M16C65 Datasheet, PDF (683/829 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
26.4 Interrupts
The CEC function has CEC1 interrupt and CEC2 interrupt. Table 26.9 and Table 26.10 list CEC Interrupt
Sources. These sources cause a request of CEC1 interrupt or CEC2 interrupt. When the CRISELM bit in
the CISEL register is set to 1, the 8th/10th bit receive interrupt request is generated if the received
Destination address is either one of the following case:
• Matches the address selected by the CRADRI1 or CRADRI2 register.
• Broadcast (1111b)
Figure 26.17 shows CEC Function Interrupt.
Table 26.9 CEC1 Interrupt Sources
Type
Source
Interrupt Request Timing
Interrupt Enable
Bit
Transmit
interrupt
8th bit transmitted
When the CTD8FLG bit change CRISEL0
from 0 to 1.
10th bit transmitted
When the CTD8FLG bit changes CRISEL1
from 1 to 0.
Transmit error Arbitration lost
interrupt
When the CTABTFLG bit changes CTISEL2
from 0 to 1.
NACK received (Directly address)
ACK received (Broadcast)
When the CTNACKFLG bit
changes from 0 to 1.
CTD8FLG, CTABTFLG, CTNACKFLG: Bits in the CECFLG register
Table 26.10 CEC2 Interrupt Sources
Type
Source
Interrupt Request Timing
Receive
interrupt
8th bit received
When the CRD8FLG bit changes
from 0 to 1 ⁽¹⁾
10th bit received
When the CRD8FLG bit changes
from 1 to 0 ⁽¹⁾
Start bit detected
When the CRSTFLG bit changes
from 0 to 1
Receive error Nonstandard signal received
interrupt
Wen the CRERRFLG bit changes
from 0 to 1
CRD8FLG, CRSTFLG, CRERRFLG: Bits in the CECFLG register
Note:
1. The CRISELM bit in the CISEL register affects the interrupt.
Interrupt Enable
Bit
CRISEL0
CRISEL1
CRISELS
CRISEL2
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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