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Rev. 2.0, 11/00, page 373 of 1037
Bit 4: Selecting the Output Comparing Register (OCRS)
The addresses of the OCRA and OCRB are the same. The OCRS works to control which
register to choose when reading/writing this address. The choice will not influence the operation
of the OCRA and OCRB.
Bit 4
OCRS
Description
0
Selects the OCRA register
(Initial value)
1
Selects the OCRB register
Bit 3: Enabling the Output A (OEA)
This bit works to control the output comparing A signals.
Bit 3
OEA
Description
0
Prohibits the output comparing A signal outputs
(Initial value)
1
Permits the output comparing A signal outputs
Bit 2: Enabling the Output B (OEB)
This bit works to control the output comparing B signals.
Bit 2
OEB
Description
0
Prohibits the output comparing B signal outputs
(Initial value)
1
Permits the output comparing B signal outputs
Bit 1: Output Level A (OLVLA)
This bit works to select the output level to output through the FTOA pin by use of the comparing
match A (matching signal between the FRC and OCRA).
Bit 1
OLVLA
Description
0
Low level
(Initial value)
1
High level
Содержание Hitachi H8S/2191
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