NEC PD78076 User Manual page 434

Symbol
7 6 5
ADTI ADTI7 0 0
ADTI4 ADTI3 ADTI2 ADTI1
1 0 0
1 0 0
1 0 0
1 0 0
1 0 1
1 0 1
1 0 1
1 0 1
1 1 0
1 1 0
1 1 0
1 1 0
1 1 1
1 1 1
1 1 1
1 1 1
Note 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
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 : Main system clock frequency (f
XX
f : Main system clock oscillation frequency
X
f : Serial clock frequency
SCK
434
CHAPTER 19 SERIAL INTERFACE CHANNEL 1
4 3 2 1
ADTI4 ADTI3 ADTI2 ADTI1 ADTI0
Data Transfer Interval Specification (f
ADTI0
0 0 446.4 s + 0.5/f
0 1 472.0 s + 0.5/f
1 0 497.6 s + 0.5/f
1 1 523.2 s + 0.5/f
0 0 548.8 s + 0.5/f
0 1 574.4 s + 0.5/f
1 0 600.0 s + 0.5/f
1 1 625.6 s + 0.5/f
0 0 651.2 s + 0.5/f
0 1 676.8 s + 0.5/f
1 0 702.4 s + 0.5/f
1 1 728.0 s + 0.5/f
0 0 753.6 s + 0.5/f
0 1 779.2 s + 0.5/f
1 0 804.8 s + 0.5/f
1 1 830.4 s + 0.5/f
.
6
2
+
f
XX
6
2
+
f
XX
0 Address After Reset
FF6BH 00H
Minimum Note
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
µ
SCK
28 0.5
+
f f
XX SCK
36 1.5
+
f f
XX SCK
or f /2)
X X
R/W
R/W
= 2.5-MHz Operation)
XX
Maximum Note
µ
449.6 s + 1.5/f
SCK
475.2 s + 1.5/f µ
SCK
500.8 s + 1.5/f µ
SCK
µ
526.4 s + 1.5/f
SCK
552.0 s + 1.5/f µ
SCK
577.6 µ s + 1.5/f
SCK
603.2 s + 1.5/f µ
SCK
µ
628.8 s + 1.5/f
SCK
µ
654.4 s + 1.5/f
SCK
µ
680.0 s + 1.5/f
SCK
705.6 s + 1.5/f µ
SCK
731.2 s + 1.5/f µ
SCK
µ
756.8 s + 1.5/f
SCK
782.4 s + 1.5/f µ
SCK
808.0 s + 1.5/f µ
SCK
833.6 s + 1.5/f µ
SCK
, the minimum interval time
SCK