ISPLSI2096VE-135LT128I LATTICE [Lattice Semiconductor], ISPLSI2096VE-135LT128I Datasheet - Page 2

• Manufacturer Part Number: ISPLSI2096VE-135LT128I
• Manufacturer: LATTICE [Lattice Semiconductor]

Figure 1. ispLSI 2096VE Functional Block Diagram
be programmed independently for fast or slow output
slew rate to minimize overall output switching noise.
Device pins can be safely driven to 5V 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 2096VE 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 2096VE 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.
Functional Block Diagram
TMS/IN 1
TDI/IN 0
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 2096VE 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 when the
device is in bulk erased state is totem-pole configuration.
The open-drain/totem-pole option is selectable through
the ispDesignEXPERT software tools.
Programmable Open-Drain Outputs
Specifications ispLSI 2096VE
Output Routing Pool (ORP)
Output Routing Pool (ORP)
Input Bus
Input Bus
B7
B6
B5
B4
0917/2096VE
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