Datasheet

78K0/Ix2 CHAPTER 14 SERIAL INTERFACE UART6/DALI
R01UH0010EJ0500 Rev.5.00 443
Feb 28, 2012
(8) Input switch control register (ISC)
The input switch control register (ISC) is used to receive a status signal transmitted from the master during LIN (Local
Interconnect Network) reception.
The signal input from the R
XD6 pin is selected as the input source of INTP0 and TI000 when ISC0 and ISC1 are set to
1 (refer to Figure 14-3 Port Configuration for LIN Reception Operation).
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Figure 14-12. 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 0 0 0 0 ISC1 ISC0
ISC1 TI000 input source selection
0 TI000
1 RXD6
ISC0 INTP0 input source selection
0 INTP0
1 RXD6
Remark 78K0/IA2, 78K0/IB2 (32 pins): P00/TI000/INTP0/<TOH1>/<TI51>, P121/X1/TOOLC0/<TI000>/<INTP0>,
RxD6/SDAA0/P61
78K0/IB2 (30 pins): P00/TI000/INTP0, P121/X1/TOOLC0/<TI000>/<INTP0>, RxD6/SDAA0/P61
(9) Port mode register 6 (PM6)
This register set port 6 input/output in 1-bit units.
PM6 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to FFH.
When using the P60/T
XD6/SCLA0 pin for serial interface data output, clear PM60 to 0 and set the output latch of P60
to 1.
When using the P61/R
XD6/SDAA0 pin for serial interface data input, set PM61 to 1. The output latch of P61 at this
time may be 0 or 1.
Figure 14-13. Format of Port Mode Register 6 (PM6)
Address: FF26H After reset: FFH R/W
Symbol 7 6 5 4 3 2 1 0
PM6 1 1 1 1 1 1 PM61 PM60
PM6n P6n pin I/O mode selection (n = 0, 1)
0 Output mode (output buffer on)
1 Input mode (output buffer off)