ST92196A STMicroelectronics, ST92196A Datasheet - Page 218

• Manufacturer Part Number: ST92196A
• Description: 8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
• Manufacturer: STMicroelectronics

PWM GENERATOR (Cont’d)
OUTPUT COMPLEMENT REGISTER (OCPL)
R251- Read/Write
Register Page 59
Reset Value: 0000 0000 (00h)
This register allows the PWM output level to be
complemented on an individual bit basis.
In default mode (reset configuration), each com-
parison true between a Compare register and the
counter has the effect of setting the corresponding
output.
At counter clear (either by autoclear comparison
true, software clear or overflow when in free run-
ning mode), all the outputs are cleared.
By setting each individual bit (OCPL.x) in this reg-
ister, the logic value of the corresponding output
will be inverted (i.e. reset on comparison true and
set on counter clear).
Example: When set to “1”, the OCPL.1 bit comple-
ments the PWM output 1.
Bit 7 = OCPL.7: Complement PWM Output 7.
Bit 6 = OCPL.6: Complement PWM Output 6.
Bit 5 = OCPL.5: Complement PWM Output 5.
Bit 4 = OCPL.4: Complement PWM Output 4.
Bit 3 = OCPL.3: Complement PWM Output 3.
Bit 2 = OCPL.2: Complement PWM Output 2.
Bit 1 = OCPL.1: Complement PWM Output 1.
Bit 0 = OCPL.0: Complement PWM Output 0.
OCPL.7 OCPL.6OCPL.5 OCPL.4OCPL.3 OCPL.2 OCPL.1OCPL.0
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OUTPUT ENABLE REGISTER (OER)
R252 - Read/Write
Register Page: 59
Reset Value: 0000 0000 (00h)
These bits are set and cleared by software.
0: Force the corresponding PWM output to logic
1: Enable the corresponding PWM output.
Example: Writing 03h into the OE Register will en-
able only PWM outputs 0 and 1, while outputs 2, 3,
4, 5, 6 and 7 will be forced to logic level “1”.
Bit 7 = OE.7: Output Enable PWM Output 7.
Bit 6 = OE.6: Output Enable PWM Output 6.
Bit 5 = OE.5: Output Enable PWM Output 5.
Bit 4 = OE.4: Output Enable PWM Output 4.
Bit 3 = OE.3: Output Enable PWM Output 3.
Bit 2 = OE.2: Output Enable PWM Output 2.
Bit 1 = OE.1: Output Enable PWM Output 1.
Bit 0 = OE.0: Output Enable PWM Output 0.
OE.7 OE.6 OE.5 OE.4 OE.3 OE.2 OE.1 OE.0
level 1. This allows the port pins to be used for
normal I/O functions or other alternate functions
(if available).
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