STFPC311 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

STFPC311

Front panel controller/driver with standby power management

STMicroelectronics 

STFPC311

3 Initialization

3.6.3

Watchdog timer operation during standby

● When a hot-key signal is detected either from the front panel or remote control during

standby, the STBY de-asserts.

● The de-assertion of the STBY triggers the watchdog timer.

● The timer value is the programmed value that is set by the user (1s-15s). If the user did not

change the value before entering standby, then it remains 10s.

● Also note: that The watchdog timer is off when the STFPC311 is in the standby mode to

save power.

Figure 5. Standby condition

3 a ) S ta n d b y C o n d itio n (N o rm a l b e h a vio r )

Hot key command from IR

or Key pad for wake up

W DG timer triggers

STBY

READY

MUTE

R E A D Y a sse rts w ith in p ro g ra m m e d tim e r va lu e (1 s-1 5 s)

3b ) S ta n d b y C o n d itio n ( A b n o rm a l b e h a vio r, p ro c e s s o r is n o t re s p o n d in g)

H ot key com m and from IR W DG timer

or Key pad for wake up

triggers

Signals STBY after

W DG count is over

STBY

READY

MUTE

READY continues to remain low

The watchdog timer is triggered by a de-assertion of the STBY signal or by the internal

Power-on Reset signal. It is not affected by the STB pin.

11/39

Share Link: