Intel 815 - Manual (Page 211)

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
GMCH DECOUPLING DISPLAY CACHE DECOUPLING ICH DECOUPLING
SYSTEM MEMORY DECOUPLING
BULK POWER DECOUPLING
3 VOLT DECOUPLING
GMCH Core Plane Decoupling:
Place 1 .1uF/.01uF pair in each
corner and 2 on opposite sides
close to component if they fit.
Display Cache: Near the power pins.
DIMM Decoupling:
Distribute near DIMM0
Power pins.
ICH 3.3V Plane Decoupling:
Place 1 .uF/.01uF pair in each
corner, and 2 on opposite sides
close to component if they fit.
Distribute near the 1.8V
power pins of the ICH Distribute near the VCCSUS
power pins of the ICH
GMCH 3.3V IO Decoupling:
Place near GMCH Display
Cache Quadrant.
Distribute as close as possible to
GMCH System Memory
Quadrant. DIMM1 Decoupling:
Distribute near DIMM1
Power Pins.
.1F on back side. Do not populate.
.01F on back side. Do not
populate.
INTEL(R) 82815 CHIPSET CUSTOMER REFERENCE BOARD
VRM DECOUPLING
40
1.0
3-26-01
38
Platform Apps Engineering
1900 Prairie City Road
Folsom, CA 95630
REV.
R
Last Revision Date:
Sheet:
of
Title:
intel
VCC12-
VCC12 VCC_5- VCC5
VCC3_3
VCC3_3
VCC1_8
VDDQ
VCC1_8 VDDQ VCC3_3 VCC1_8
VCC3SBY
VCC3SBY
VCC3SBY
VCC3SBY
C272
0.1UF
1
2
C273
0.1UF
1
2
C277
0.1UF
1
2
C243
0.1UF
1
2
C28
0.1UF
1
2
C31
01.UF
1
2
C332
0.1UF
1
2
C383
0.1UF
1
2
C281
0.1UF
1
2
C274
0.1UF
1
2
C329
0.1UF
1
2
C339
0.1UF
1
2
C293
0.1UF
1
2
C290
0.1UF
1
2
C324
0.01UF
1
2
C326
0.01UF
1
2
C328
0.01UF
1
2
C327
0.01UF
1
2
C381
0.1UF
1
2
C286
0.1UF
1
2
C292
0.1UF
1
2
C287
0.1UF
1
2
C227
0.01UF
1
2
C429
0.01UF
1
2
C194
0.01UF
1
2
C223
0.01UF
1
2
C132
0.01UF
1
2
C191
0.01UF
1
2
C430
0.01UF
1
2
C240
0.01UF
1
2
C141
0.1UF
1
2
C202
0.1UF
1
2
C204
0.1UF
1
2
C96
0.1UF
1
2
C246
0.1UF
1
2
C58
0.1UF
1
2
C234
0.01UF
1
2
C231
0.01UF
1
2
C230
0.01UF
1
2
C232
0.01UF
1
2
C228
0.01UF
1
2
C229
0.01UF
1
2
C137
0.01UF
1
2
C433
0.01UF
1
2
C431
0.01UF
1
2
C432
0.01UF
1
2
C198
0.01UF
1
2
C199
0.01UF
1
2
C136
0.01UF
1
2
C139
0.01UF
1
2
C138
0.01UF
1
2
C200
0.01UF
1
2
C201
0.01UF
1
2
C133
0.01UF
1
2
C95
0.1UF
1
2
C434
0.01UF
1
2
C427
0.01UF
1
2
C435
0.01UF
1
2
C373
0.1UF
1
2
C375
0.1UF
1
2
C203
0.1UF
1
2
C142
0.1UF
1
2
C374
0.1UF
1
2
C417
0.1UF
1
2
C416
0.1UF
1
2
C376
0.1UF
1
2
C313
0.1UF
1
2
C420
0.1UF
1
2
C370
0.1UF
1
2
C371
0.1UF
1
2
C319
0.1UF
1
2
C318
0.1UF
1
2
C314
0.1UF
1
2
C418
0.1UF
1
2
C372
0.1UF
1
2
C323
0.1UF
1
2
C377
0.1UF
1
2
C419
0.1UF
1
2
C23
0.1UF
1
2
C59
0.1UF
1
2
C320
0.1UF
1
2
C369
0.1UF
1
2
C21
0.1UF
1
2
C22
0.1UF
1
2
C378
0.1UF
1
2
C379
0.1UF
1
2
C19
0.1UF
1
2
C349
0.1UF
1
2
C311
0.1UF
1
2
C365
0.1UF
1
2
C364
0.1UF
1
2
C310
0.1UF
1
2
C413
0.1UF
1
2
C362
0.1UF
1
2
+
C382
2.2UF
1
2
+
C288
4.7UF
1
2
+
C238
4.7UF
1
2
+
C192
10UF
1
2
+
C20
4.7UF
1
2
+
C97
4.7UF
1
2
+
C421
22UF
1
2
+
C24
22UF
1
2
C338
0.01UF
1
2
+
C366
22UF
1
2
+
C60
22UF
1
2
+
C241
22UF
1
2
C325
0.01UF
1
2
C42
4.7UF
1
2
C34
4.7UF
1
2
C69
4.7UF
1
2
C70
4.7UF
1
2
C54
4.7UF
1
2
C477
0.1UF
1
2
C476
0.1UF
1
2
C475
0.1UF
1
2
C474
0.1UF
1
2
C473
2.2UF
1
2
C32
0.1UF
1
2
C169
4.7UF
1
2
C252
4.7UF
1
2
C245
4.7UF
1
2
C127
0.1UF
1
2
C197
0.1UF
1
2
C131
0.1UF
1
2
C193
0.1UF
1
2
C276
0.1UF
1
2
C275
0.1UF
1
2
C135
0.1UF
1
2
C428
0.1UF
1
2