Lattice ispGDX 160V, ispGDX 160VA User Manual

查询160V供应商
ispGDX
TM
160V/VA
In-System Programmable
3.3V Generic Digital Crosspoint
Functional Block DiagramFeatures
— 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 E2CMOS® TECHNOLOGY — 3.3V Core Power Supply
— 3.5ns Input-to-Output/3.5ns Clock-to-Output Delay* — 250MHz Maximum Clock Frequency* — TTL/3.3V/2.5V Compatible Input Thresholds and
Output Levels (Individually Programmable)* — Low-Power: 16.5mA Quiescent Icc* — 24mA IOL Drive with Programmable Slew Rate
Control Option — PCI Compatible Drive Capability* — Schmitt Trigger Inputs for Noise Immunity — Electrically Erasable and Reprogrammable — Non-Volatile E2CMOS Technology
• ispGDXV™ OFFERS THE FOLLOWING ADVANTAGES — 3.3V In-System Programmable Using Boundary Scan
Test Access Port (TAP)
— Change Interconnects in Seconds
• 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
(40) — Single Level 4:1 Dynamic Path Selection (Tpd = 3.5ns) — 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)
• 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
* “VA” Version Only
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.
LATTICE SEMICONDUCTOR CORP., 5555 Northeast Moore Ct., Hillsboro, Oregon 97124, U.S.A. July 2000 Tel. (503) 268-8000; 1-800-LATTICE; FAX (503) 268-8556; http://www.latticesemi.com
gdx160va_04
1
Boundary
Scan
Control
Description
The ispGDXV/VA architecture provides a family of fast, flexible programmable devices to address a variety of system-level digital signal routing and interface require­ments 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 3.5ns and clock-to-output delays of
3.5ns. The architecture of the devices consists of a series of
programmable I/O cells interconnected by a Global Rout­ing 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
I/O
Cells
I/O Pins A
I/O Pins D
Global Routing
Pool
(GRP)
I/O Pins B
I/O
Cells
ISP
Control
I/O Pins C
TM
Description (Continued)
Specifications ispGDX160V/VA
found in each I/O cell. Each output has individual, pro­grammable I/O tri-state control (OE), output latch clock (CLK), clock enable (CLKEN), and two multiplexer con­trol (MUX0 and MUX1) inputs. Polarity for these signals is programmable for each I/O cell. The MUX0 and MUX1 inputs control a fast 4:1 MUX, allowing dynamic selection of up to four signal sources for a given output. A wider 16:1 MUX can be implemented with the MUX expander feature of each I/O and a propagation delay increase of
2.0ns. OE, CLK, CLKEN, and MUX0 and MUX1 inputs can be driven directly from selected sets of I/O pins. Optional dedicated clock input pins give minimum clock­to-output delays. CLK and CLKEN share the same set of I/O pins. CLKEN disables the register clock when CLKEN = 0.
Through in-system programming, connections between I/O pins and architectural features (latched or registered inputs or outputs, output enable control, etc.) can be defined. In keeping with its data path application focus, the ispGDXV devices contain no programmable logic arrays. All input pins include Schmitt trigger buffers for noise immunity. These connections are programmed into the device using non-volatile E
2
CMOS technology. Non-volatile technology means the device configuration is saved even when the power is removed from the device.
In addition, there are no pin-to-pin routing constraints for
any
1:1 or 1:n signal routing. That is,
I/O pin configured as an input can drive one or more I/O pins configured as outputs.
The device pins also have the ability to set outputs to fixed HIGH or LOW logic levels (Jumper or DIP Switch mode). Device outputs are specified for 24mA sink and 12mA source current (at JEDEC LVTTL levels) and can be tied together in parallel for greater drive. On the ispGDXVA, each I/O pin is individually programmable for
3.3V or 2.5V output levels as described later. Program­mable output slew rate control can be defined independently for each I/O pin to reduce overall ground bounce and switching noise.
