• ARCHITECTURE FEATURES
— Enhanced Pin-Locking Architecture with Single-
Level Global Routing Pool and SuperWIDE GLBs
— Wrap Around Product Term Sharing Array Supports
up to 35 Product Terms Per Macrocell
— Macrocells Support Concurrent Combinatorial and
Registered Functions
— Macrocell Registers Feature Multiple Control
Options Including Set, Reset and Clock Enable
— Four Dedicated Clock Input Pins Plus Macrocell
Product Term Clocks
— Slew and Skew Programmable I/O (SASPI/O™)
Supports Programmable Bus Hold, Pull-up, Open
Drain and Slew and Skew Rate Options
— Six Global Output Enable Terms, Two Global OE
Pins and One Product Term OE per Macrocell
• ispDesignEXPERT™ – LOGIC COMPILER AND COMPLETE ISP DEVICE DESIGN SYSTEMS FROM HDL
SYNTHESIS THROUGH IN-SYSTEM PROGRAMMING
— Superior Quality of Results
— Tightly Integrated with Leading CAE Vendor Tools
— Productivity Enhancing Timing Analyzer, Explore
Tools, Timing Simulator and ispANALYZER™
— PC and UNIX Platforms
Functional Block Diagram
ispLSI 5000V Description
The ispLSI 5000V Family of In-System Programmable
High Density Logic Devices is based on Generic Logic
Blocks (GLBs) of 32 registered macrocells and a single
Global Routing Pool (GRP) structure interconnecting the
GLBs.
Outputs from the GLBs drive the Global Routing Pool
(GRP) between the GLBs. Switching resources are provided to allow signals in the Global Routing Pool to drive
any or all the GLBs in the device. This mechanism allows
fast, efficient connections across the entire device.
Each GLB contains 32 macrocells and a fully populated,
programmable AND-array with 160 logic product terms
and five extra control product terms. The GLB has 68
inputs from the Global Routing Pool which are available
in both true and complement form for every product term.
The 160 product terms are grouped in 32 sets of five and
sent into a Product Term Sharing Array (PTSA) which
allows sharing up to a maximum of 35 product terms for
a single function. Alternatively, the PTSA can be bypassed for functions of five product terms or less. The
five extra product terms are used for shared GLB controls, set, reset, clock, clock enable and output enable.
The 32 registered macrocells in the GLB are driven by the
32 outputs from the PTSA or the PTSA bypass. Each
macrocell contains a programmable XOR gate, a programmable register/latch/toggle flip-flop and the
necessary clocks and control logic to allow combinatorial
or registered operation. The macrocells each have two
outputs, which can be fed back through the Global
Routing Pool. This dual output capability from the
macrocell allows efficient use of the hardware resources.
One output can be a registered function for example,
while the other output can be an unrelated combinatorial
function. A direct register input from the I/O pad facilitates efficient use of this feature to construct high-speed
input registers.
Macrocell registers can be clocked from one of several
global or product term clocks available on the device. A
global and product term clock enable is also provided,
eliminating the need to gate the clock to the macrocell
registers. Reset and preset for the macrocell register is
provided from both global and product term signals. The
macrocell register can be programmed to operate as a Dtype register, a D-type latch or a T-type flip flop.
The 32 outputs from the GLB can drive both the Global
Routing Pool and the device I/O cells. The Global Routing
Pool contains one line from each macrocell output and
one line from each I/O pin.
The input buffer threshold has programmable TTL/3.3V/
2.5V compatible levels. The output driver can source
4mA and sink 8mA in 3.3V mode. The output drivers have
a separate VCCIO reference input which is independent
of the main VCC supply for the device. This feature allows
the output drivers to drive either 3.3V or 2.5V output
levels while the device logic and the output current drive
is always powered from 3.3V. The output drivers also
provide individually programmable edge rates and open
drain capability. A programmable pullup resistor is provided to tie off unused inputs and a programmable
bus-hold latch is available to hold tristate outputs in their
last valid state until the bus is driven again by some
device.
The ispLSI 5000V Family features 3.3V, non-volatile insystem programmability for both the logic and the
interconnect structures, providing the means to develop
truly reconfigurable systems. Programming is achieved
through the industry standard IEEE 1149.1-compliant
Boundary Scan interface. Boundary Scan test is also
supported through the same interface.
