MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 590

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

16.3.3 Bit Timing
MPC555
USER’S MANUAL
matched to a locked message buffer, that message will be transferred into that mes-
sage buffer once it is unlocked, regardless of whether that message’s masked identi-
fier still matches the receive buffer identifier.
Table 16-7
Programmer’s Model
The TouCAN module uses three 8-bit registers to set up the bit timing parameters re-
quired by the CAN protocol. Control registers one and two (CANCTRL1, CANCTRL2)
contain the PROPSEG, PSEG1, PSEG2, and the RJW fields which allow the user to
configure the bit timing parameters. The prescaler divide register (PRESDIV) allows
the user to select the ratio used to derive the S-clock from the IMB clock. The time
NOTES:
/
Message Buffer (MB)
MPC556
1. Match for extended format (MB3).
2. Match for standard format (MB2).
3. No match for MB3 because of ID0.
4. No match for MB2 because of ID28.
5. No match for MB3 because of ID28, match for MB14.
6. No match for MB14 because of ID27.
7. Match for MB14.
RX Global Mask
RX Message In
RX Message In
RX 14 Mask
Table 16-7 Mask Examples for Normal/Extended Messages
/Mask
MB14
shows mask examples for normal and extended messages. Refer to
MB2
MB3
MB4
MB5
Mask Bit
Table 16-6 Receive Mask Register Bit Values
0
1
for more information on Rx mask registers.
The corresponding incoming ID bit is “don’t care”
The corresponding ID bit is checked against the incoming ID
bit to see if a match exists
1 1 1 1 1 1 1 1 0 0 0
0 0 0 0 0 0 1 1 1 1 1
0 0 0 0 0 0 1 1 1 0 1
1 1 1 1 1 1 1 1 0 0 0
1 1 1 1 1 1 1 1 1 1 0
1 1 1 1 1 1 1 1 0 0 1
1 1 1 1 1 1 1 1 0 0 1
1 1 1 1 1 1 1 1 0 0 1
0 1 1 1 1 1 1 1 0 0 0
0 1 1 1 1 1 1 1 0 0 0
0 1 1 1 1 1 1 1 1 1 1
1 0 1 1 1 1 1 1 0 0 0
0 1 1 1 1 1 1 1 0 0 0
1 1 1 1 1 1 1 1 0 0 0
CAN 2.0B CONTROLLER MODULE
ID[28:18]
Base ID
Rev. 15 October 2000
IDE
0
1
0
1
1
1
0
1
0
1
1
1
Values
Table 16-6
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
Extended ID
ID[17:0]
shows mask bit values.
—
—
—
—
Match
MOTOROLA
—
—
—
—
14
—
—
—
—
—
—
3
2
—
1
2
3
4
5
6
7
16.7
16-8