W230-03 Datasheet, PDF (13/15 Pages) Cypress Semiconductor – Spread Spectrum FTG for VIA K7 Chipset

PRELIMINARY
Layout Diagram
+3.3V Supply
FB
0.005 µF
C4
G
V_DDQ3
10 µF
C3
G
G
1
V V_DDQ3
48
2 ^{G Core}
G ₄₇
3^G
46
4
G ₄₅
5^G
44
G
6^V
7^G
8
G 43
V ₄₂
G
G ₄₁
9^G
40
10 ^G
G ₃₉
11
38
12
37
13 ^G
G
14 ^V
V ₃₆
G
G ₃₅
15 ^G
34
16
G ₃₃
17
32
18 ^G
G
19 ^V
20 ^G
G ₃₁
V ₃₀
G
G ₂₉
21
G ₂₈
22 ^G
23
24 ^G
V ₂₇
G
G ₂₆
25
W230-03
FB = Dale ILB1206 - 300 (300Ω @ 100 MHz)
C3 = 10–22 µF Ceramic C4 = 0.005 µF C6 = 0.01 µF
G = VIA to GND plane layer V =VIA to respective supply plane layer
Note: Each supply plane or strip should have a ferrite bead and capacitors
Document #: 38-07357 Rev. *A
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