M16C65 Datasheet, PDF (658/829 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
26.2.2 CEC Function Control Register 2 (CECC2)
CEC Function Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
CECC2
Address
0351h
After Reset
00h
Bit Symbol
Bit Name
Function
RW
0: Detects falling edge acceptable
CRRNG
Receive edge detection
select bit
range
1: Detects both edges acceptable
RW
range
CTNACK
Transmit NACK (ACK) end 0: End with ACK
select bit
1: End with NACK
RW
CTACKEN
Transmit NACK (ACK) end 0: Continue to transmit
control bit
1: End with NACK/ACK
RW
CRACK ACK output control bit
0: Inserted by program
1: Inserted by hardware
RW
CTABTS
Arbitration lost detect
condition select bit
0: When transmitting start bit and
Initiator address
1: When transmitting start bit and all
RW
data bits
CFIL
Digital filter enable bit
0: Filter disabled
1: Filter enabled
RW
CSTRRNG
Start bit acceptable range
select bit
0: ±200 µs
1: ±300 µs
RW
0: Period between falling edge and
rising edge ± 200 µs
Period between falling edge and
CDATRNG
Data bit acceptable range
select bit
falling edge ± 350 µs
1: Period between falling edge and
RW
rising edge ± 300 µs
Period between falling edge and
falling edge ± 500 µs
CTNACK (Transmit NACK (ACK) End Select Bit) (b1)
This bit is enabled when the CTACKEN bit is set to 1 (end with ANCK/ACK).
CTACKEN (Transmit NACK (ACK) End Control Bit) (b2)
Select the end condition by using the CTNACK bit when the CTACKEN bit is set to 1 (end with NACK/
ACK).
CRACK (ACK Output Control Bit) (b3)
When the CRACK bit is set 0 (inserted by program), the value of the CCRBAO bit in the CCRB2 reg-
ister is output as ACK data.
When the CRACK bit is set to 1 (inserted by hardware), ACK is output if the received Destination
address matches the address selected by the CRADRI1 or CRADRI2 register. Table 26.5 lists ACK
Output When Inserted by Hardware.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 623 of 791