T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 108
T89C51CC01
Manufacturer Part Number
T89C51CC01
Description
Enhanced 8-Bit Microcontroller
Manufacturer
Atmel
Datasheet
1.T89C51CC01.pdf
(170 pages)
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T89C51CC01
Table 71. CANBT2 Register
CANBT2 (S:B5h)
CAN Bit Timing Registers 2
Note:
No default value after reset.
Number
Bit
6-5
3-1
7
7
4
0
-
The CAN controller bit timing registers must be accessed only if the CAN controller is dis-
abled with the ENA bit of the CANGCON register set to 0.
See Figure 48.
Bit Mnemonic Description
SJW 1
SJW1:0
PRS2:0
6
-
-
-
SJW 0
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Re-synchronization Jump Width
To compensate for phase shifts between clock oscillators of different bus
controllers, the controller must re-synchronize on any relevant signal edge of
the current transmission.
The synchronization jump width defines the maximum number of clock cycles.
A bit period may be shortened or lengthened by a re-synchronization.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Programming Time Segment
This part of the bit time is used to compensate for the physical delay times
within the network. It is twice the sum of the signal propagation time on the
bus line, the input comparator delay and the output driver delay.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
4
-
Tsjw = Tscl x (SJW [1..0] +1)
Tprs = Tscl x (PRS[2..0] + 1)
PRS 2
3
PRS 1
2
PRS 0
1
4129K–CAN–01/05
0
-
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