176
CHAPTER 10 I/O PORTS
10.2.4
Input Level Select Register
The Input Level Select Register allows to switch from Automotive Hysteresis input
levels to CMOS Hysteresis input levels.
■
Input Level Select Register
The input level select register (ILSR) is located on addresses "0E
H
" and "0F
H
".
Figure 10.2-5 Input Level Select Register (ILSR)
[bit15] ILSPB
If the ILSPB bit is set to "0", the input level of P44 will be selected by IL4 (bit4 of ILSR). If the ILSPB
bit is set to "1", the input level of P44 will be the opposite of the one selected by the IL4 bit. The initial
value of this bit is "0".
The initial value of this register is "0000
H
", so the input levels for all ports will be "Automotive
Hysteresis" after reset.
[bit14] ILI2C
If the ILI2C bit is set to "0", the input level of P42/SDA and P43/SCL will be selected by IL4 (bit4 of
ILSR). If the ILI2C bit is set to "1", the input level of P42/SDA and P43/SCL will be the opposite of the
one selected by the IL4 bit. The initial value of this bit is "0".
[bit13] ILRX0
If the ILRX0 bit is set to "0", the input level of P30/RX0 will be selected by IL3 (bit3 of ILSR). If the
ILRX0 bit is set to "1", the input level of P30/RX0 will be the opposite of the one selected by the IL3
bit. The initial value of this bit is "0".
[bit12] ILRX1
If the ILRX1 bit is set to "0", the input level of P21/RX1 will be selected by IL2 (bit2 of ILSR). If the
ILRX1 bit is set to "1", the input level of P21/RX1 will be the opposite of the one selected by the IL2
bit. The initial value of this bit is "0".
[bit11 to bit0] ILB to IL0
These bits set the input level of the corresponding port. IL0 sets the input level of Port0, ILB sets the
input level of PortB. Setting these bits to "0" selects the "Automotive Hysteresis" input level, setting
these bits to "1" selects the "CMOS Hysteresis" input level. The initial value of these bits is "0".
Address:
00000F
00000E
H
bit
H
ILSR
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R/W
R/W
R/W R/W R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
Initial value:
ILSPB ILI2C ILRX0 ILRX1 ILB ILA IL9 IL8
IL7 IL6 IL5 IL4 IL3 IL2 IL1 IL0
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
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Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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