W83L951DG Datasheet, PDF (23/112 Pages) Winbond – Mobile Keyboard and Embedded Controller

W83L951DG/W83L951FG
5.6 GPIO2 Part
This part contains:
General Purpose I/O Function
Default is General Purpose I/O. Change the value of GPIO2 and GPIOD2 register to determine 8
input/output.
Pulse Width Modulator Output
Use Pulse Width Modulator Registers to control 4 Pulse Width Modulator Output.
Keyboard Matrix Column Output
Change the value of chip control 2 register bit 3 (Keyboard Scan Function Enable) to enable {GP0,
GP1, GP20~23} keyboard scan function and GP3 key wakeup interrupt function.
Table 5-7 GPIO2 pin configuration table
SYMBOL PIN I/O
FUNCTION
GP27
PWM3
General Purpose I/O Function
70 I/O_{16tsh Pulse Width Modulator Output}
GP26
PWM2
General Purpose I/O Function
71 I/O_{16tsh Pulse Width Modulator Output}
GP25
PWM1
General Purpose I/O Function
72 I/O_{16tsh Pulse Width Modulator Output}
GP24
PWM0
General Purpose I/O Function
73 I/O_{16tsh Pulse Width Modulator Output}
GP23
KC19
General Purpose I/O Function
74 I/O_{12tsm Keyboard Matrix Column Output}
GP22
KC18
General Purpose I/O Function
75 I/O_{12tsm Keyboard Matrix Column Output}
GP21
KC17
General Purpose I/O Function
76 I/O_{12tsm Keyboard Matrix Column Output}
GP20
KC16
General Purpose I/O Function
77 I/O_{12tsm Keyboard Matrix Column Output}
- 19 -
Publication Release Date: August 2006
Revision 1.0