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UCD9244RGCT Datasheet(PDF) 13 Page - Texas Instruments

Part # UCD9244RGCT
Description  Digital PWM System Controller with 4-bit, 6-bit, or 8-bit VID Support
PDF  40 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

UCD9244RGCT Datasheet(HTML) 13 Page - Texas Instruments

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VID device #1
VCNTL[0]
VCNTL[1]
VCNTL[2]
VCNTL[3]
VID device #2
VCNTL[0]
VCNTL[1]
VCNTL[2]
VCNTL[3]
VID device #3
VCNTL[0]
VCNTL[1]
VCNTL[2]
VCNTL[3]
VID device #4
VCNTL[0]
VCNTL[1]
VCNTL[2]
VCNTL[3]
VID1A
VID4A
VID1B
VID4B
VID1C
VID4C
VID1S
VID4S
UCD9244
VID2A
VID3A
VID2B
VID3B
VID2C
VID3C
VID2S
VID3S
UCD9244
www.ti.com
SLVSAL6A
– NOVEMBER 2010 – REVISED FEBRUARY 2011
Table 2. PMBus Address Bins(1)
ADDR0
(short)
(open)
42.2k
48.7k
56.2k
64.9k
75k
86.6k
100k
115k
133k
154k
178k
205k
< 36.5k
> 237k
< 36.5k
126
126
126
126
126
126
126
126
126
126
126
126
126
126
(short)
42.2k
126
126(2)
1
2
3
4
5
6
7
8
9
10
11(3)
126
48.7k
126
126(2)
13
14
15
16
17
18
19
20
21
22
33
126
56.2k
126
24
25
26
27
28
29
30
31
32
33
34
35
126
64.9k
126
36
37
38
39
40
41
42
43
44
45
46
47
126
75k
126
48
49
50
51
52
53
54
55
56
57
58
59
126
86.6k
126
60
61
62
63
64
65
66
67
68
69
70
71
126
100k
126
72
73
74
75
76
77
78
79
80
81
82
83
126
115k
126
84
85
86
87
88
89
90
91
92
93
94
95
126
133k
126
96
97
98
99
100
101
102
103
104
105
106
107
126
154k
126
108
109
110
111
112
113
114
115
116
117
118
119
126
178k
126
120
121
122
123
124
125
126
126(2)
126
126
126
126
126
205k
126
126
126
126
126
126
126
126
126
126
126
126
126
126
> 237k
126
126
126
126
126
126
126
126
126
126
126
126
126
126
(open)
(1)
Shaded addresses are not recommended as they will cause conflict when multiple devices are used.
(2)
Reserved. Do not use.
(3)
Conflicts with ROM. Do not use.
spacer
spacer
VID Interface
The UCD9244 supports VID (Voltage Identification) inputs from up to four external VID enabled devices. The VID
codes may be 4-, 6-, or 8-bit values; the format is selected using the VID_CONFIG PMBus command. In 4- and
6-bit mode, each host uses four VID input signals (VID_A, VID_B, VID_C, and VID_S) to send VID codes to the
UCD9244. In 8-bit mode, the PMBus input is used to receive VID commands from the VID devices
’ I2C
interfaces.
Figure 5. One UCD9244 Controlled by Four DSPs/ASICs Devices Using 4-bit or 6-bit VID Format
© 2010–2011, Texas Instruments Incorporated
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Product Folder Link(s) :UCD9244



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