DS21448 データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS21448 Datasheet PDF : 60 Pages
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DS21448 3.3V T1/E1/J1 Quad Line Interface
Figure 4-2. Serial Port Operation for Read Access (R = 1) Mode 2
ICES = 1 (SAMPLE SDI ON THE FALLING EDGE OF SCLK)
OCES = 0 (UPDATE SDO ON FALLING EDGE OF SCLK)
SCLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CS
SDI
1
A1
A2
A3
A4
A5
SDO
(LSB)
0
B
(MSB)
D0
D1
D2
D3
D4
D5
D6
D7
(LSB)
(MSB)
Figure 4-3. Serial Port Operation for Read Access (R = 1) Mode 3
ICES = 0 (SAMPLE SDI ON THE RISING EDGE OF SCLK)
OCES = 0 (UPDATE SDO ON FALLING EDGE OF SCLK)
SCLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CS
SDI
1
A1
A2
A3
A4
A5
(LSB)
SDO
0
B
(MSB)
D0
D1
D2
D3
D4
D5
D6
D7
(LSB)
(MSB)
Figure 4-4. Serial Port Operation for Read Access (R = 1) Mode 4
ICES = 0 (SAMPLE SDI ON THE RISING EDGE OF SCLK)
OCES = 1 (UPDATE SDO ON RISING EDGE OF SCLK)
SCLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CS
SDI
1
A1
A2
A3
A4
A5
(LSB)
SDO
0
B
(MSB)
D0
D1
D2
D3
D4
D5
D6
D7
(LSB)
(MSB)
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