XC2V8000-5BF957C Xilinx, Inc., XC2V8000-5BF957C Datasheet - Page 11

• Manufacturer Part Number: XC2V8000-5BF957C
• Description: Virtex-II 1.5V Field-Programmable Gate Array
• Manufacturer: Xilinx, Inc.

Virtex-II 1.5V Field-Programmable Gate Arrays
Input/Output Individual Options
Each device pad has optional pull-up, pull-down, and
weak-keeper in LVTTL and LVCMOS SelectI/O configura-
tions, as illustrated in
The optional weak-keeper circuit is connected to each out-
put. When selected, the circuit monitors the voltage on the
pad and weakly drives the pin High or Low. If the pin is con-
Module 2 of 4
4
registers
Shared
by all
(O/T) CLK1
(O/T) CLK2
Program
Delay
(O/T) CE
(O/T) 1
(O/T) 2
REV
SR
Figure
OBUF
Program Current
Figure 4: Register / Latch Configuration in an IOB Block
5. Values of the optional
Figure 5: LVTTL, LVCMOS or PCI SelectI/O Standards
V CCO
IBUF
V CCO
D1
CE
CK1
D2
CE
CK2
Clamp
Diode
SR REV
SR REV
www.xilinx.com
FF
LATCH
FF
LATCH
1-800-255-7778
Q1
Q2
Attribute INIT1
Attribute INIT1
10-60KΩ
10-60KΩ
pull-up and pull-down resistors are in the range 10 - 60 K
which is the specification for V
(from 3.0 to 3.6 V only). The clamp diode is always present,
even when power is not.
nected to a multiple-source signal, the weak-keeper holds
the signal in its last state if all drivers are disabled. Maintain-
DDR MUX
FF1
FF2
V CCO
INIT0
SRHIGH
SRLOW
INIT0
SRHIGH
SRLOW
Keeper
Weak
Reset Type
DS031-2 (v1.8) October 12, 2001
Advance Product Specification
CCO
SYNC
ASYNC
when operating at 3.3 V
DS031_25_110300
(OQ or TQ)
V CCAUX = 3.3V
V CCINT = 1.5V
DS031_23_011601
PAD
W
R
,