All I/O pins are equipped with IEEE1149.1-compliant Boundary Scan Test circuitry for enhanced testability. In addition, in-system programming is supported through the Test Access Port via a special set of private com­mands.
The ispGDXV I/Os are designed to withstand live inser­tion system environments. The I/O buffers are disabled during power-up and power-down cycles. When design­ing for live insertion, absolute maximum rating conditions for the Vcc and I/O pins must still be met.
Table 1. ispGDXV Family Members
I/O Pins 160 I/O-OE Inputs* 40 I/O-CLK / CLKEN Inputs* 40 I/O-MUXsel1 Inputs* 40 I/O-MUXsel2 Inputs* 40 Dedicated Clock Pins** 4
EPEN 1 TOE BSCAN Interface 4
RESET
Pin Count/Package 208-Pin PQFP
* The CLK/CLK_EN, OE, MUX0 and MUX1 terminals on each I/O cell can each be assigned to
25% of the I/Os.
** Global clock pins Y0, Y1, Y2 and Y3 are multiplexed with CLKEN0, CLKEN1, CLKEN2 and
CLKEN3 respectively in all devices.
ispGDXV/VA Device
ispGDX80VA ispGDX240VA
80 20 20 20 20
2 1
1 4 1
100-Pin TQFP
ispGDX160V/VA
1
1
208-Ball fpBGA
272-Ball BGA
240
60 60 60 60
4 1
1 4 1
388-Ball fpBGA
2
Architecture
Specifications ispGDX160V/VA
The ispGDXV/VA architecture is different from traditional PLD architectures, in keeping with its unique application focus. The block diagram is shown below. The program-
The various I/O pin sets are also shown in the block diagram below. The A, B, C, and D I/O pins are grouped
together with one group per side. mable interconnect consists of a single Global Routing Pool (GRP). Unlike ispLSI devices, there are no pro­grammable logic arrays on the device. Control signals for OEs, Clocks/Clock Enables and MUX Controls must come from designated sets of I/O pins. The polarity of these signals can be independently programmed in each I/O cell.
Each I/O cell drives a unique pin. The OE control for each I/O pin is independent and may be driven via the GRP by one of the designated I/O pins (I/O-OE set). The I/O-OE set consists of 25% of the total I/O pins. Boundary Scan test is supported by dedicated registers at each I/O pin. In-system programming is accomplished through the standard Boundary Scan protocol.
I/O Architecture
Each I/O cell contains a 4:1 dynamic MUX controlled by
two select lines as well as a 4x4 crossbar switch con-
trolled by software for increased routing flexiability (Figure
1). The four data inputs to the MUX (called M0, M1, M2,
and M3) come from I/O signals in the GRP and/or
adjacent I/O cells. Each MUX data input can access one
quarter of the total I/Os. For example, in a 160 I/O
ispGDXV, each data input can connect to one of 40 I/O
pins. MUX0 and MUX1 can be driven by designated I/O
pins called MUXsel1 and MUXsel2. Each MUXsel input
covers 25% of the total I/O pins (e.g. 40 out of 160). MUX0
and MUX1 can be driven from either MUXsel1 or MUXsel2.
Figure 1. ispGDXV/VA I/O Cell and GRP Detail (160 I/O Device)
Logic “1”
Logic “0”
I/OCell 0
160 I/O Inputs
I/O Cell 159
I/O Cell 1
I/O Cell 78
I/O Cell 79
80 I/O Cells
160 Input GRP
Inputs Vertical
Outputs Horizontal
E2CMOS
Programmable
Interconnect
I/O Group A I/O Group B I/O Group C I/O Group D
Y0-Y3 Global
Clocks /
Clock_Enables
From MUX Outputs
of 2 Adjacent I/O Cells
N+2
N+1
N-1
N-2
Global
Reset
4x4
Crossbar
Switch
From MUX Outputs
of 2 Adjacent I/O Cells
80 I/O Cells
ispGDXV/VA architecture enhancements over ispGDX (5V)
4-to-1 MUX
M0 M1 M2 M3
MUX1MUX0
I/O Cell 158
To 2 Adjacent
I/O Cells above
To 2 Adjacent
I/O Cells below
I/O Cell 81
I/O Cell 80
Bypass Option
Register or Latch
A
D
B
CLK
CLK_EN
Reset
Prog.
