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EM78612
Universal Serial Bus Microcontroller
Product Specification (V1.0) 03.22.2006 •
••
• 17
(This specification is subject to change without further notice)
CONT (Control Register)
7 6 5 4 3 2 1 0
RW_E /INT TSR2 TSR1 TSR0 PSR2 PSR1 PSR0
NOTE
The CONT register can be read by the instruction "CONTR" and written by the
instruction “CONTW."
CONT [0~2] WatchDog Timer prescaler bits. These three bits are used as the
prescaler of WatchDog Timer.
CONT [3~5] TCC Timer prescaler bits.
The relationship between the prescaler value and these bits are as shown below:
PSR2/TSR2 PSR1/TSR1 PSR0/TSR0 TCC Rate WDT Rate
( 8mS )
0 0 0 6MHz / 2 8 ms
0 0 1 6MHz / 4 16 ms
0 1 0 6MHz / 8 32 ms
0 1 1 6MHz / 16 64 ms
1 0 0 6MHz / 32 128 ms
1 0 1 6MHz / 64 256 ms
1 1 0 6MHz / 128 512 ms
1 1 1 6MHz / 256 1024 ms
CONT [6] Interrupt enable control bit. This bit toggles Interrupt function between
enable and disable. It is set to 1 by the interrupt disable instruction "DISI"
and reset by the interrupt enable instructions "ENI" or "RETI."
0: Enable the Interrupt function.
1: Disable the Interrupt function.
CONT [7] Remote wake-up enable bit. This bit is set to 1, if host enables device to
remote wake-up PC. It could be modified by SetFeature() & ClearFeature()
Request.
IOC5 ~IOC7 I/O Port Direction Control Registers
Each bit controls the I/O direction of three I/O ports ( Port5~Port7 ) respectively. When
these bits are set to 1, the relative I/O pins become input pins. Similarly, the I/O pins
becomes outputs when the relative control bits are cleared.
1: Input direction.
0: Output direction.