atmega32c1 ATMEL Corporation, atmega32c1 Datasheet - Page 193

• Manufacturer Part Number: atmega32c1
• Description: Atmega32m1 Automotive 8-bit Avr Microcontroller With 32k/64k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

16.10.13 CAN TTC Timer Registers - CANTTCL and CANTTCH
16.10.14 CAN Transmit Error Counter Register - CANTEC
16.10.15 CAN Receive Error Counter Register - CANREC
16.10.16 CAN Highest Priority MOb Register - CANHPMOB
16.10.17 CAN Page MOb Register - CANPAGE
7647A–AVR–02/08
• Bits 15:0 - TIMTTC15:0: TTC Timer Count
CAN TTC timer counter range 0 to 65,535.
• Bit 7:0 – TEC7:0: Transmit Error Count
CAN transmit error counter range 0 to 255.
• Bit 7:0 – REC7:0: Receive Error Count
CAN receive error counter range 0 to 255.
• Bit 7:4 – HPMOB3:0: Highest Priority MOb Number
MOb having the highest priority in CANSIT registers.
If CANSIT = 0 (no MOb), the return value is 0xF.
Note:
• Bit 3:0 – CGP3:0: CAN General Purpose Bits
These bits can be pre-programmed to match with the wanted configuration of the CANPAGE
register (i.e., AINC and INDX2:0 setting).
Initial Value
Read/Write
Initial Value
Initial Value
Initial Value
Initial Value
Read/Write
Read/Write
Read/Write
Read/Write
Bit
Bit
Bit
Bit
Bit
Bit
Do not confuse “MOb priority” and “Message ID priority”-
TIMTTC15 TIMTTC14 TIMTTC13 TIMTTC12 TIMTTC11 TIMTTC10 TIMTTC9 TIMTTC8 CANTTCH
TIMTTC7
HPMOB3 HPMOB2 HPMOB1 HPMOB0
MOBNB3 MOBNB2 MOBNB1 MOBNB0
15
REC7
R
TEC7
7
0
R/W
R
R
R
7
0
7
0
7
1
7
0
TIMTTC6
TEC6
REC6
14
R
R/W
6
0
R
R
R
6
0
6
0
6
1
6
0
TIMTTC5
TEC5
REC5
R/W
13
5
R
0
R
R
R
5
0
5
0
5
1
5
0
TIMTTC4
REC4
TEC4
R/W
12
R
R
R
R
4
0
4
0
4
1
4
0
4
0
TIMTTC3
CGP3
REC3
TEC3
AINC
R/W
R/W
3
0
R
R
3
0
3
0
3
0
11
R
3
0
CGP2
INDX2
REC2
R/W
TIMTTC2 TIMTTC1 TIMTTC0 CANTTCL
TEC2
R/W
2
0
ATmega32/64/M1/C1
R
R
2
0
2
0
2
0
10
R
2
0
See “Message Objects” on page 176.
CGP1
R/W
INDX1
TEC1
REC1
1
0
R/W
R
R
1
0
1
0
1
0
R
1
9
0
CGP0
R/W
INDX0
REC0
TEC0
0
0
R/W
R
R
0
0
0
0
0
0
R
0
8
0
CANHPMOB
CANPAGE
CANTEC
CANREC
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