Prog.
Bus Hold
Pull-up
Latch
(VCCIO)
C
Q
R
Prog. Open Drain
2.5V/3.3V Output
Prog. Slew Rate
Boundary Scan Cell
I/O Pin
I/O Cell N
3
Specifications ispGDX160V/VA
I/O MUX Operation
MUX1 MUX0 Data Input Selected
00 M0 01 M1 11 M2 10 M3
Flexible mapping of MUXselx to MUXx allows the user to change the MUX select assignment after the ispGDXV/ VA device has been soldered to the board. Figure 1 shows that the I/O cell can accept (by programming the appropriate fuses) inputs from the MUX outputs of four adjacent I/O cells, two above and two below. This en­ables cascading of the MUXes to enable wider (up to 16:1) MUX implementations.
The I/O cell also includes a programmable flow-through latch or register that can be placed in the input or output path and bypassed for combinatorial outputs. As shown in Figure 1, when the input control MUX of the register/ latch selects the “A” path, the register/latch gets its inputs from the 4:1 MUX and drives the I/O output. When selecting the “B” path, the register/latch is directly driven by the I/O input while its output feeds the GRP. The programmable polarity Clock to the latch or register can be connected to any I/O in the I/O-CLK/CLKEN set (one­quarter of total I/Os) or to one of the dedicated clock input pins (Yx). The programmable polarity Clock Enable input to the register can be programmed to connect to any of the I/O-CLK/CLKEN input pin set or to the global clock enable inputs (CLKENx). Use of the dedicated clock inputs gives minimum clock-to-output delays and mini­mizes delay variation with fanout. Combinatorial output mode may be implemented by a dedicated architecture bit and bypass MUX. I/O cell output polarity can be programmed as active high or active low.
allow adjacent I/O cell outputs to be directly connected
without passing through the global routing pool. The
relationship between the [N+i] adjacent cells and A, B, C
and D inputs will vary depending on where the I/O cell is
located on the physical die. The I/O cells can be grouped
into normal and reflected I/O cells or I/O hemi-
spheres. These are defined as:
Device Normal I/O Cells Reflected I/O Cells
ispGDX80VA
ispGDX160V/VA
ispGDX240VA B29-B0, A59-A0,
B9-B0, A19-A0,
D19-D10
B19-B0, A39-A0,
D39-D20
D59-D30
B10-B19, C0-C19,
D0-D9
B20-B39, C0-C39,
D0-D19
B30-B59, C0-C59,
D0-D29
Table 2 shows the relationship between adjacent I/O
cells as well as their relationship to direct MUX inputs.
Note that the MUX expansion is circular and that I/O cell
B20, for example, draws on I/Os B19 and B18, as well as
B21 and B22, even though they are in different hemi-
spheres of the physical die. Table 2 shows some typical
cases and all boundary cases. All other cells can be
extrapolated from the pattern shown in the table.
Figure 2. I/O Hemisphere Configuration of
ispGDX160V/VA
I/O cell 0 I/O cell 159
A0
D39
D20 D19
D0
C39 C0
MUX Expander Using Adjacent I/O Cells
The ispGDXV/VA allows adjacent I/O cell MUXes to be cascaded to form wider input MUXes (up to 16 x 1) without incurring an additional full Tpd penalty. However, there are certain dependencies on the locality of the adjacent MUXes when used along with direct MUX inputs.
