431
CHAPTER 19 SERIAL INTERFACE CHANNEL 1
(c) Automatic data transmit/receive interval specify register (ADTI)
This register sets the automatic data transmit/receive function data transfer interval.
ADTI is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets ADTI to 00H.
Notes 1. The interval is dependent only on CPU processing.
2. The data transfer interval includes an error. The data transfer minimum and maximum
intervals are found from the following expressions (n: Value set in ADTI0 to ADTI4).
However, if a minimum which is calculated by the following expressions is smaller than
2/f
SCK
, the minimum interval time is 2/f
SCK
.
Minimum = (n + 1)
×
+
+
Maximum = (n + 1)
×
+
+
Cautions 1. Do not write to ADTI during operation of the automatic data transmit/receive function.
2. Bits 5 and 6 must be set to 0.
3. When controlling the data transfer interval by automatic transmit/receive using
ADTI, busy control (refer to 19.4.3 (4) (a) Busy control option) becomes invalid.
Remark
f
XX
: Main system clock frequency (f
X
or f
X
/2)
f
X
: Main system clock oscillation frequency
f
SCK
: Serial clock frequency
f
XX
f
SCK
28
0.5
2
6
f
XX
f
XX
2
6
f
XX
f
SCK
36
1.5
Minimum
Note 2
18.4 s + 0.5/f
SCK
31.2 s + 0.5/f
SCK
44.0 s + 0.5/f
SCK
56.8 s + 0.5/f
SCK
69.6 s + 0.5/f
SCK
82.4 s + 0.5/f
SCK
95.2 s + 0.5/f
SCK
108.0 s + 0.5/f
SCK
120.8 s + 0.5/f
SCK
133.6 s + 0.5/f
SCK
146.4 s + 0.5/f
SCK
159.2 s + 0.5/f
SCK
172.0 s + 0.5/f
SCK
184.8 s + 0.5/f
SCK
197.6 s + 0.5/f
SCK
210.4 s + 0.5/f
SCK
Maximum
Note 2
20.0 s + 1.5/f
SCK
32.8 s + 1.5/f
SCK
45.6 s + 1.5/f
SCK
58.4 s + 1.5/f
SCK
71.2 s + 1.5/f
SCK
84.0 s + 1.5/f
SCK
96.8 s + 1.5/f
SCK
109.6 s + 1.5/f
SCK
122.4 s + 1.5/f
SCK
135.2 s + 1.5/f
SCK
148.0 s + 1.5/f
SCK
160.8 s + 1.5/f
SCK
173.6 s + 1.5/f
SCK
186.4 s + 1.5/f
SCK
199.2 s + 1.5/f
SCK
212.0 s + 1.5/f
SCK
Data Transfer Interval Specification (f
XX
= 5.0-MHz Operation)
ADTI4 ADTI3 ADTI2 ADTI1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
6
5
4
3
2
1
0
7
Symbol
ADTI ADTI7
0
0
ADTI4 ADTI3 ADTI2 ADTI1 ADTI0
FF6BH 00H R/W
Address After Reset R/W
ADTI7
0
Data Transfer Interval Control
No control of interval by ADTI
Note 1
Control of interval by ADTI (ADTI0 to ADTI4)
1
ADTI0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
Содержание PD78076
Страница 2: ...2 MEMO ...
Страница 12: ...12 MEMO ...
Страница 48: ...48 MEMO ...
Страница 64: ...64 MEMO ...
Страница 82: ...82 MEMO ...
Страница 100: ...100 MEMO ...
Страница 130: ...130 MEMO ...
Страница 180: ...180 MEMO ...
Страница 222: ...222 MEMO ...
Страница 248: ...248 MEMO ...
Страница 288: ...288 MEMO ...
Страница 308: ...308 MEMO ...
Страница 364: ...364 MEMO ...
Страница 494: ...494 MEMO ...
Страница 526: ...526 MEMO ...
Страница 544: ...544 MEMO ...
Страница 558: ...558 MEMO ...
Страница 580: ...580 MEMO ...
Страница 596: ...596 MEMO ...
Страница 598: ...598 MEMO ...
Страница 626: ...626 MEMO ...