ispGDX 240VA
TM
In-System Programmable
3.3V Generic Digital Crosspoint
TM
Features
• IN-SYSTEM PROGRAMMABLE GENERIC DIGITAL
CROSSPOINT FAMILY
— Advanced Architecture Addresses Programmable
PCB Interconnect, Bus Interface Integration and
Jumper/Switch Replacement
— “Any Input to Any Output” Routing
— Fixed HIGH or LOW Output Option for Jumper/DIP
Switch Emulation
— Space-Saving PQFP and BGA Packaging
— Dedicated IEEE 1149.1-Compliant Boundary Scan
Test
• HIGH PERFORMANCE E
2
CMOS
®
TECHNOLOGY
— 3.3V Core Power Supply
— 4.5ns Input-to-Output/4.5ns Clock-to-Output Delay
— 200MHz Maximum Clock Frequency
— TTL/3.3V/2.5V Compatible Input Thresholds and
Output Levels (Individually Programmable)
— Low-Power: 16.5mA Quiescent Icc
— 24mA I
OL
Drive with Programmable Slew Rate
Control Option
— PCI Compatible Drive Capability
— Schmitt Trigger Inputs for Noise Immunity
— Electrically Erasable and Reprogrammable
— Non-Volatile E
2
CMOS Technology
• ispGDXVA™ OFFERS THE FOLLOWING ADVANTAGES
Functional Block Diagram
I/O Pins D
ISP
Control
I/O Pins C
I/O Pins A
I/O
Cells
Global Routing
Pool
(GRP)
I/O
Cells
• FLEXIBLE ARCHITECTURE
— Combinatorial/Latched/Registered Inputs or Outputs
— Individual I/O Tri-state Control with Polarity Control
— Dedicated Clock/Clock Enable Input Pins (four) or
Programmable Clocks/Clock Enables from I/O Pins (60)
— Single Level 4:1 Dynamic Path Selection (Tpd = 4.5ns)
— Programmable Wide-MUX Cascade Feature
Supports up to 16:1 MUX
— Programmable Pull-ups, Bus Hold Latch and Open
Drain on I/O Pins
— Outputs Tri-state During Power-up (“Live Insertion”
Friendly)
VA
— 3.3V In-System Programmable Using Boundary Scan
Test Access Port (TAP)
— Change Interconnects in Seconds
D
A
• DESIGN SUPPORT THROUGH LATTICE’S ispGDX
DEVELOPMENT SOFTWARE
— MS Windows or NT / PC-Based or Sun O/S
— Easy Text-Based Design Entry
— Automatic Signal Routing
— Program up to 100 ISP Devices Concurrently
— Simulator Netlist Generation for Easy Board-Level
Simulation
Copyright © 2000 Lattice Semiconductor Corporation. All brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein
are subject to change without notice.
N
1
C
Boundary
Scan
Control
Description
The ispGDXVA architecture provides a family of fast,
flexible programmable devices to address a variety of
system-level digital signal routing and interface require-
ments including:
• Multi-Port Multiprocessor Interfaces
• Wide Data and Address Bus Multiplexing
(e.g. 16:1 High-Speed Bus MUX)
• Programmable Control Signal Routing
(e.g. Interrupts, DMAREQs, etc.)
• Board-Level PCB Signal Routing for Prototyping or
Programmable Bus Interfaces
The devices feature fast operation, with input-to-output
signal delays (Tpd) of 4.5ns and clock-to-output delays of
4.5ns.
The architecture of the devices consists of a series of
programmable I/O cells interconnected by a Global Rout-
ing Pool (GRP). All I/O pin inputs enter the GRP directly
or are registered or latched so they can be routed to the
required I/O outputs. I/O pin inputs are defined as four
sets (A,B,C,D) which have access to the four MUX inputs
ED
I/O Pins B
LATTICE SEMICONDUCTOR CORP., 5555 Northeast Moore Ct., Hillsboro, Oregon 97124, U.S.A.
Tel. (503) 268-8000; 1-800-LATTICE; FAX (503) 268-8556; http://www.latticesemi.com
September 2000
gdx240va_02
LATTICE [ LATTICE SEMICONDUCTOR ]
