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SC806Hardware User ManualPage32 of 70
Figure 9Shutdown Time Slot
3.3.3
Sleep/wakeup
During standby, set the KEY_ON/OFF signal low (100ms) and the system will go to sleep. The system supports
automatic sleep. The time from standby to sleep can be configured via software.
In sleep mode, the low KEY_ON/OFF signal can wake up the system.
3.3.4
Reset
KEY_RST_N is the reset output of the module PMIC. When the system crashes or other abnormalities occur, the
low KEY_RST_N signal is greater than 300ms, and the system will be forced to restart.
3.4
USBInterface
The SC806 supports one USB 2.0 interface, and supports two speed modes, full-speed (12Mbps) and high-speed
mode (480Mbps). USB supports OTG function and HUB expansion interface.
USB pin definition is shown in the following table:
Table10USB pin definition
Pin No.
Pin Name
I/O
Description
Note
141,142
VBUS_5V
PI
Device mode, 5V input
13
USB_DM
I/O
USB signal negative
14
USB_DP
I/O
USB signal positive
16
USB_ID
AI
USB OTG detection pin
The USB_VBUS power is a USB power or an adapter. It can be used as a USB plug-in detection and charge the