Datasheet

CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50, 51, AND 52
User’s Manual U18698EJ1V0UD
227
(3) Input switch control register (ISC)
By setting ISC2 to 1, the TI52 input signal can be controlled via the TOH2 output signal.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Figure 7-12. 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 ISC5 ISC4 ISC3 ISC2 ISC1 ISC0
ISC5 ISC4 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
R
XD6 (P12 or P113
Note 2
)
Notes 1. TI52 input is controlled by TOH2 output signal.
2. P12 or P113 is selected by ISC5 and ISC4.