Renesas M16C/64A Series User Manual page 644

M16C/64A Group
CEC
Set to 1 by a program
CTXDEN bit
CTFLG bit
CTD8FLG bit
CTNACKFLG bit
IR bit
CCTB1 register
Rewritable period
by a program
CCTBE bit 0
Rewritable period
by a program
CCTBA bit
CTXDEN bit: Bit in the CECC3 register
Bits CTFLG, CTD8FLG, and CTNACKFLG: Bits in the CECFLG register
IR bit: Bit in the CEC1IC register
Bits CCTBE and CCTBA: Bits in the CCTB2 register
The above diagram applies under the following conditions.
The CTISEL2 bit in the CISEL register is set to 1 (transmit error interrupt enabled).
The CTNACK bit in the CECC2 register is set to 1, and the CTACKEN bit is 1 (transmission stops with NACK).
Figure 26.16 Transmission Example (When NACK Received)
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
Header block
. . . .
ST H7 H6 H1
Transmission starts at the rising
edge of the count source
(Do not rewrite)
(Do not rewrite)
Undefined
26. Consumer Electronics Control (CEC) Function
H0 EOM NACK
Set to 0 by acceptance of an
interrupt or by a program
Rewritable period
by a program
0/1
Rewritable period
by a program
Set to 0 by a
program
Becomes 0 in
synchronization with
the count source.
1 (NACK)
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