W83L951DG Datasheet, PDF (74/112 Pages) Winbond – Mobile Keyboard and Embedded Controller

W83L951DG/W83L951FG
The unit is 1us in PWM1/PWM2.
PWM 3/PWM4 is {PWM Period Level Register} > {PWM High Level Register} >0, then
Period Width: {PWM Period Level Register} + 4units.
Low Width : {PWM Period Level Register} － {PWM High Level Register} ＋ 1unit.
High Width : {PWM High Level Register} ＋ 3units.
The unit is 1/F in PWM 3/PWM4. And F is defined in PWM Control Register.
PWM 1/PWM2/PWM3/PWM4 is default low.
6.9.1 Register Description
6.9.1.1 PWM Control Register (PWMCON) (Default Value: 0000_0000)
Bit 7: Reserved
Bit 6~4: PWM 4 Frequency Select
Input clock=24MHz :
111: Reserved, 110: 375 KHz, 101: 750 KHz, 100: 1.5 MHz.
011: 3 MHz, 010: 6 MHz, 001: 12 MHz, 000: 24 MHz.
Input clock=12MHz :
111: Reserved, 110: Reserved, 101: 375 KHz, 100: 750KHz.
011: 1.5 MHz, 010: 3 MHz, 001: 6 MHz, 000: 12 MHz.
Bit 3: Reserved
Bit 2~0: PWM 3 Frequency Select
Input clock=24MHz :
111: Reserved, 110: 375 KHz, 101: 750 KHz, 100: 1.5 MHz.
011: 3 MHz, 010: 6 MHz, 001: 12 MHz, 000: 24 MHz.
Input clock=12MHz :
111: Reserved, 110: Reserved, 101: 375 KHz, 100: 750KHz.
011: 1.5 MHz, 010: 3 MHz, 001: 6 MHz, 000: 12 MHz.
6.9.1.2 PWM 1 Period Register (PWM1P) (Default Value: 0000_0000)
Use the 8-bit register to control width of a full period output.
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