NEC 78014Y Series, User Manual

Page: 417 / 547

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CHAPTER 17 SERIAL INTERFACE CHANNEL 1
417
Figure 17-4. Automatic Data Transmit/Receive Control Register Format
Notes 1. Bits 3 and 4 (TRF and ERR) are read-only bits.
2. The termination of automatic transmission/reception should be judged by using TRF, not CSIIF1 (interrupt
request flag).
Caution When an external clock input is selected with bit 1 (CSIM11) of serial operating mode register 1
(CSIM1) set to 0, set STRB and BUSY1 of ADTC to 0, 0.
Remark
×
: don’t care
Symbol <7> <6> <5> <4> <3> <2> <1> <0> Address When Reset R/W
ADTC RE ARLD ERCE ERR TRF STRB BUSY1 BUSY0 FF69H 00H R/W
Note 1
R/W
BUSY1 BUSY0 Busy Input Control
0
×
Not using busy input
1 0 Busy input enable (active high)
1 1 Busy input enable (active low)
R/W
STRB Strobe Output Control
0 Strobe output disable
1 Strobe output enable
R
TRF Status of Automatic Transmit/Receive Function
Note 2
0 Detection of termination of automatic
transmission/reception (This bit is set to 0
upon suspension of automatic transmission/
reception or when ARLD = 0)
1 During automatic transmission/reception
(This bit is set to 1 when data is written to SIO1)
R
ERR Error Detection of Automatic Transmit/
Receive Function
0 No error in automatic transmission/reception
(This bit is set to 0 when data is written to SIO1)
1 Error occurred in automatic transmission/
reception
R/W
ERCE Error Check Control of Automatic Transmit/
Receive Function
0 Error check disable in automatic
transmission/reception
1 Error check enable (only when BUSY1 = 1)
R/W
ARLD Operating Mode Selection of Automatic
Transmit/Receive Function
0 Single operating mode
1 Repetitive operating mode
R/W
RE Receive Control of Automatic Transmit/
Receive Function
0 Receive disable
1 Receive enable