Intel 8XC196MH Benutzerhandbuch
8XC196MC, MD, MH USER’S MANUAL
10-8
10.5.3 Enabling the PWM Outputs
Each PWM output is multiplexed with a port pin, so you must configure it as a special-function
output signal before using the PWM function. To determine whether the corresponding pin func-
tions as a standard I/O port pin or as a PWM output you must make the proper selections by writ-
ing to the WG_OUTPUT register (see Figure 10-6). Table 10-4 shows the alternate port function
along with the register setting that selects the PWM output instead of the port function.
output signal before using the PWM function. To determine whether the corresponding pin func-
tions as a standard I/O port pin or as a PWM output you must make the proper selections by writ-
ing to the WG_OUTPUT register (see Figure 10-6). Table 10-4 shows the alternate port function
along with the register setting that selects the PWM output instead of the port function.
PWM_COUNT
(read only)
(read only)
Address:
Reset State:
1FB6H
00H
The PWM count (PWM_COUNT) register provides the current value of the decremented period
counter.
counter.
7
0
PWM Count Value
Bit
Number
Function
7:0
PWM Count Value
This register contains the current value of the decremented period counter.
Figure 10-5. PWM Count (PWM_COUNT) Register
Table 10-4.
PWM Output Alternate Functions
PWM Output
Alternate Port Function
PWM Output Enabled When
PWM0
P6.6
WG_OUT.11 = 1
PWM1
P6.7
WG_OUT.12 = 1