NUMICRO-SDK Nuvoton Technology Corporation of America, NUMICRO-SDK Datasheet - Page 426

• Manufacturer Part Number: NUMICRO-SDK
• Description: KIT EVAUATION NUC100/120/130/140
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™r
• Type: MCUr

Specifications of NUMICRO-SDK

• Contents: Board, Cable, CD, Nu-Link
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NUC100, NUC120, NUC130, NUC140

5.13.4.4 REMOTE FRAME
ACK SLOT:
All stations having received the matching CRC_SEQUENCE report this within the ACK SLOT by
super-scribing the ‘recessive’ bit of the TRANSMITTER by a ‘dominant’ bit
ACK DELIMITER:
The ACK DELIMITER is the second bit of the ACK FILED and has to be a ‘recessive’ bit. As a
consequence, the ACK SLOT is surrounded by two ‘recessive’ bits (CRC DELIMITER, ACK
DELIMITER).
8
A station acting as a RECEIVER for certain data can initiate the transmission of the respective
data by its source node by sending a REMOTE FRAME. There are also two kinds of formats,
Standard Format and Extended Format, are existed in the REMOTE FRAME. In both these
formats, it composed of six different bit fields: START OF FRAME, ARBITRATION FIELD,
CONTROL FILED, CRC FILED, ACK FIELD and END OF FRAME.
Contrary to DATA FRAMES, the RTR bit of REMOTE FRAME is ‘recessive’. There is no DATA
FILED, independent of the values of the DATA LENGTH CODE which may be signed any value
within the admissible range 0…8. The value is the DATA LENGTH CODE of the corresponding
DATA FRAME.
The polarity of the RTR bit indicated whether a transmitted frame is a DATA FRAME (RTR bit
‘dominant’) or a REMOTE FRAME (RTR bit ‘recessive’).
Each DATA FRAME and REMOTE FRAME is delimited by a flag sequence consisting of
seven ‘recessive’ bits.
END OF FRAME (Standard Format as well as Extended Format)
NuMicro™ NUC100 Series Technical Reference Manual
Figure 5-80 Format of ACK FIELD
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Publication Release Date: Dec. 22, 2010
Revision V1.06