DS21448 データシートの表示（PDF） - 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 4-4. 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)
Figure 4-5. Serial Port Operation for Write Access (R = 0) Modes 1 and 2
ICES = 1 (SAMPLE SDI ON THE FALLING EDGE OF SCLK)
SCLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CS
SDI
0
A1
A2
A3
A4
A5
(LSB)
WRITE ACCESS ENABLED
SDO
0
B
DO
D1
D2
D3
(MSB) (LSB)
D4
D5
D6
D7
(MSB)
Figure 4-6. Serial Port Operation for Write Access (R = 0) Modes 3 and 4
ICES = 0 (SAMPLE SDI ON THE RISING EDGE OF SCLK)
SCLK 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CS
SDI
0
A1
A2
A3
A4
A5
(LSB)
WRITE ACCESS ENABLED
SDO
0
B
DO
D1
D2
D3
(MSB) (LSB)
D4
D5
D6
D7
(MSB)
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