPIO_3
I/O
GPIO
3.10.2 interactive interface application
L506 provides three shook hands with application processor communication signals. Application
processor can query whether the module boot normal work through STATUS. Through the
WAKEUP_OUT query module is in sleep mode, and sleep in the module, through WAKEUP_IN
wake module. Similarly, when application processor in the sleep state, the L506 modules can through
WAKEUP_OUT wake application processor.
 STATUS：Module sleep instructions, high level indicator to sleep, low level instructions for the
awakened state;
 WAKEUP_IN： The host can lower the signal awakens the module，If, low level has maintained,
module can't sleep.
 WAKEUP_OUT: when L506 need to communicate with the AP, module can be set this pin for low
level to awaken application processor.
 FLGHTMODE：Through the external output high level module into flight mode;