XC3S100E_06 Datasheet, PDF (176/231 Pages) Xilinx, Inc – Configurable Logic Block (CLB)

Pinout Descriptions
R
Footprint Migration Differences
Table 135 summarizes any footprint and functionality differ-
ences between the XC3S100E, the XC3S250E, and the
XC3S500E FPGAs that may affect easy migration between
devices in the CP132 package. There are 14 such balls. All
other pins not listed in Table 135 unconditionally migrate
between Spartan-3E devices available in the CP132 pack-
age.
The XC3S100E is duplicated on both the left and right sides
of the table to show migrations to and from the XC3S250E
and the XC3S500E. The arrows indicate the direction for
easy migration. A double-ended arrow (ÅÆ) indicates that
the two pins have identical functionality. A left-facing arrow
(Å) indicates that the pin on the device on the right uncon-
ditionally migrates to the pin on the device on the left. It may
be possible to migrate the opposite direction depending on
the I/O configuration. For example, an I/O pin (Type = I/O)
can migrate to an input-only pin (Type = INPUT) if the I/O
pin is configured as an input.
The XC3S100E FPGA in the CP132 package has four fewer
BPI-mode address lines than the XC3S250E and
XC3S500E.
Table 135: CP132 Footprint Migration Differences
CP132
Ball Bank
XC3S100E
Type
XC3S250E
XC3S500E
Migration
Type
Migration
Type
Migration
XC3S100E
Type
A12
0 N.C.
Æ
I/O
ÅÆ
I/O
Å
N.C.
B4
0 INPUT
Æ
I/O
ÅÆ
I/O
Å
INPUT
B11
0 N.C.
Æ
I/O
ÅÆ
I/O
Å
N.C.
B12
0 N.C.
Æ
I/O
ÅÆ
I/O
Å
N.C.
C4
0 N.C.
Æ
I/O
ÅÆ
I/O
Å
N.C.
C11
0 INPUT
Æ
I/O
ÅÆ
I/O
Å
INPUT
D1
3 N.C.
Æ
I/O
ÅÆ
I/O
Å
N.C.
D2
3 I/O
Æ
I/O (Diff)
ÅÆ
I/O (Diff)
Å
I/O
K3
3 VREF(INPUT)
Æ
VREF(I/O)
ÅÆ
VREF(I/O)
Å
VREF(INPUT)
M9
2 N.C.
Æ
DUAL
ÅÆ
DUAL
Å
N.C.
M10
2 N.C.
Æ
DUAL
ÅÆ
DUAL
Å
N.C.
N9
2 N.C.
Æ
DUAL
ÅÆ
DUAL
Å
N.C.
N10
2 N.C.
Æ
DUAL
ÅÆ
DUAL
Å
N.C.
P11
2 VREF(INPUT)
Æ
VREF(I/O)
ÅÆ
VREF(I/O)
Å
VREF(INPUT)
DIFFERENCES
14
0
14
Legend:
ÅÆ ^{This pin is identical on the device on the left and the right.}
Æ
This pin can unconditionally migrate from the device on the left to the device on the right. Migration in the other direction may be possible
depending on how the pin is configured for the device on the right.
Å
This pin can unconditionally migrate from the device on the right to the device on the left. Migration in the other direction may be possible
depending on how the pin is configured for the device on the left.
176
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DS312-4 (v3.4) November 9, 2006
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