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CHAPTER 14 SERIAL INTERFACE UART6
User’s Manual U19780EJ2V0UD
378
(7) 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 P11/R
X
D6/TI50
Note
/TO50
Note
pin is selected as the input source of INTP0 and TI000 when
ISC0 and ISC1 are set to 1.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Note
78K0/KB2-A only.
Figure 14-11. 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
ISC2
Note
ISC1 ISC0
ISC1
TI000 input source selection
0
TI000 (P12 : 78K0/KB2-A, P00 : 78K0/KC2-A
1
R
X
D6 (P11)
ISC0
INTP0 input source selection
0
INTP0
(P120)
1
R
X
D6 (P11)
Note
The assignment of pins used in serial interface CSI10 is set by ISC2. For details, see
CHAPTER 15
SERIAL INTERFACE CSI10
.
(8) Port mode register 1 (PM1)
This register sets port 1 input/output in 1-bit units.
When using the P10/T
X
D6/TI51
Note
/TO51
Note
pin for serial interface data output, clear PM10 to 0 and set the output
latch of P10 to 1.
When using the P11/R
X
D6/TI50
Note
/TO50
Note
pin for serial interface data input, set PM11 to 1. The output latch of
P11 at this time may be 0 or 1.
PM1 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to FFH.
Note
78K0/KB2-A only.
Figure 14-12. Format of Port Mode Register 1 (PM1)
Address: FF21H After reset: FFH R/W
Symbol
7 6 5 4 3 2 1 0
PM1 1 1 1 1
PM13
PM12
PM11
PM10
PM1n
P1n pin I/O mode selection (n = 0 to 3)
0
Output mode (output buffer on)
1
Input mode (output buffer off)