MC68376BAMFT20 Freescale Semiconductor, MC68376BAMFT20 Datasheet - Page 413

• Manufacturer Part Number: MC68376BAMFT20
• Manufacturer: Freescale Semiconductor

Specifications of MC68376BAMFT20

• Cpu Family: 68K/M683xx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 20MHz
• Interface Type: QSPI/SCI
• Program Memory Type: ROM
• Program Memory Size: 8KB
• Total Internal Ram Size: 7.5KB
• # I/os (max): 18
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• On-chip Adc: 16-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 160
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

STUFFERR — Bit Stuff Error
TXWARN — Transmit Error Status Flag
RXWARN — Receiver Error Status Flag
IDLE — Idle Status
TX/RX — Transmit/Receive Status
FCS[1:0] — Fault Confinement State
BOFFINT — Bus Off Interrupt
MC68336/376
USER’S MANUAL
The STUFFERR bit indicates whether or not the bit stuffing which occurred in the last
transmitted or received message was correct.
The TXWARN status flag reflects the status of the TouCAN transmit error counter.
The RXWARN status flag reflects the status of the TouCAN receive error counter.
The IDLE bit indicates when there is activity on the CAN bus.
The TX/RX bit indicates when the TouCAN module is transmitting or receiving a mes-
sage. TX/RX has no meaning when IDLE = 1.
The FCS[1:0] field describes the state of the TouCAN. Refer to Table D-63.
If the SOFTRST bit in CANMCR is asserted while the TouCAN is in the bus off state,
the error and status register is reset, including FCS[1:0]. However, as soon as the
TouCAN exits reset, FCS[1:0] bits will again reflect the bus off state. Refer to 13.4.4
Error Counters for more information on entry into and exit from the various fault
confinement states.
The BOFFINT bit is used to request an interrupt when the TouCAN enters the bus off
state.
0 = No bit stuffing error was detected since the last read of this register.
1 = A bit stuffing error was detected since the last read of this register.
0 = Transmit error counter
1 = Transmit error counter
0 = Receive error counter
1 = Receive error counter
0 = The CAN bus is not idle.
1 = The CAN bus is idle.
0 = The TouCAN is receiving a message if IDLE = 0.
1 = The TouCAN is transmitting a message if IDLE = 0.
0 = No bus off interrupt requested.
1 = When the TouCAN state changes to bus off, this bit is set, and if the BOFFMSK
bit in CANCTRL0 is set, an interrupt request is generated. This interrupt is not
requested after reset.
Table D-63 Fault Confinement State Encoding
FCS[1:0]
1X
00
01
REGISTER SUMMARY
96.
96.
96.
96.
Error passive
Error active
Bus State
Bus off
MOTOROLA
D-95