ZSPM1025A
True Digital PWM Controller (Single-Phase, Single-Rail)
4.3. Address Selection via External Resistors
PMBus™ uses a 7-bit device address to identify different devices connected to the bus. This address can be
selected via external resistors connected to the ADDRx pins.
The resistor values are sensed using the internal ADC during the initialization phase and the appropriate
PMBus™ address is selected. Note that the respective circuitry is only active during the initialization phase; hence
no DC voltage can be measured at the pins. The supported PMBus™ addresses and the values of the respective
required resistors are listed in Table 4.2.
Table 4.2
Supported Resistor Values for PMBus™ Address Selection
Address
(Hex)
ADDR1
ADDR0
Address ADDR1
ADDR0
Address ADDR1
ADDR0
Address ADDR1
ADDR0
Ω
Ω
(Hex)
Ω
Ω
(Hex)
Ω
Ω
(Hex)
Ω
Ω
64
1*
2*
3*
4*
5*
6*
7*
8*
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
680
680
680
680
680
680
680
680
680
680
680
680
680
680
680
680
0
680
32
33
34
35
36
37
38
39
40*
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55*
56
57
58
59
60
61
62
63
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.2 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
1.8 k
0
680
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
2.7 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
3.9 k
0
680
96
97*
98
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
4.7 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
5.6 k
0
680
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
0
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
0
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
0
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
0
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120*
121*
122*
123*
124*
125*
126*
127*
9
10
11
12*
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
680
680
680
680
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
1.2 k
1.8 k
2.7 k
3.9 k
4.7 k
5.6 k
6.8 k
8.2 k
10 k
12 k
15 k
18 k
22 k
27 k
Note: The addresses marked with an asterisk (*) are reserved by the SMBus specification.
© 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the
prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
Data Sheet
October 24, 2013
23 of 46
ETC [ ETC ]
