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W211B Datasheet, PDF (14/16 Pages) Cypress Semiconductor – FTG for 440BX, VIA Apollo Pro-133, and ProMedia
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PRELIMINARY
Layout Example
+3.3V Supply
FB
.005mF
C4
G
VDDQ3
10mF
C3
G
G
1V
2G
3G
4
5G
G
6V
7G
8
9G
10
11
12
13 G
G
14 V
15 G
16 G
17
18 G
G
19 V
20 G
21
22 G
23
24 G
+2.5V Supply
VDDQ2
FB
10mF
C1
G
.005mf
C2
G
V 48
G
G 47
46
G 45
44
G 43
V 42
G
G 41
40
G 39
38
G 37
V 36
G
G 35
34
G 33
32
G 31
V 30
G
G 29
28
V 27
G*
26
G 25
W211B
FB = Vishay ILB1206 - 300 (300Ω @ 100 MHz) or TDK ACB2012L-120
Cermaic Caps C1 & C3 = 10 - 22 µF C2 & C4 = .005 µF C5 = 10 µF C6 = .1 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
*Note: When using the 48 MHz for clocking video circuitry, then a 10Ω + 10 µF ceramic filter should be used
on pin 27.
Document #: 38-07174 Rev. **
Page 14 of 16
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