h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 570

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
15.2.3
The bit configuration register (BCR) is a 16-bit readable/writable register that is used to set CAN
bit timing parameters and the baud rate prescaler.
Bits 15 and 14—Resynchronization Jump Width (SJW): These bits set the bit synchronization
range.
Bits 13 to 8—Baud Rate Prescaler (BRP): These bits are used to set the CAN bus baud rate.
Rev. 5.00 Sep 22, 2005 page 544 of 1136
REJ09B0257-0500
Bit 15
BCR7
0
1
Bit 13
BCR5
0
0
0
1
⋅
⋅
⋅
Initial value:
Initial value:
BCR
Bit Configuration Register (BCR)
Bit 12
BCR4
0
0
0
1
⋅
⋅
⋅
Bit 14
BCR6
0
1
0
1
R/W:
R/W:
Bit:
Bit:
Bit 11
BCR3
0
0
0
1
⋅
⋅
⋅
BCR15
BCR7
R/W
R/W
15
0
7
0
Description
Bit synchronization width = 1 time quantum
Bit synchronization width = 2 time quanta
Bit synchronization width = 3 time quanta
Bit synchronization width = 4 time quanta
Bit 10
BCR2
0
0
0
1
⋅
⋅
⋅
BCR14
BCR6
R/W
R/W
14
0
6
0
Bit 9
BCR1
0
0
1
1
⋅
⋅
⋅
BCR13
BCR5
R/W
R/W
13
0
5
0
Bit 8
BCR0
0
1
0
1
⋅
⋅
⋅
BCR12
BCR4
R/W
R/W
12
0
4
0
Description
2 × system clock
4 × system clock
6 × system clock
128 × system clock
BCR11
BCR3
R/W
R/W
11
0
3
0
⋅
⋅
⋅
BCR10
BCR2
R/W
R/W
10
0
2
0
BCR1
BCR9
R/W
R/W
9
0
1
0
(Initial value)
(Initial value)
BCR0
BCR8
R/W
R/W
8
0
0
0