Adjacent I/O Cells
Expansion inputs MUXOUT[n-2], MUXOUT[n-1], MUXOUT[n+1], and MUXOUT[n+2] are fuse-selectable for each I/O cell MUX. These expansion inputs share the same path as the standard A, B, C and D MUX inputs, and
I/O cell index increases in this direction
A39
B0
I/O cell 79 I/O cell 80
B19 B20
B39
Direct and Expander Input Routing
Table 2 also illustrates the routing of MUX direct inputs
that are accessible when using adjacent I/O cells as
inputs. Take I/O cell D23 as an example, which is also
shown in Figure 3.
4
I/O cell index increases in this direction
Specifications ispGDX160V/VA
Figure 3. Adjacent I/O Cells vs. Direct Input Path for ispGDX160V/VA, I/O D23
ispGDX160V/VA I/O Cell
I/O Group A D21 MUX Out I/O Group B D22 MUX Out
I/O Group C D24 MUX Out
I/O Group D D25 MUX Out
4 x 4
Crossbar
Switch
.m0 .m1 .m2 .m3
S0S1
D23
It can be seen from Figure 3 that if the D21 adjacent I/O cell is used, the I/O group “A” input is no longer available as a direct MUX input.
The ispGDXV/VA can implement MUXes up to 16 bits wide in a single level of logic, but care must be taken when combining adjacent I/O cell outputs with direct MUX inputs. Any particular combination of adjacent I/O cells as MUX inputs will dictate what I/O groups (A, B, C or D) can be routed to the remaining inputs. By properly choosing the adjacent I/O cells, all of the MUX inputs can be utilized.
Special Features
Slew Rate Control
All output buffers contain a programmable slew rate
control that provides software-selectable slew rate op-
tions.
Open Drain Control
All output buffers provide a programmable Open-Drain
option which allows the user to drive system level reset,
interrupt and enable/disable lines directly without the
need for an off-chip Open-Drain or Open-Collector buffer.
Wire-OR logic functions can be performed at the printed
circuit board level.
Pull-up Resistor
All pins have a programmable active pull-up. A typical
resistor value for the pull-up ranges from 50k to 80kΩ.
Output Latch (Bus Hold)
All pins have a programmable circuit that weakly holds
the previously driven state when all drivers connected to
the pin (including the pin's output driver as well as any
other devices connected to the pin by external bus) are
tristated.
Table 2. Adjacent I/O Cells (Mapping of ispGDX160V/VA)
Data C/
MUXOUT
Reflected
I/O Cells
Normal
I/O Cells
B20 B21 B22 B23 D16 D17 D18 D19 D20 D21 D22 D23 B16 B17 B18 B19
Data A/
MUXOUT
B22 B23 B24 B25 D18 D19 D20 D21 D18 D19 D20 D21 B14 B15 B16 B17
Data B/
MUXOUT
B21 B22 B23 B24 D17 D18 D19 D20 D19 D20 D21 D22 B15 B16 B17 B18
B19 B20 B21 B22 D15 D16 D17 D18 D21 D22 D23 D24 B17 B18 B19 B20
Data D/
MUXOUT
B18 B19 B20 B21 D14 D15 D16 D17 D22 D23 D24 D25 B18 B19 B20 B21
ispGDX160VA New Features
Unique to the ispGDX160VA are user-programmable
I/Os supporting either 3.3V or 2.5V output voltage level
options. The ispGDX160VA uses a VCCIO pin to provide
the 2.5V reference voltage when used. The ispGDX160VA
VCCIO pin occupies the same location as VCC on the
ispGDX160V, allowing drop-in replacement. The
ispGDX160VA offers improved performance by reducing
fanout delays and has PCI compatible drive capability.
Only the ispGDX160VA is available in the fastest (3.5ns)
Commercial speed grade and in -5,-7, and -9ns Industrial
grades in all packages.
The ispGDX160VA has a device ID different from the
ispGDX160V requiring that the latest Lattice download
software be used for programming and verification. Al-
though the ispGDX160VA and ispGDX160V are
functionally equivalent, they are not 100% JEDEC com-
patible. All design files must be recompiled targeting the
ispGDX160VA.
