99
R
Spartan-II FPGA Family:
Pinout Tables
Product Specification
information for the standard package applies equally to the
Pb-free package.
DS001-4 (v2.8) June 13, 2008
Introduction
This section describes how the various pins on a
Spartan
®
-II FPGA connect within the supported component
packages, and provides device-specific thermal
characteristics. Spartan-II FPGAs are available in both
standard and Pb-free, RoHS versions of each package,
with the Pb-free version adding a “G” to the middle of the
package code. Except for the thermal characteristics, all
Table 35:
Pin Definitions
Pin Name
GCK0, GCK1, GCK2,
GCK3
M0, M1, M2
CCLK
PROGRAM
DONE
INIT
BUSY/DOUT
Dedicated
No
Yes
Yes
Yes
Yes
No
No
Direction
Input
Input
Input or Output
Input
Bidirectional
Bidirectional
(Open-drain)
Output
Pin Types
Most pins on a Spartan-II FPGA are general-purpose,
user-defined I/O pins. There are, however, different
functional types of pins on Spartan-II FPGA packages, as
outlined in
Description
Clock input pins that connect to Global Clock Buffers. These pins become
user inputs when not needed for clocks.
Mode pins are used to specify the configuration mode.
The configuration Clock I/O pin. It is an input for slave-parallel and slave-serial
modes, and output in master-serial mode.
Initiates a configuration sequence when asserted Low.
Indicates that configuration loading is complete, and that the start-up
sequence is in progress. The output may be open drain.
When Low, indicates that the configuration memory is being cleared. This pin
becomes a user I/O after configuration.
In Slave Parallel mode, BUSY controls the rate at which configuration data is
loaded. This pin becomes a user I/O after configuration unless the Slave
Parallel port is retained.
In serial modes, DOUT provides configuration data to downstream devices in
a daisy-chain. This pin becomes a user I/O after configuration.
D0/DIN, D1, D2, D3, D4,
D5, D6, D7
No
Input or Output
In Slave Parallel mode, D0-D7 are configuration data input pins. During
readback, D0-D7 are output pins. These pins become user I/Os after
configuration unless the Slave Parallel port is retained.
In serial modes, DIN is the single data input. This pin becomes a user I/O after
configuration.
WRITE
CS
TDI, TDO, TMS, TCK
V
CCINT
V
CCO
V
REF
GND
IRDY, TRDY
No
No
Yes
Yes
Yes
No
Yes
No
Input
Input
Mixed
Input
Input
Input
Input
See PCI core
documentation
In Slave Parallel mode, the active-low Write Enable signal. This pin becomes
a user I/O after configuration unless the Slave Parallel port is retained.
In Slave Parallel mode, the active-low Chip Select signal. This pin becomes a
user I/O after configuration unless the Slave Parallel port is retained.
Boundary Scan Test Access Port pins (IEEE 1149.1).
Power supply pins for the internal core logic.
Power supply pins for output drivers (subject to banking rules)
Input threshold voltage pins. Become user I/Os when an external threshold
voltage is not needed (subject to banking rules).
Ground.
These signals can only be accessed when using Xilinx
®
PCI cores. If the
cores are not used, these pins are available as user I/Os.
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DS001-4 (v2.8) June 13, 2008
Product Specification
Module 4 of 4
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