MC68F375BGMZP33 Freescale Semiconductor, MC68F375BGMZP33 Datasheet - Page 312

• Manufacturer Part Number: MC68F375BGMZP33
• Description: IC MPU 32BIT 33MHZ 217-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68F375BGMZP33

• Processor Type: M683xx 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 217-PBGA
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Program Memory Type: Flash
• Program Memory Size: 256 KB
• Data Ram Size: 10 KB
• Interface Type: SPI, SCI, CAN
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 16
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: No

7.4.1.2 Fields for Extended Format Frames
7.4.1.3 Fields for Standard Format Frames
7.4.1.4 Serial Message Buffers
MC68F375
REFERENCE MANUAL
Remote Request
ID[28:18]/[17:15]
Request (RTR)
Transmission
RTR/SRR Bit
ID Extended
Table 7-4
frames.
Table 7-5
frames.
16-Bit Time
To allow double buffering of messages, the TouCAN has two shadow buffers called
serial message buffers. The TouCAN uses these two buffers for buffering both
received messages and messages to be transmitted. Only one serial message buffer
is active at a time, and its function depends upon the operation of the TouCAN at that
time. At no time does the user have access to or visibility of these two buffers.
Substitute
Treatment
ID[28:18]
ID[14:0]
Remote
(SRR)
Stamp
Field
(IDE)
Field
RTR
describes the message buffer fields used only for extended identifier format
describes the message buffer fields used only for standard identifier format
Contains the 14 most significant bits of the extended identifier, located in the ID HIGH word of the
message buffer.
Contains a fixed recessive bit, used only in extended format. Should be set to one by the user for
TX buffers. It will be stored as received on the CAN bus for RX buffers.
If extended format frame is used, this field should be set to one. If zero, standard format frame
should be used.
Bits [14:0] of the extended identifier, located in the ID LOW word of the message buffer.
This bit is located in the least significant bit of the ID LOW word of the message buffer;
0 = Data Frame, 1 = Remote Frame.
The ID LOW word, which is not needed for standard format, is used in a standard format buffer
to store the 16-bit value of the free-running timer which is captured at the beginning of the iden-
tifier field of the frame on the CAN bus.
Contains bits [28:18] of the identifier, located in the ID HIGH word of the message buffer. The four
least significant bits in this register (corresponding to the IDE bit and ID[17:15] for an extended
identifier message) must all be written as logic zeros to ensure proper operation of the TouCAN.
This bit is located in the ID HIGH word of the message buffer;
0 = data frame, 1 = remote frame.
If the TouCAN transmits this bit as a one and receives it as a zero, an “arbitration loss” is indicat-
ed. If the TouCAN transmits this bit as a zero and is receives it as a one, a bit error is indicated.
If the TouCAN transmits a value and receives a matching response, a successful bit transmission
is indicated.
Freescale Semiconductor, Inc.
Table 7-4 Extended Format Frames
For More Information On This Product,
Table 7-5 Standard Format Frames
CAN 2.0B CONTROLLER MODULE
Go to: www.freescale.com
Rev. 25 June 03
Description
Description
MOTOROLA
7-6