5
Applications
Specifications ispGDX160V/VA
The ispGDXV/VA Family architecture has been devel­oped to deliver an in-system programmable signal routing solution with high speed and high flexibility. The devices are targeted for three similar but distinct classes of end­system applications:
Programmable, Random Signal Interconnect (PRSI)
This class includes PCB-level programmable signal rout­ing and may be used to provide arbitrary signal swapping between chips. It opens up the possibilities of program­mable system hardware. It is characterized by the need to provide a large number of 1:1 pin connections which are statically configured, i.e., the pin-to-pin paths do not need to change dynamically in response to control in­puts.
Programmable Data Path (PDP)
This application area includes system data path trans­ceiver, MUX and latch functions. With todays 32- and 64-bit microprocessor buses, but standard data path glue components still relegated primarily to eight bits, PCBs are frequently crammed with a dozen or more data path glue chips that use valuable real estate. Many of these applications consist of on-board bus and memory inter­faces that do not require the very high drive of standard glue functions but can benefit from higher integration. Therefore, there is a need for a flexible means to inte­grate these on-board data path functions in an analogous way to programmable logics solution to control logic integration. Lattices CPLDs make an ideal control logic complement to the ispGDXV/VA in-system program­mable data path devices as shown below.
Figure 4. ispGDXV/VA Complements Lattice CPLDs
Address
Inputs
(from P)
Control
Inputs
(from P)
Data Path
Bus #1
Programmable Switch Replacement (PSR)
Includes solid-state replacement and integration of me-
chanical DIP Switch and jumper functions. Through
in-system programming, pins of the ispGDXV/VA de-
vices can be driven to HIGH or LOW logic levels to
emulate the traditional device outputs. PSR functions do
not require any input pin connections.
These applications actually require somewhat different
silicon features. PRSI functions require that the device
support arbitrary signal routing on-chip between any two
pins with no routing restrictions. The routing connections
are static (determined at programming time) and each
input-to-output path operates independently. As a result,
there is little need for dynamic signal controls (OE,
clocks, etc.). Because the ispGDXV/VA device will inter-
face with control logic outputs from other components
(such as ispLSI or ispMACH) on the board (which fre-
quently change late in the design process as control logic
is finalized), there must be no restrictions on pin-to-pin
signal routing for this type of application.
PDP functions, on the other hand, require the ability to
dynamically switch signal routing (MUXing) as well as
latch and tri-state output signals. As a result, the pro-
grammable interconnect is used to define
routes that are then selected dynamically by control
signals from an external MPU or control logic. These
functions are usually formulated early in the conceptual
design of a product. The data path requirements are
driven by the microprocessor, bus and memory architec-
ture defined for the system. This part of the design is the
earliest portion of the system design frozen, and will not
usually change late in the design because the result
would be total system and PCB redesign. As a result, the
ability to accommodate
arbitrary
any pin-to-any pin re­routing is not a strong requirement as long as the designer has the ability to define his functions with a reasonable degree of freedom initially.
possible
signal
ispMACH
System
Clock(s)
ispLSI/ Device
Control
Outputs
Buffers / RegistersState Machines
ispGDXV/VA
Device
Buffers / RegistersDecoders
Data Path
Bus #2
ISP/JTAG
Interface
Configuration
(Switch) Outputs
As a result, the ispGDXV/VA architecture has been defined to support PSR and PRSI applications (including bidirectional paths) with no restrictions, while PDP appli­cations (using dynamic MUXing) are supported with a minimal number of restrictions as described below. In this way, speed and cost can be optimized and the devices can still support the system designers needs.
The following diagrams illustrate several ispGDXV/VA applications.
