R
Spartan-IIE FPGA Family: Pinout Tables
Pin Definitions (Continued)
Dedicated
Pad Name
Pin
Direction
Description
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
No
No
Input
Input
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.
TDI, TDO, TMS, TCK
VCCINT
Yes
Yes
Yes
Mixed
Input
Input
Boundary Scan Test Access Port pins (IEEE 1149.1).
1.8V power supply pins for the internal core logic.
VCCO
Power supply pins for output drivers (1.5V, 1.8V, 2.5V, or 3.3V
subject to banking rules in the Functional Description module.
VREF
No
Input
Input threshold reference voltage pins. Become user I/Os when
an external threshold voltage is not needed (subject to banking
rules in the Functional Description module.
GND
Yes
No
Input
Ground. All must be connected.
IRDY, TRDY
See PCI core
These signals can only be accessed when using Xilinx PCI cores.
documentation If the cores are not used, these pins are available as user I/Os.
L#[P/N]
(e.g., L0P)
No
Bidirectional
Differential I/O with synchronous output. P = positive, N =
negative. The number (#) is used to associate the two pins of a
differential pair. Becomes a general user I/O when not needed for
differential signals.
L#[P/N]_Y
(e.g., L0P_Y)
No
Bidirectional
Differential I/O with asynchronous or synchronous output
(asynchronous output not compatible for all densities in a
package). P = positive, N = negative. The number (#) is used to
associate the two pins of a differential pair. Becomes a general
user I/O when not needed for differential signals.
L#[P/N]_YY
(e.g., L0P_YY)
No
No
Bidirectional
Bidirectional
Differential I/O with asynchronous or synchronous output
(compatible for all densities in a package). P = positive, N =
negative. The number (#) is used to associate the two pins of a
differential pair. Becomes a general user I/O when not needed for
differential signals.
I/O
These pins can be configured to be input and/or output after
configuration is completed. Unused I/Os are disabled with a weak
pull-down resistor. After power-on and before configuration is
completed, these pins are either pulled up or left floating
according to the Mode pin values. See the DC and Switching
Characteristics module for power-on characteristics.
54
www.xilinx.com
DS077-4 (2.3) June 18, 2008
Product Specification
XILINX [ XILINX, INC ]
