XC3S1000-4FG676C

Manufacturer Part NumberXC3S1000-4FG676C
DescriptionFPGA Spartan®-3 Family 1M Gates 17280 Cells 630MHz 90nm Technology 1.2V 676-Pin FBGA
ManufacturerXilinx Inc
XC3S1000-4FG676C datasheets

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Specifications of XC3S1000-4FG676C

Package676FBGAFamily NameSpartan®-3
Device Logic Units17280Device System Gates1000000
Maximum Internal Frequency630 MHzTypical Operating Supply Voltage1.2 V
Maximum Number Of User I/os391Ram Bits442368
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Spartan-3 FPGA Family: Pinout Descriptions
VCCAUX Type: Voltage Supply for Auxiliary
Logic
The VCCAUX pins supply power to various auxiliary cir-
cuits, such as to the Digital Clock Managers (DCMs), the
JTAG pins, and to the dedicated configuration pins (CON-
FIG type). VCCAUX must be +2.5V.
All VCCAUX inputs must be connected together and to the
+2.5V voltage supply. Furthermore, there must be sufficient
supply decoupling to guarantee problem-free operation, as
described in
XAPP623: Power Distribution System (PDS)
Design: Using Bypass/Decoupling Capacitors
Because VCCAUX connects to the DCMs and the DCMs
are sensitive to voltage changes, be sure that the VCCAUX
supply and the ground return paths are designed for low
noise and low voltage drop, especially that caused by a
large number of simultaneous switching I/Os.
GND Type: Ground
All GND pins must be connected and have a low resistance
path back to the various VCCO, VCCINT, and VCCAUX
supplies.
Pin Behavior During Configuration
Table 78
shows how various pins behave during the FPGA
configuration process. The actual behavior depends on the
values applied to the M2, M1, and M0 mode select pins and
the HSWAP_EN pin. The mode select pins determine which
of the DUAL type pins are active during configuration. In
Table 78: Pin Behavior After Power-Up, During Configuration
Serial Modes
Master
Pin Name
<0:0:0>
I/O: General-purpose I/O pins
IO
IO_Lxxy_#
DUAL: Dual-purpose configuration pins
IO_Lxxy_#/
DIN (I)
DIN/D0
IO_Lxxy_#/
D1
IO_Lxxy_#/
D2
IO_Lxxy_#/
D3
IO_Lxxy_#/
D4
114
JTAG configuration mode, none of the DUAL-type pins are
used for configuration and all behave as user-I/O pins.
All DUAL-type pins not actively used during configuration
and all I/O-type, DCI-type, VREF-type, GCLK-type pins are
high impedance (floating, three-stated, Hi-Z) during the
configuration process. These pins are indicated in
as shaded table entries or cells. These pins have a pull-up
resistor to their associated VCCO if the HSWAP_EN pin is
Low. When HSWAP_EN is High, these pull-up resistors are
disabled during configuration.
Some pins always have an active pull-up resistor during
.
configuration, regardless of the value applied to the
HSWAP_EN pin. After configuration, these pull-up resistors
are controlled by
All the dedicated CONFIG-type configuration pins
(CCLK,
HSWAP_EN) have a pull-up resistor to VCCAUX.
All JTAG-type pins (TCK, TDI, TMS, TDO) have a
pull-up resistor to VCCAUX.
The INIT_B DUAL-purpose pin has a pull-up resistor to
VCCO_4 or VCCO_BOTTOM, depending on package
style.
After configuration completes, some pins have optional
behavior controlled by the configuration bitstream loaded
into the part. For example, via the bitstream, all unused I/O
pins can be collectively configured as input pins with either
a pull-up resistor, a pull-down resistor, or be left in a
high-impedance state.
Configuration Mode Settings <M2:M1:M0>
SelectMap Parallel Modes
Slave
Master
<1:1:1>
<0:1:1>
DIN (I)
D0 (I/O)
D1 (I/O)
D2 (I/O)
D3 (I/O)
D4 (I/O)
www.xilinx.com
Bitstream
Options.
PROG_B,
DONE,
M2,
M1,
Bitstream
Slave
JTAG Mode
Configuration
<1:1:0>
<1:0:1>
UnusedPin
UnusedPin
D0 (I/O)
UnusedPin
D1 (I/O)
UnusedPin
D2 (I/O)
UnusedPin
D3 (I/O)
UnusedPin
D4 (I/O)
UnusedPin
DS099-4 (v2.5) December 4, 2009
Product Specification
R
Table 78
M0,
and
Option
Persist
Persist
Persist
Persist
Persist