CP3UB26G18NEPX National Semiconductor, CP3UB26G18NEPX Datasheet - Page 108
CP3UB26G18NEPX
Manufacturer Part Number
CP3UB26G18NEPX
Description
Manufacturer
National Semiconductor
Datasheet
1.CP3UB26G18NEPX.pdf
(270 pages)
Specifications of CP3UB26G18NEPX
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
128
Package Type
LQFP
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CP3UB26G18NEPX
Manufacturer:
Texas Instruments
Quantity:
10 000
- Current page: 108 of 270
- Download datasheet (4Mb)
www.national.com
Error Frame
As shown in Figure 30, the Error Frame consists of the error
flag and the error delimiter bit fields. The error flag field is
built up from the various error flags of the different nodes.
Therefore, its length may vary from a minimum of six bits up
to a maximum of twelve bits depending on when a module
has detected the error. Whenever a bit error, stuff error, form
error, or acknowledgment error is detected by a node, the
node starts transmission of an error flag at the next bit. If a
CRC error is detected, transmission of the error flag starts
Overload Frame
As shown in Figure 31, an overload frame consists of the
overload flag and the overload delimiter bit fields. The bit
fields have the same length as the error frame field: six bits
for the overload flag and eight bits for the delimiter. The
overload frame can only be sent after the end of frame
(EOF) field and in this way destroys the fixed form of the in-
termission field. As a result, all other nodes also detect an
Interframe Space
Data and remote frames are separated from every preced-
ing frame (data, remote, error and overload frames) by the
interframe space (see Figure 32). Error and overload
frames are not preceded by an interframe space; they can
be transmitted as soon as the condition occurs. The inter-
frame space consists of a minimum of three bit fields de-
pending on the error state of the node.
Note:
d = dominant
r = recessive
DATA FRAME OR
REMOVE FRAME
END OF FRAME OR
ERROR DELIMITER OR
OVERLOAD DELIMITER
Note:
d = dominant
r = recessive
d
d
ERROR
FLAG
d
6
d
An overload frame can only start at the end of a frame
An error frame can start anywhere within a frame
d
Figure 31. Overload Frame
d
OVERLOAD
d
Figure 30. Error Frame
d
FLAG
d
6
d
d
ERROR FLAG
d
ECHO
ERROR FRAME
OVERLOAD FRAME
< 6
d
d
108
d
r
at the bit following the acknowledge delimiter, unless an er-
ror flag for a previous error condition has already been start-
ed.
If a device is in the error active state, it can send a “domi-
nant” error flag, while a error passive device is only allowed
to transmit “recessive” error flags. This is done to prevent
the CAN bus from getting stuck due to a local defect. For the
various CAN device states, please refer to Error Types on
page 109.
overload condition and start the transmission of an overload
flag. After an overload flag has been transmitted, the over-
load frame is closed by the overload delimiter.
Note: The CAN module never initiates an overload frame
due to its inability to process an incoming message. Howev-
er, it is able to recognize and respond to overload frames ini-
tiated by other devices.
d
r
r
OVERLOAD
r
DELIMITER
r
r
r
8
DELIMITER
r
ERROR
r
r
8
r
r
r
r
r
INTER-FRAME SPACE
r
OR ERROR FRAME
d
OVERLOAD FRAME
INTER-FRAME OR
DS025
DS024
Related parts for CP3UB26G18NEPX
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Dual Line Receiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
TTL to 10k ECL Level Translator with Latch
Manufacturer:
National Semiconductor
Datasheet: