Service manual
Schematic Diagrams
CPU1 L6751 Controller B - 53
B.Schematic Diagrams
CPU1 L6751 Controller
Sheet 52 of 63
CPU1 L6751
Controller
PC235
0.1u_10V_X5R_04
PR222
10K_1%_04
PR118
1.1K_1%_04
PR223
0_04
PC230
0.1u_16V_Y 5V_04
PC232
100p_50V_NPO_04
PR136
*1K_04
PR221
300_1%_04
D03-0929J
Add
PR262
10K_1%_04
PR238 *300_1%_04
PR71
100_1%_04
PR257
2.2K_04
PC83
0.022u_16V_X7R_04
PC221
3300p_5 0V_X7R _04
PR263
12K_1%_04
PR261
10K_1%_04
PC228
0.1u_10V_X5R_04
PC231
1u_6.3V_X5R_04
PR114
12K_1%_04
PR216 5.6K_1%_04
PR251 0_04
PR117
270_1%_04
VCORE
3.3V
SENDRV 53
V_CPU_VTT
V_CPU_VTT
PWM1 53
ENDRV 53
SPWM 53
PWM4 53
PWM3 53
PWM2 53
PH1_PHASE 53
SPH_PHASE 53
PWM6 53
PWM5 53
PH2_VOUT 53
PH1_PHASE 53
PH1_VOUT 53
PH3_PHASE 53
PH3_VOUT 53
PH2_PHASE 53
PH5_VOUT 53
PH4_PHASE 53
PH4_VOUT 53
PH6_PHASE 53
PH6_VOUT 53
PH5_PHASE 53
NTC1 53
NTC2 53 SPH_PHASE 53
SPH_VOUT 53
VSS_VCC_SENSE 9
SNTC1 53
SNTC2 53
SVI DD ATA 5, 46
PROC HOT_N 5
VCC_SENSE 9
SMALER T# 25
SVI DC LK 5,46
SVIDALERT_N 5,46
4.7n
VCORE_ON33,51
VSS_VSA_SENSE 9
4.7n
12V
SVR_RDY 47
VCORE_ON/ALLSYS_PWR_GD
VSA_SENSE 9
STM
CHECK CLOSE PAD
V_CPU_VCCSA
PR74 *0_04
PR131 150_04
PR310 0_04
PR309 0_04
VDRV
ENVTT
PWM3
CS6N
5V_P
PWM1
PHASE_VCORE
OSC
VIN_CPU
VR_RDY
GDC
ADDR
STM
STCOMP
SCOMP
PWM 4
PR317 *0_04
GND
SMB_DATA_MAIN
PWM2
SMALERT#
SMB_CLK_MAIN
ILIMIT
SENDRV
SPWM
TM
CS2P
CS2N
SIMON
SCSN
SCSP
TCOMP
VRHOT
SVSEN
SFBR
DPM12/23
SRGND
DPM34/56
PWM5
IMAX/SIMAX
SREF
SOS C
SFB
5V
ENDRV
PWM6
GND
CS1N
10n
GND
IMON
SVR_RDY
CS3N
FBR
LTB
RGND
REF
VCC5
FB
VSEN
BOOT/TMAX
CS4P
CS3P
CS5P
COMP
CS1P
CS5N
CS4N
VTT_PGD51
CS6P
12V
SVCLK
D03-1005R
Modify
0718J
VCORE boot ¹qÀ£§ï¬° 0V
VR_RDY6,41
DIFFERENTIAL PAIRs
CS5N
SVDATA
SVIDALERT_N
CS6N
DIFFERENTIAL PAIRs
PHASE_VCORE
MONITORING INPUT
CURRENT/VOLTAGE
ENVTT
DIFFERENTIA L PA IRs
IC ENABLE
SVI BUS (37.5MHz!!)
DIFFERENTIAL PAIRs
CS2P
SVCLK
IMON
SIMON
IMON
VRHOT
GDC
CS4P
IMAX/SIMAX
VSA
THERMAL SE NSING
TCO MP
VIN_CPU
VCC5
DIFFERENTIA L PA IRs
BOOT/TMAX
ENDRV
CS3P
DPM12/23
ADDR
VCC5
SPWM
FBR
RGND
VDRV
SMB_DATA_MAIN
SMALERT#
PIN Strapping
PWM2
VCC
CURRENT SENSE
IC Power Supply
and GDC
PWM4
DPM34/56
VSEN
CS2N
Filter as close to IC
as possible!
PMBUS
FSW
Definition
SCSP
SCSN
STCOMP
PWM1
VCC Compensation Network
CS4N
OSC
PWM Gate Drive
probe points
DIFFERENTIAL PAIRs
SOSC
SPHASE = ILIM in
Rev1.4 (Stuff
Capacitor, un-stuff
RSPH_H)
PWM5
PWM6
REF
PWM3
Thermal Compensation
SVIDALERT_N
SVDATA
SENDRV
CS1N
SFBR
VCC5
SVSEN
VSA Compensation Network
SREF
ILIMIT
SRGN D
FBR
SCOMP
SFB
VCC5
CS3N
PJ12 *OPEN_40mil
VSA
CURRENT SENSE
LTB
LTB
GLOOP
PROBE
POINT
VCC
THERMAL SENSING
CS1P
FB
CS5P
CS6P
PR217 13K_1%_04
SMB_DATA_MAIN 6,18,25,30,37,46,51
COMP
PR259
*1K_04
PR107
4.7K_1%_04
PC94
2200p_50V_X7R_04
PR252
20K_1%_04
PC87
0.022u_16V_X7R_04
PC89 0.1u_10V_X5R_04
PC79
0.022u_16V_X7R_04
PR212 13K_1%_04
PR100
*12.7K_1%_04
PR111
0_04
PR243
1K_1%_04
PR130
*56_04
PR113
*150K_1%_04
PR255 120K_1%_04
PC229 0.1u_10V_X5R_04
PR266
2.7K_1%_04
PR265
0_04
PR72
100_1%_04
PC225
1u_25V_Y5V_06
PC219
33p_50V_NPO_04
PC202 0.1u_10V_X5R_04
PR132
*10K_04
PC213
330p_50V_X7R_04
PC84 0.1u_10V_X5R_04
PR209
1.8K_1%_04
PR244
11K_1%_04
PR137
56_04
PR215 13K_1%_04
PC216
470p_50V_X7R_04
PC226
1u_6.3V_X5R_04
PR214
1.8K_1%_04
PR121
10K_1%_04
PR233
56_1%_04
PR 248
*59K_1%_04
PR133
62K_1%_04
PR116
27K_1%_04
PR220
1.8K_1%_04
PR230
*0_04
PC223
1000p_50V_X7R_04
PR99
62K_1%_04
PR115
6.8K_1%_04
PC 207
0.1u_10V_X5R_04
PR122 2.2_06
PR218 13K_1%_04
PR219
1.8K_1%_04
PR249
49.9K_1%_04
PR129
100_1%_04
PC233
4700p_50V_X7R_04
PR210
1.8K_1%_04
PC81 0.1u_10V_X5R_04
PR239
21K_1%_04
PR231
18K_1%_04
PR264
470_1%_06
PR70
100_1%_04
PR138
*220K_1%_04
PC90
0.022u_16V_X7R_04
PR250 2.2_06
PC220
3300p_50V_X7R_04
PC214 0.1u_10V_X5R_04
PR254
10K_1%_04
PC103
0.1u_10V_X5R_04
PR135
0_04
PR211 13K_1%_04
PR134
2K_1%_04
PR245
1K_1%_04
PR207
475_1%_04
PR258
*10K_1%_04
PR256
12K_1%_04
PC85 0.1u_10V_X5R_04
PC80 0.1u_10V_X5R_04
PC100
0.022u_16V_X7R_04
PR253
100K_04
PU17
L6751A
PWM3
1
PWM2
2
PHASE
4
READY
5
CS6N
7
CS5P
9
CS4N
11
CS3P
13
CS2N
15
CS1P
17
CS1N
18
SOSC
19
TM
21
SENDRV
23
VRHOT
25
SCSP
27
SIMON
29
SRGND
31
SFBR
33
SFB
35
IMAX/SIMAX
37
SMDATA
39
SMCLK
41
ADDR
43
STCOMP
45
VIN
47
ENVTT
48
ALERT#
50
BOOT/TMAX
52
GDC
54
VDRV
55
COMP
56
VSEN
58
LTB
60
REF
62
SREADY
64
PWM6
66
PWM4
68
SCOMP
36
VCC5
53
PWM1
3
GND
6
CS6P
8
CS5N
10
CS4P
12
CS3N
14
CS2P
16
SREF
20
SPWM
22
SPH ASE
24
TCOMP
26
SCSN
28
DPM34/46
30
DPM12/23
32
SVSEN
34
GND
38
SMALERT#
40
NC
42
STM
44
OSC
46
SVCLK
49
SVDATA
51
FB
57
FBR
59
RGND
61
IMON
63
ENDRV
65
PWM5
67
EPAD
69
PC212
0.01u_16V_X7R_04
PR112
110K_1%_04
PR208 13K_1%_04
PR260
*1K_04
PR229
680_1%_04
PR225
8.2K_1%_04
PC82
0.022u_16V_X7R_04
PC208
4700p_50V_X7R_04
PR213
1.8K_1%_04
PC86
0.022u_16V_X7R_04
PR247
10K_1%_04
PC204
0.01u_50V_X7R_04
PC22 7
47p_50V_X7R_04
5VS
5V_P
5V_P
D03-1005R
Modify
D03-1005R
Modify
D03-1005R
Modify
D03-1005R
Modify
5V_P
5V_P
PR318 *0_06
5V_P
PR319 0_06
D03-1006R
Modify
PR120
47K_1%_04
PR242
10K_1%_04
SMB_CLK_MAIN 6,18,25,30,37,46,51
SMB_CLK_MAIN
PR224
100K_04
PR73
100_1%_04
PR 105
2K_1%_04
PC91
0.068u_10V_X7R_04
TM