6
Applications (Continued)
Specifications ispGDX160V/VA
Figure 5. Address Demultiplex/Data Buffering
XCVR
Control Bus
MUXed Address Data Bus
I/OA I/OB
OEA OEB
Address
Latch
DQ
CLK
Buffered Data
To Memory/ Peripherals
Address
Figure 6. Data Bus Byte Swapper
XCVR
I/OA
I/OB
OEA OEB
XCVR
I/OA I/OB
OEA OEB
D0-7
XCVR
I/OA I/OB
OEA OEB
XCVR
I/OA I/OB
OEA OEB
Control Bus
D0-7
Data Bus A
D8-15 D8-15
Data Bus B
Designing with the ispGDXV/VA
As mentioned earlier, this architecture satisfies the PRSI class of applications without restrictions: any I/O pin as a single input or bidirectional can drive any other I/O pin as output.
For the case of PDP applications, the designer does have to take into consideration the limitations on pins that can be used as control (MUX0, MUX1, OE, CLK) or data (MUXA-D) inputs. The restrictions on control inputs are not likely to cause any major design issues because the input possibilities span 25% of the total pins.
The MUXA-D input partitioning requires that designers consciously assign pinouts so that MUX inputs are in the appropriate, disjoint groups. For example, since the MUXA group includes I/O0-39 (160 I/O device), it is not possible to use I/O0 and I/O9 in the same MUX function. As previously discussed, data path functions will be assigned early in the design process and these restric­tions are reasonable in order to optimize speed and cost.
User Electronic Signature
The ispGDXV/VA Family includes dedicated User Elec­tronic Signature (UES) E2CMOS storage to allow users to code design-specific information into the devices to identify particular manufacturing dates, code revisions, or the like. The UES information is accessible through the boundary scan programming port via a specific com­mand. This information can be read even when the security cell is programmed.
Figure 7. Four-Port Memory Interface
4-to-1
16-Bit MUX
Bidirectional
Port #1 OE1
Port #2 OE2
Bus 4
Bus 3
Bus 2
Bus 1
Note: All OE and SEL lines driven by external arbiter logic (not shown).
Port #3 OE3
Port #4 OE4
Memory
Port
OEM
SEL0
SEL1
To Memory
Security
The ispGDXV/VA Family includes a security feature that prevents reading the device program once set. Even when set, it does not inhibit reading the UES or device ID code. It can be erased only via a device bulk erase.
7
Specifications ispGDX160VA
Absolute Maximum Ratings
1,2
Supply Voltage Vcc................................. -0.5 to +5.4V
Input Voltage Applied............................... -0.5 to +5.6V
Off-State Output Voltage Applied ............ -0.5 to +5.6V
Storage Temperature................................ -65 to 150°C
Case Temp. with Power Applied .............. -55 to 125°C
Max. Junction Temp. (TJ) with Power Applied ... 150 °C
1. Stresses above those listed under the Absolute Maximum Ratings may cause permanent damage to the device. Functional operation of the device at these or at any other conditions above those indicated in the operational sections of this specification is not implied (while programming, follow the programming specifications).
2. Compliance with the Thermal Management section of the Lattice Semiconductor Data Book or CD-ROM is a requirement.
DC Recommended Operating Conditions
SYMBOL
VCC VCCIO
PARAMETER
Supply Voltage
I/O Reference Voltage
Commercial Industrial
= 0°C to +70°C
T
A
T
= -40°C to +85°C
A
MIN. MAX. UNITS
3.00
3.00 3.60 V
2.3
3.60
3.60
Table 2-0005/gdx160va
V
V
Capacitance (TA=25oC, f=1.0 MHz)
SYMBOL
C
1
C
2
I/O Capacitance
Dedicated Clock Capacitance
PARAMETER PACKAGE TYPE
BGA, fpBGA
PQFP
BGA, fpBGA
UNITSTYPICAL TEST CONDITIONS
7PQFP
10 pf
8
10 pf
pf
pf
V = 3.3V, V = 2.0V
CC
V = 3.3V, V = 2.0V
CC Y
I/O
Table 2-0006/gdx160va
Erase/Reprogram Specifications
PARAMETER MINIMUM MAXIMUM UNITS
Erase/Reprogram Cycles 10,000 Cycles
8
Switching Test Conditions
V
CCIO
R
1
R
2
C
L
*
Device Output
Test
Point
*C
L
includes Test Fixture and Probe Capacitance.
