Samsung 8-Bit CMOS Microcontroller, S3C9228/P9228 user manual Osccon Oscillator Control Register

S3C9228/P9228CONTROL REGISTERS

OSCCON — Oscillator Control Register D3H

Bit Identifier

RESET Value

Read/Write

.7-.4

.3

.7	.6	.5	.4	.3	.2	.1	.0
–	–	–	–	0	0	–	0
–	–	–	–	R/W	R/W	–	R/W

Not used for S3C9228/P9228

Main Oscillator Control Bit

0Main oscillator RUN

1Main oscillator STOP

.2 Sub Oscillator Control Bit

0 Sub oscillator RUN

1 Sub oscillator STOP

.1

.0

Not used for S3C9228/P9228

System Clock Selection Bit

0Select main oscillator for system clock

1Select sub oscillator for system clock

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