Avago Technologies LSI53C1020 User Manual
Page 73
Power and Ground Pins
3-17
Version 2.4
Copyright © 2001–2004 by LSI Logic Corporation. All rights reserved.
VSS_IO
A5, A9, A13, A17, A21,
A25, B1, B26, C4, C8,
C12, C16, C20, D24, E1,
F26, G3, H24, J1, K26, L3,
L11–L16, M11–M16, M24,
N1, N11–N16, P11–P16,
P26, R3, R11–R16, T11–
T16, T24, U1, V26, W3,
Y24, AA1, AB26, AC3,
AD7, AD11, AD15, AD19,
AD23, AE1, AF2, AF6,
AF10, AF14, AF18, AF22,
AF26
B2, B25, C3, C24,
D4, D5, D23, E4,
L11–L16, M11–
M16, N11–N16,
P11–P16, R11–
R16, T11–T16,
AB23, AC4, AC5,
AC23, AD3,
AD24, AE2, AE25
G
N/A
VSS_IO provides
ground for the PCI
bus drivers/
receivers, SCSI
bus drivers/
receivers, local
memory interface
drivers/receivers,
and other I/O pins.
VDDA
1
C1, AB21
C5, AB24
P
N/A
VDDA provides
analog circuit
power for PLL
circuit.
VSSA
1
H5, AD24
A4, AC26
G
N/A
VSSA provides
analog circuit
ground for PLL
circuit.
VDDC
D2, E19, J22, M22, N2,
AC7, AD3, AD25, AE3,
AE24, AF15
A5, B19, C15, D7,
M2, R24, U24,
AC9, AD17, AE6,
AF7
P
N/A
VDDC provides
power for core
logic.
VSSC
C21, C26, F25, G4, L22,
P2, AB5, AB7, AB8,
AB23, AB24, AD14
B5, B18, C7, C13,
C14, P1, R23,
T26, AC18, AD8,
AE10, AF6
G
N/A
VSSC provides
ground for core
logic.
PCI5VBIAS
M23, W25, Y22, AB22,
AC10, AD9, AD18, AE6,
AF12
C19, K25, R25,
U25, AC11, AC12,
AE17, AF13,
AF23
I
N/A
Connects the PCI
5 V Tolerant pins
to 5 V in a 5 V
system or to 3.3 V
in a 3.3 V system.
1. To reduce signal noise that can affect FSN functionality, place a ferrite bead in series with the VDDA
and VSSA pins. LSI Logic recommends a bead with a rating of 150
Ω
at 100 MHz.
Table 3.17
Power and Ground Pins (Cont.)
Signal
Name
456-Ball Package
384-Ball Package
Type
Strength Description