MC68HC08AZ0 Datasheet, PDF (379/444 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
msCAN08 Controller (msCAN08)
Programmer’s model of message storage
SRR — Substitute Remote Request
This fixed recessive bit is used only in extended format. It must be set
to 1 by the user for transmission buffers and will be stored as received
on the CAN bus for receive buffers.
IDE — ID Extended
This flag indicates whether the extended or standard identifier format
is applied in this buffer. In case of a receive buffer the flag is set as
being received and indicates to the CPU how to process the buffer
identifier registers. In case of a transmit buffer the flag indicates to the
msCAN08 what type of identifier to send.
1 = Extended format (29 bit)
0 = Standard format (11 bit)
RTR — Remote transmission request
This flag reflects the status of the Remote Transmission Request bit
in the CAN frame. In case of a receive buffer it indicates the status of
the received frame and allows to support the transmission of an
answering frame in software. In case of a transmit buffer this flag
defines the setting of the RTR bit to be sent.
1 = Remote frame
0 = Data frame
ADDR
$xxb0
$xxb1
$xxb2
$xxb3
REGISTER R/W BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2
IDR0
IDR1
IDR2
IDR3
R
ID10 ID9
W
R
ID2
ID1
W
R
W
R
W
ID8
ID7
ID6
ID5
ID0
RTR IDE(0)
Figure 12. Standard identifier mapping registers
BIT 1
ID4
BIT 0
ID3
27-can
MOTOROLA
msCAN08 Controller (msCAN08)
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MC68HC08AZ0
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