mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 353

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MSCAN Controller
17.13.15 msCAN12 Port CAN Control Register (PCTLCAN)
17.13.16 msCAN12 Port CAN Data Register (PORTCAN)
17.13.17 msCAN12 Port CAN Data Direction Register (DDRCAN)
Technical Data
353
PCTLCAN
PORTCAN
DDRCAN
$013F
$013D
$013E
RESET
RESET
RESET
W
W
R
R
W
R
DDCAN7
PCAN7
Bit 7
Bit 7
Bit 7
0
0
0
-
The following bits control pins 7 through 2 of Port CAN when they are
implemented externally.
PUPCAN — Pull-Up Enable Port CAN
RDPCAN — Reduced Drive Port CAN
DDCAN7 – DDCAN2 — This bits served as memory locations since
there are no corresponding external port pins.
DDCAN6
PCAN6
Freescale Semiconductor, Inc.
Port bits 7 to 2 will read zero when configured as inputs because they
are not implemented externally.
When configured as output, port bits 7 to 2 will read the last value
written.
Reading bits 1 and 0 returns the value of the TxCan and RxCan pins,
respectively.
6
0
6
0
0
6
For More Information On This Product,
0 = Pull mode disabled for Port CAN.
1 = Pull mode enabled for Port CAN.
0 = Reduced drive disabled for Port CAN.
1 = Reduced drive enabled for Port CAN.
DDCAN5
PCAN5
Go to: www.freescale.com
5
0
5
0
0
5
-
MSCAN Controller
DDCAN4
PCAN4
4
0
0
4
0
4
DDCAN3
PCAN3
3
0
0
3
0
3
-
DDCAN2
PCAN2
MC68HC912DG128 — Rev 3.0
2
0
0
2
0
2
PUPCAN
TxCAN
1
0
1
0
0
1
-
MOTOROLA
RDPCAN
RxCAN
Bit 0
Bit 0
Bit 0
0
0
0
-