0213D
Input Pulse Levels Input Rise and Fall Time
Input Timing Reference Levels Output Timing Reference Levels Output Load
3-state levels are measured 0.5V from steady-state active level.
Output Load Conditions (See Figure 8)
3.3V 2.5V
TEST CONDITION R1
A 35pF
Active High
B
Active Low Active High to Z
at V -0.5V
C
D 35pF
OH
Active Low to Z at V +0.5V
OL
Slow Slew
R1 R2
153
153
153
GND to V
< 1.5ns 10% to 90%
V V
See Figure 8
156
134 134
134
∞ ∞
156
156
CCIO(MIN)
CCIO(MIN) CCIO(MIN)
/2 /2
R2 CL
144 144
35pF
35pF
144
∞ ∞
Table 2-0004A/gdx160va
Specifications ispGDX160VA
Figure 8. Test Load
5pF
5pF
DC Electrical Characteristics for 3.3V Range
Over Recommended Operating Conditions
SYMBOL
VCCIO VIL VIH
VOL
VOH
I/O Reference Voltage 3.0 3.6 V Input Low Voltage Input High Voltage
Output Low Voltage
Output High Voltage
1. I/O voltage configuration must be set to VCC.
PARAMETER
VOH V VOH V
V
CC
V
CC
= V
= V
1
CONDITION MIN. TYP. MAX. UNITS
0.8
or V
OUT
or V
OUT
CC (MIN)
CC (MIN)
V
OUT OUT
V
OL (MAX) OL(MAX)
IOL = +100µA
= +24mA
I
OL
I
= -100µA
OH
I
= -12mA
OH
-0.3
2.0
– ––0.55 V
2.8
2.4 ––V
5.25
0.2
Table 2-0007/gdx160va
V V V
V
9
Specifications ispGDX160VA
DC Electrical Characteristics for 2.5V Range
1
Over Recommended Operating Conditions
SYMBOL
VCCIO VIL VIH
VOL
VOH
I/O Reference Voltage Input Low Voltage Input High Voltage
Output Low Voltage
Output High Voltage
PARAMETER
1. I/O voltage configuration must be set to VCCIO.
V
OH(MIN)
V
OH(MIN)
V
CCIO=MIN
V
CCIO=MIN
V
CCIO=MIN
V
CCIO=MIN
CONDITION MIN. TYP. MAX. UNITS
V V
, I , I
, I , I
OUT OUT
= 100µA
OL
= 8mA
OL
= -100µA
OH
= -8mA
OH
or V or V
OUT OUT
V V
OL(MAX)
OL(MAX)
2.3
-0.3
1.7
––0.2 V ––0.6 V
2.1 ––V
1.8
2.7
0.7
5.25
2.5V/gdx160va
DC Electrical Characteristics
Over Recommended Operating Conditions
SYMBOL
IIL IIH
IPU IBHLS
Input or I/O Low Leakage Current 0V V Input or I/O High Leakage Current
I/O Active Pullup Current Bus Hold Low Sustaining Current
IBHHS Bus Hold High Sustaining Current -40 ––µA IBHLO Bus Hold Low Overdrive Current ––550 µA IBHHO Bus Hold High Overdrive Current ––-550 µA IBHT IOS ICCQ
ICC
Bus Hold Trip Points
1
Output Short Circuit Current ––-250 mA
4
Quiescent Power Supply Current 16.5 mA Dynamic Power Supply Current
per Input Switching
PARAMETER
IN
(V
-0.2) V
CCIO
V
VIN 5.25V
CCIO
0V
VIN V = V
V
IN
IL (MAX)
VIN = V
IH (MIN)
0V V
IN
0V V
IN
= 3.3V, V
V
CC
= 0.5V, V
V
IL
One input toggling at 50% duty cycle, outputs open.
