AS3722 datasheet(142/199 Pages) AMSOSRAM

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ams Datasheet

Page 141

[v1-01] 2015-Sep-07

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AS3722 − Register Description

Figure 149:

pwm_control_h

Figure 150:

Watchdog_timer

Figure 151:

WatchdogSoftwareSignal

Addr:42h

pwm_control_h

Bit

Bit Name

Default

Access

Bit Description

7:0

pwm_h_time

This bit defines the high time of the pwm generator

in 1MHz units

0 : pwm_div * 1us

1 : pwm_div * 2us

2 : pwm_div * 3us

.. : ..

254 : pwm_div * 255us

255 : pwm_div * 256us

Addr:46h

Watchdog_timer

Bit

Bit Name

Default

Access

Bit Description

6:0

wtdg_timer

Watchdog timer Write watchdog timer, Read actual

countdown starting from (LSB=1s, range: 1 - 128s)

writing of wtdg_sw_sig or risigng edge of GPIO (if

GPIOx_iosf=9) resets the watchdog to wtdg_timer

0 : 1 second

1 : 2 seconds

2 : 3 seconds

3 : 4 seconds

.. : ..

126 : 127 seconds

127 : 128 seconds

Addr:48h

WatchdogSoftwareSignal

Bit

Bit Name

Default

Access

Bit Description

7:6

pwm_div

This bit defines the divider ratio of the prescaler for

the PWM generator

0 : Divide by 1

1 : Divide by 16

2 : Divide by 256

3 : Divide by 16384

wtdg_sw_sig

PUSH

Trigger input by the serial interface, if gpioX_iosf<>9

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