ds2149qt-r Maxim Integrated Products, Inc., ds2149qt-r Datasheet - Page 18

• Manufacturer Part Number: ds2149qt-r
• Description: Ds2149 5v T1/j1 Line Interface Unit
• Manufacturer: Maxim Integrated Products, Inc.

Figure 9-1. Serial Data Port Operation for Read Access
Figure 9-2. Serial Data Port Operation for Write Access
Read Access CLKE = 1
SCLK
CS
SDI
SCLK
CS
SDI
SDO
Read Access CLKE = 0
SCLK
CS
SDI
SDO
SDO
(lsb)
WRITE ACCESS ENABLED
(lsb)
0
(lsb)
1
1
1
1
1
A1
A1
A1
2
2
2
A2
A2
A2
3
3
3
A3
A3
A3
4
4
4
A4
A4
A4
5
5
5
A5
A5
A5
6
6
6
0
0
7
0
7
7
(msb)
(msb)
(msb)
B
B
8
B
18 of 32
8
8
D0
(lsb)
DO
(lsb)
9
9
(lsb)
9
D0
D1
10
D1
10
10
D1
D2
D2
11
11
11
D2
D3
D3
12
12
12
D3
D4
D4
13
13
13
D4
D5
D5
14
14
14
D5
D6
D6
15
15
D6
15
(msb)
(msb)
D7
D7
16
16
(msb)
16
D7