Datasheet

Rev. 3.00, 03/04, page 206 of 830
8.6.4 System Control Register 2 (SYSCR2)
SYSCR2 controls the current specifications for the port 6 input pull-up MOSs and address data
multiplex operation.
Bit Bit Name Initial Value R/W Description
7, 6  All 0 R/W Reserved
The initial value should not be changed.
5 P6PUE 0 R/W Port 6 Input Pull-Up Extra
Selects the current specification for the input pull-up
MOS connected by means of KMPCR settings.
0: Standard current specification is selected
1: Current-limit specification is selected
4  0 R/W Reserved
The initial value should not be changed.
3 ADMXE 0 R/W Address data multiplex bus interface enable
0: Normal extended bus interface
1: Address data multiplex extended bus interface
2 to 0  All 0 R/W Reserved
The initial value should not be changed.
8.6.5 Noise Canceler Enable Register (P6NCE)
P6NCE enables or disables the noise canceler circuit at port 6.
Bit Bit Name Initial Value R/W Description
7 P67NCE 0 R/W
6 P66NCE 0 R/W
5 P65NCE 0 R/W
4 P64NCE 0 R/W
3 P63NCE 0 R/W
2 P62NCE 0 R/W
1 P61NCE 0 R/W
0 P60NCE 0 R/W
In 16 bit bus mode in extended mode:
Port 6 operates as the data pin (D7 to D0).
In other mode:
Noise canceler circuit is enabled and the pin state is
fetched in the P6DR in the sampling cycle set by the
P6NCCS.
The operating state changes according to the other
control bits. Check the pin functions.