R01UH0092EJ0110 Rev.1.10
Page 590 of 807
Jul 31, 2012
M16C/64C Group
26. Consumer Electronics Control (CEC) Function
26.2.4
CEC Function Control Register 4 (CECC4)
CRISE2-CRISE0 (Rising timing select bit) (b2-b0)
The rising timing of the signal in transmission is selected. The rising timing is common to the start bit
and data bit. Do not write to bits CRISE2 to CRISE0 while transmitting/receiving.
CABTEN (Error low pulse output enable bit) (b3)
When the CRXDEN bit is 0 (receive disabled), if the CABTEN bit is set to 1 (low pulse output enabled in
receive error) and then the CRXDEN bit is set to 1 (receive enabled), a 3.6 ms low-level pulse is output
if the data bit during reception exceeds the tolerated range. Output timing is selected by setting the
CABTWEN bit.
After setting the CRXDEN bit to 1 (receive enabled) and then setting the CABTEN bit to 1 while not
receiving, a low pulse is output when writing to the CABTEN bit.
After setting the CRXDEN bit to 1 (receive enabled) and then setting the CABTEN bit to 1 if the
receiving data bit exceeds the tolerated range, a low pulse is output.
Symbol
CECC4
Address
0353h
Reset Value
00h
CEC Function Control Register 4
Bit Symbol
Bit Name
Function
RW
b7 b6 b5 b4 b3
b2 b1 b0
CRISE0
RW
CRISE1
RW
RW
CRISE2
RW
CABTEN
Error low pulse output
enabled bit
0: Disabled
1: Enabled
RW
CFALL0
RW
CFALL1
RW
CREGFLG
Receive edge detect flag
0: Not detected
1: Detected
RO
Rising timing select bit
b2 b1 b0
0 0 0: Standard value
0 0 1: Standard value - 30
μ
s
0 1 0: Standard value - 60
μ
s
0 1 1: Standard value - 90
μ
s
1 0 0: Standard value - 120
μ
s
1 0 1: Standard value - 150
μ
s
1 1 0: Standard value - 180
μ
s
1 1 1: Standard value + 30
μ
s
Falling timing select bit
Refer to the following.
CABTWEN
Error low pulse output wait
control bit
0: Low pulse output regardless of
CEC signal state
1: Low pulse output at the rising edge
of the CEC signal
RW
Содержание M16C Series
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