EMC EM78612 User Manual
Page 21
EM78612
Universal Serial Bus Microcontroller
Product Specification (V1.0) 03.22.2006
•••• 19
(This specification is subject to change without further notice)
1
0
PS/2 Mode
1
1
USB Test Mode
IOCA [2~5]
Undefined registers. The default value is 0.
IOCA [6,7]
Select the operation frequency in Dual Clock Mode. Four frequencies
are available and can be chosen as Dual Clock mode for running the
MCU program.
Dual_Frq.1
Dual_Frq.0
Frequency
0
0
500Hz
0
1
4kHz
1
0
32kHz
1
1
256kHz
IOCB (Port 6 Pull-Low Control Register)
Default Value: (0B_0000_0000)
7
6
5
4
3
2
1
0
PL67
PL66
PL65
PL64
PL63
PL62
PL61
PL60
IOCB [0~7]
Select whether the 10K Ohm pull-low resistor of Port 6 individual pin is
connected or not.
1: Enable the pull-low function.
0: Disable the pull-low function.
IOCC (Port 6 Pull-High Control Register)
Default Value: (0B_0000_0000)
7
6
5
4
3
2
1
0
PH67
PH66
PH65
PH64
PH63
PH62
PH61
PH60
IOCC [0~7]
Select whether the 132K Ohm pull-high resistor of Port 6 individual pin is
connected or not.
1: Enable the pull-high function.
0: Disable the pull-high function.