An enhanced, multiple cell security scheme is provided
that prevents reading of the JEDEC programming file
when secured. After the device has been secured using
this mechanism, the only way to clear the security is to
execute a bulk-erase instruction.
ispLSI 5000V Family Members
The ispLSI 5000V Family ranges from 256 macrocells to
512 macrocells and operates from a 3.3V power supply.
All family members will be available with multiple package options. The ispLSI 5000VA Family device matrix
showing the various bondout options is shown in the table
below.
The interconnect structure (GRP) is very similar to Lattice’s
existing ispLSI 1000, 2000 and 3000 families, but with an
enhanced interconnect structure for optimal pin locking
and logic routing. This eliminates the need for registered
I/O cells or an Output Routing Pool.
Global PTOE 0
Global PTOE 1
Global PTOE 2
Global PTOE 3
Global PTOE 4
Global PTOE 5
PTSA bypass
DQ
D/T
Clk En
R/L
Clk
RP
D/T
Clk En
Clk
Delay
Slew
rate
2.5V/3.3V
Output
Open
drain
DQD
VCCIOVCCIO VCC
To GRP
Q
Register/
Latch
I/O Pad
Programmable
Speed/Power
Option
RP
6
Specifications ispLSI 5384VA
Global Clock Distribution
The ispLSI 5000V Family has four dedicated clock input
pins: CLK0 - CLK3. CLK0 input is used as the dedicated
master clock that has the lowest internal clock skew with
no clock inversion to maintain the fastest internal clock
Figure 5. ispLSI 5000V Global Clock Structure
CLK 0
CLK 1
IO/CLK 2
IO/CLK 3
speed. The clock inversion is available on the remaining
CLK1 - CLK3 signals. By sharing the pins with the I/O
pins, CLK2 and CLK3 can not only be inverted but also is
available for logic implementation through GRP signal
routing. Figure 5 shows these different clock distribution
options.
CLK0
CLK1
To GRP
CLK2
CLK3
To GRP
GSET/GRST
SET/RESET
7
Figure 6. Boundary Scan Register Circuit for I/O Pins
Specifications ispLSI 5384VA
HIGHZ
EXTEST
SCANIN
(from previous
cell)
Shift DR
Clock DR
BSCAN
Registers
DQDQ
DQ
DQ
Update DR
BSCAN
Latches
DQ
Reset
TOE
Normal
Function
EXTEST
PROG_MODE
Normal
Function
OE
SCANOUT
(to next cell)
0
1
0
1
I/O Pin
Figure 7. Boundary Scan Register Circuit for Input-Only Pins
Input Pin
SCANIN
DQ
(from previous
cell)
Shift DR
Clock DR
8
SCANOUT
(to next cell)
Specifications ispLSI 5384VA
Figure 8. Boundary Scan Waveforms and Timing Specifications
TMS
TDI
TCK
TDO
Data to be
captured
Data to be
driven out
T
btsu
T
T
btvo
T
btcl
T
btuov
btcpsu
Data Captured
T
btch
T
bth
T
btcp
T
btco
Valid DataValid Data
T
btcph
T
btuco
Valid DataValid Data
T
btoz
T
btuoz
SYMBOLPARAMETERMINMAX UNITS
t
btcpTCK [BSCAN test] clock pulse width
t
btchTCK [BSCAN test] pulse width high
t
btclTCK [BSCAN test] pulse width low
t
btsuTCK [BSCAN test] setup time
t
bthTCK [BSCAN test] hold time
t
rfTCK [BSCAN test] rise and fall time
t
btcoTAP controller falling edge of clock to valid output
t
btozTAP controller falling edge of clock to data output disable
t
btvoTAP controller falling edge of clock to data output enable
t
btcpsuBSCAN test Capture register setup time
t
btcphBSCAN test Capture register hold time
t
btucoBSCAN test Update reg, falling edge of clock to valid output
t
btuozBSCAN test Update reg, falling edge of clock to output disable
t
btuovBSCAN test Update reg, falling edge of clock to output enable
125–ns
62.5–ns
62.5–ns
25–ns
25–ns
50–mV/ns
–25ns
–25ns
–25ns
25–ns
25–ns
–50ns
–50ns
–50ns
9
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