M16C65 Datasheet, PDF (682/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
26. Consumer Electronics Control (CEC) Function
Arbitration lost occurs
CEC
ST
H7 H6 H5 H4 H3 H2 H1 H0 EOM ACK
Set to 1 by a program
CTXDEN bit
CTFLG bit
Transmission starts at the rising
edge of the count source
CTABTFLG bit
IR bit in the
CEC1IC register
CCTB1 register
Rewritable period
by a program
CCTBE bit
0
CRXDEN bit
Rewritable period
by a program
Set to 0 by acceptance of an interrupt
or by a program
(Do not rewrite)
(Do not rewrite)
Set to 0 by a
program
Set to 0 in synchronization
with the count source
CRFLG bit
CRSTFLG bit
CRD8FLG bit
IR bit in the
CEC2IC register
CCRB1 register
Set to 0 by acceptance of an
interrupt or by a program
Undefined
Set to 0 by acceptance of an
interrupt or by a program
Header block data
CCRBE bit
CCRBAI bit
Undefined
Undefined
Header block EOM
Header block ACK
Bits CTXDEN and CRXDEN: Bits in the CECC3 register
Bits CTFLG, CTABTFLG, CRFLG, CRD8FLG, and CRSTFLG: Bits in the CECFLG register
Bits CCRBE and CCRBAI: Bits in the CCRB2 register
CCTBE bit: Bit in the CCTB2 register
The above diagram applies under the following conditions:
y The CTISEL1 bit in the CISEL register is set to 1 (transmit arbitration lost interrupt enabled).
y The CFIL bit in the CECC2 register is set to 0 (filter enabled).
y The CRISEL0 bit in the CISEL register is set to 0 (8th bit receive interrupt disabled).
y The CRISEL1 bit in the CISEL register is set to 1 (10th bit receive interrupt enabled).
y The CRISELS bit in the CISEL register is set to 1 (reception start bit interrupt enabled).
Figure 26.16 Transmission Example (When an Arbitration Lost Detected)
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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