ISPLSI2096VL-100LT128 Lattice Semiconductor, ISPLSI2096VL-100LT128 Datasheet - Page 2

• Manufacturer Part Number: ISPLSI2096VL-100LT128
• Description: 2.5V In-System Programmable SuperFAST High Density PLD
• Manufacturer: Lattice Semiconductor

noise. Device pins can be safely driven to 3.3V signal
levels to support mixed-voltage systems.
Eight GLBs, 32 I/O cells, two dedicated inputs and two
ORPs are connected together to make a Megablock (see
Figure 1). The outputs of the eight GLBs are connected
to a set of 32 universal I/O cells by the two ORPs. Each
ispLSI 2096VL device contains three Megablocks.
The GRP has as its inputs, the outputs from all of the
GLBs and all of the inputs from the bi-directional I/O cells.
All of these signals are made available to the inputs of the
GLBs. Delays through the GRP have been equalized to
minimize timing skew.
Clocks in the ispLSI 2096VL device are selected using
the dedicated clock pins. Three dedicated clock pins (Y0,
Y1, Y2) or an asynchronous clock can be selected on a
GLB basis. The asynchronous or Product Term clock can
be generated in any GLB for its own clock.
Figure 1. ispLSI 2096VL Functional Block Diagram
TMS/IN 1
TDI/IN 0
Functional Block Diagram
BSCAN
RESET
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
I/O 8
I/O 9
A0
A1
A2
A3
Output Routing Pool (ORP)
Input Bus
Output Routing Pool (ORP)
Input Bus
Routing
Global
(GRP)
Pool
2
In addition to the standard output configuration, the
outputs of the ispLSI 2096VL are individually program-
mable, either as a standard totem-pole output or an
open-drain output. The totem-pole output drives the
specified Voh and Vol levels, whereas the open-drain
output drives only the specified Vol. The Voh level on the
open-drain output depends on the external loading and
pull-up. This output configuration is controlled by a pro-
grammable fuse. The default configuration is a totem-pole
configuration. The open-drain/totem-pole option is se-
lectable through the ispDesignEXPERT software tools.
Programmable Open-Drain Outputs
Specifications ispLSI 2096VL
Output Routing Pool (ORP)
Output Routing Pool (ORP)
Input Bus
Input Bus
B7
B6
B5
B4
0917/2096VL
I/O 63
I/O 62
I/O 61
I/O 60
I/O 59
I/O 58
I/O 57
I/O 56
I/O 55
I/O 54
I/O 53
I/O 52
I/O 51
I/O 50
I/O 49
I/O 48