Datasheet

CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
User’s Manual U18698EJ1V0UD
156
(5) Input switch control register (ISC)
The input source to TI000 becomes the input signal from the P33/TI000 pin, by setting ISC1 to 0.
ISC can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets ISC to 00H.
Figure 6-10. Format of Input Switch Control Register (ISC)
Address: FF4FH After reset: 00H R/W
Symbol 7 6 5 4 3 2 1 0
ISC 0 0 ICS5 ICS4 ICS3 ICS2 ICS1 ICS0
ICS5 ICS4 TxD6, RxD6 input source selection
0 0 TxD6:P112, RxD6: P113
1 0 TxD6:P13, RxD6: P12
Other than above Setting prohibited
ISC3 RxD6/P113 input enabled/disabled
0 RXD6/P113 input disabled
1 RXD6/P113 input enabled
ISC2 TI52 input source control
0 No enable control of TI52 input (P34)
1
Enable controlled of TI52 input (P34)
Note 1
ISC1 TI000 input source selection
0 TI000 (P33)
1
RxD6 (P12 or P113
Note 2
)
ISC0 INTP0 input source selection
0 INTP0 (P120)
1
RXD6 (P12 or P113
Note 2
)
Notes 1. TI52 input is controlled by TOH2 output signal.
2. TI000 and INTP0 inputs are selected by ISC5 and ISC4.