T89C51CC02 Atmel, T89C51CC02 Datasheet - Page 82

• Manufacturer Part Number: T89C51CC02
• Description: 8-Bit MCU
• Manufacturer: Atmel

T89C51CC02
CANGSTA (S:AAh)
CAN General Status Register
NOTE:
1. These fields are Read Only.
Reset Value: x0x0 0000b
82
Bit Number Bit Mnemonic
7
-
7
6
5
4
3
2
1
0
OVFG
OVFG
RBSY
ENFG
TBSY
BOFF
ERRP
6
-
-
Reserved
Overload frame flag (1)
Reserved
Transmitter busy (1)
Receiver busy (1)
Enable on-chip CAN controller flag (1)
Bus off mode (1)
Error passive mode (1)
The values read from this bit isindeterminate. Do not set this bit.
This status bit is set by the hardware as long as the produced overload frame is sent.
This flag does not generate an interrupt
The values read from this bit isindeterminate. Do not set this bit.
This status bit is set by the hardware as long as the CAN transmitter generates a frame (remote, data,
overload or error frame) or an ack field. This bit is also active during an InterFrame Spacing if a
frame must be sent.
This flag does not generate an interrupt.
This status bit is set by the hardware as long as the CAN receiver acquires or monitors a frame.
This flag does not generate an interrupt.
Because an enable/disable command is not effective immediately, this status bit gives the true state
of a chosen mode.
This flag does not generate an interrupt.
see Figure 61
see Figure 61
5
-
Figure 66. CANGSTA Register
Preliminary
TBSY
4
RBSY
3
Description
ENFG
2
BOFF
Rev.A - May 17, 2001
1
ERRP
0