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ISL6563CRZ bảng dữ liệu(PDF) 11 Page - Renesas Technology Corp

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ISL6563
FN9126 Rev 8.00
Page 11 of 20
Jun 10, 2010
DYNAMIC VID (VID-ON-THE-FLY)
The ISL6563 is capable of executing on-the-fly output
voltage changes. The way the ISL6563 reacts to a change in
the VID code is dependent on the VID configuration. In
VRM9 or AMD Hammer settings, the ISL6563 checks for a
change in the VID code four times each switching cycle. The
VID code is the bit pattern present at pins VID4-VID0. If a
new code is established and it stays the same for 12
switching cycles, the ISL6563 begins changing the reference
by making one step change every four switching cycles until
it reaches the new VID code. Figure 5 depicts such a
transition, from 1.5V to 1.7V
TABLE 3. VRM10 VOLTAGE IDENTIFICATION
CODES
VID4
VID3
VID2
VID1
VID0
VID5
VDAC
1
111
11
Off
1
111
10
Off
0
1
0
1
0
0
0.8375
01
0
0\
1
1
0.8500
0
1
0
0
1
0
0.8625
0
1
0
0
0
1
0.8750
0
1
0
0
0
0
0.8875
0
0
1
1
1
1
0.9000
0
0
1
1
1
0
0.9125
0
0
1
1
0
1
0.9250
0
0
1
1
0
0
0.9375
0
0
1
0
1
1
0.9500
0
0
1
0
1
0
0.9625
0
0
1
0
0
1
0.9750
0
0
1
0
0
0
0.9875
0
0
0
1
1
1
1.0000
0
0
0
1
1
0
1.0125
0
0
0
1
0
1
1.0250
0
0
0
1
0
0
1.0375
0
0
0
0
1
1
1.0500
0
0
0
0
1
0
1.0625
0
0
0
0
0
1
1.0750
0
0
0
0
0
0
1.0875
1
1
1
1
0
1
1.1000
1
1
1
1
0
0
1.1125
1
1
1
0
1
1
1.1250
1
1
1
0
1
0
1.1375
1
1
1
0
0
1
1.1500
1
1
1
0
0
0
1.1625
1
1
0
1
1
1
1.1750
1
1
0
1
1
0
1.1875
1
1
0
1
0
1
1.2000
1
1
0
1
0
0
1.2125
1
1
0
0
1
1
1.2250
1
1
0
0
1
0
1.2375
1
1
0
0
0
1
1.2500
1
1
0
0
0
0
1.2625
1
0
1
1
1
1
1.2750
1
0
1
1
1
0
1.2875
1
011
01
1.300
1
0
1
1
0
0
1.3125
1
0
1
0
1
1
1.3250
1
0
1
0
1
0
1.3375
1
0
1
0
0
1
1.3500
1
0
1
0
0
0
1.3625
1
0
0
1
1
1
1.3750
1
0
0
1
1
0
1.3875
1
0
0
1
0
1
1.4000
1
0
0
1
0
0
1.4125
1
0
0
0
1
1
1.4250
1
0
0
0
1
0
1.4375
1
0
0
0
0
1
1.4500
1
0
0
0
0
0
1.4625
0
1
1
1
1
1
1.4750
0
1
1
1
1
0
1.4875
0
1
1
1
0
1
1.5000
0
1
1
1
0
0
1.5125
0
1
1
0
1
1
1.5250
0
1
1
0
1
0
1.5375
0
1
1
0
0
1
1.5500
0
1
1
0
0
0
1.5625
0
1
0
1
1
1
1.5750
0
1
0
1
1
0
1.5875
0
1
0
1
0
1
1.6000
TABLE 3. VRM10 VOLTAGE IDENTIFICATION
CODES (Continued)
VID4
VID3
VID2
VID1
VID0
VID5
VDAC
FIGURE 5. TYPICAL DYNAMIC-VID OPERATION, VRM9 DAC
SETTING
1.5V
VVID
01110
00110
1.5V
VID CHANGE OCCURS HERE
VREF (100mV/DIV)
VOUT (100mV/DIV)



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