w83l950d Winbond Electronics Corp America, w83l950d Datasheet - Page 69

• Manufacturer Part Number: w83l950d
• Description: Peripheral Personal Computer Keyboard Controller
• Manufacturer: Winbond Electronics Corp America

14.6 PWM1L register (PWM1L)
15. AUXILIARY PWM CHANNLE
The PWM2 and 3 is auxiliary PWM channel. These two PWM channels are 16 bits operation .The
minimum resolution depend on the input CLK frequency. The frequency may be 8Mhz, 16Mhz, 32Mhz,
i.e., 125ns, 62.5ns, 31.25ns.
Note:
The PWM 2,3 enable bit are located in Port Control Register 3(PCTL3).
15.1 AUXILIARY PWM Controller Register (APWMCON)
SFR address
Default value
Advance address 0x1C
Bit 1-0: PWM channel 2 input frequency select
Bit 2: Reserved.
Bit 3: PWM channel 2 CLOCK SOURCE SELECT
0: PWM channel 2 clock source is PLL and bit 1-0 is effective
1: PWM channel 2 clock source is the same as 8051 CLOCK.
(Note: This selection is disabled. Set to 0 by default.)
Bit 5-4: PWM channel 3 input frequency select
Bit 6: Reserved.
Bit 7: PWM channel 3 CLOCK SOURCE SELECT
0: PWM channel 3 clock source is PLL and bit 5-4 is effective
1: PWM channel 3 clock source is the same as 8051 CLOCK.
(Note: This selection is disabled. Set to 0 by default.)
00: 8M.
01: 16M
10: reserve
11: 32M
00: 8M.
01: 16M
10: Reserved.
11: 32M
0xD7
x0xxxxxxb
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W83L950D