M16C65 Datasheet, PDF (655/829 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
Table 26.2 CEC Function Specifications (2/2)
Item
Specification
Select functions
Digital filter enabled/disabled
Transmission stop selected
Transmission stop by receiving ACK or NACK can be selected.
Arbitration lost detection conditions
One of the following conditions can be selected.
• When transmitting the start bit and the data bit of Initiator address
• When transmitting the start bit and all data bits
Transmit rising timing selected
• Selected from 8 levels, standard value -180 μs to standard value
+30μs
Transmit falling timing selected
• Start bit: standard value -160μs to standard value
• Data bit: selectable from 4 levels, standard value -310 μs to standard
value
Receive edge detection selected
One of the following conditions can be selected.
• Only a falling edge detected
• Both falling and rising edges detected
ACK output in receiving process
One of the following conditions can be selected.
• Inserted by program
Set by the CCRBAO bit of CCRB2 register.
• Inserted by hardware
ACK is output when matching Destination address. Otherwise, NACK
is output.
Start bit acceptable range
• Select ± 200μs or ± 300μs
Data bit acceptable range
One of the following conditions can be selected.
• Period between a falling edge and a rising edge ± 200 μs,
Period between a falling edge and a falling edge ± 350 μs
• Period between a falling edge and a rising edge ± 300 μs,
Period between a falling edge and a falling edge ± 500 μs
Low pulse output when receive error occurs
• Whether error low pulse is output or not can be selected when the
receive error occurs.
Low pulse output wait control when receive error occurs.
One of the following conditions can be selected.
• Error low pulse is output in synchronization with the rising edge of the
CEC input signal if the CEC input signal is low level when the receive
error occurs.
• Error low pulse is output immediately after the error occurs regardless
of the CEC input signal state.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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