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CHAPTER 14
SERIAL INTERFACE SIO1
User’s Manual U12790EJ2V0UD
(2) Automatic data transmit/receive control register (ADTC)
This register sets automatic receive enable/disable, the operating mode, strobe output enable/disable, busy
input enable/disable and displays automatic transmit/receive execution.
ADTC is set by a 1-bit or 8-bit memory manipulation instruction.
Reset input sets ADTC to 00H.
Figure 14-3. Format of Automatic Data Transmit/Receive Control Register (ADTC)
<6>
<5>
<4>
<3>
<2>
<1>
<0>
<7>
Symbol
ADTC
RE
ARLD ERCE ERR
TRF
STRB BUSY1 BUSY0
FF6AH
00H
R/W Note 1
Address
After reset
R/W
BUSY1
0
1
Control of busy input
Not using busy inputNote 2
Busy input enabled (active high)
Busy input enabled (active low)
BUSY0
×
0
1
STRB
0
1
Control of strobe output
Strobe output disabledNote 3
Strobe output enabled
TRF
1
Status of automatic transmit/receive functionNote 4
End of automatic transmission/reception detected.
(This bit is set to 0 upon suspension of
automatic transmission/reception or when ARLD = 0.)
Automatic transmission/reception in progress.
(This bit is set to 1 when data is written to SIO1.)
R/W
R
ERR
0
1
Error detection of automatic transmit/receive
function
No error
(This bit is set to 0 when data is written to SIO1.)
Error occurred
R/W
ARLD
0
1
Operating mode selection of automatic transmit/
receive function
Single operating mode
Repetitive operating mode
R/W
RE
0
1
Receive control of automatic transmit/receive
function
Receive disabledNote 5
Receive enabled
R/W
ERCE
0
Error check control of automatic transmit/
receive function
Error check disabled
Error check enabled (only when BUSY1 = 1)
0
1