CONDITION MIN. TYP.2MAX. UNITS
V
IL (MAX)
V
IN
IL (MAX)
CCIO
– – – –
– – – –
40 ––µA
V
CCIO
V
CCIO
= 0.5V, TA = 25°C
OUT
= V
IH
CC
V
IL
V
See
Note 3
-10 10 50
-200
IH
mA/
V V V
V
µA µA µA µA
V
MHz
Maximum Continuous I/O Pin Sink
5
ICONT
Current Through Any GND Pin
1. One output at a time for a maximum of one second. V
= 0.5V was selected to avoid test problems by
OUT
––160 mA
tester ground degradation. Characterized, but not 100% tested.
2. Typical values are at V
= 3.3V and T
CC
= 25°C.
A
3. ICC / MHz = (0.003 x I/O cell fanout) + 0.029. e.g. An input driving four I/O cells at 40MHz results in a dynamic I
of approximately ((0.003 x 4) + 0.029) x 40 = 1.64mA.
CC
4. For a typical application with 50% of I/O pins used as inputs, 50% used as outputs or bi-directionals.
5. This parameter limits the total current sinking of I/O pins surrounding the nearest GND pin.
10
DC Char_gdx160va
External Timing Parameters
Over Recommended Operating Conditions
Specifications ispGDX160VA
1
PARAMETER
2
tpd
2
tsel
TEST COND.
fmax (Tog.) fmax (Ext.) tsu1 tsu2 tsu3 tsu4 tsuce1 tsuce2 tsuce3 th1 th2 th3 th4 thce1 thce2 thce3
2
tgco1
2
tgco2
2
tco1
2
tco2
2
ten
2
tdis
2
ttoeen
2
ttoedis twh twl trst trw tsl tsk
1. All timings measured with one output switching, fast output slew rate setting, except tsl.
2. The delay parameters are measured with Vcc as I/O voltage reference. An additional 0.5ns delay is incurred when Vccio is
used as I/O voltage reference.
#
A A
– – – – – – – – – – – – – – – –
A A A A B C B C
– – – –
D A
Data Prop. Delay from Any I/O pin to Any I/O Pin (4:1 MUX)
1
Data Prop. Delay from MUXsel Inputs to Any Output (4:1 MUX)
2
Clock Frequency, Max. Toggle
3
Clock Frequency with External Feedback
4
Input Latch or Register Setup Time Before Y
5
Input Latch or Register Setup Time Before I/O Clock
6
Output Latch or Register Setup Time Before Y
7
Output Latch or Register Setup Time Before I/O Clock
8
Global Clock Enable Setup Time Before Y
9
Global Clock Enable Setup Time Before I/O Clock
10
I/O Clock Enable Setup Time Before Y
11
Input Latch or Reg. Hold Time (Yx)
12
Input Latch or Reg. Hold Time (I/O Clock)
13
Output Latch or Reg. Hold Time (Y
14
Output Latch or Reg. Hold Time (I/O Clock)
15
Global Clock Enable Hold Time (Y
16
Global Clock Enable Hold Time (I/O Clock)
17
I/O Clock Enable Hold Time (Y
18
Output Latch or Reg. Clock (from Y
19
Input Latch or Register Clock (from Y
20
Output Latch or Register Clock (from I/O pin) to Output Delay
21
Input Latch or Register Clock (from I/O pin) to Output Delay
22
Input to Output Enable
23
Input to Output Disable
24
Test OE Output Enable
25
Test OE Output Disable
26
Clock Pulse Duration, High
27
Clock Pulse Duration, Low
28
Register Reset Delay from RESET Low
29
Reset Pulse Width
30
Output Delay Adder for Output Timings Using Slow Slew Rate
31
Output Skew (tgco1 Across Chip)
32
DESCRIPTION
x
)
x
)
x
)
x
) to Output Delay
x
) to Output Delay
x
1
( )
tsu3+tgco1
x
x
x
-3
MIN. MAX.
3.5
3.5
250
3.0
2.5
2.5
2.0
2.5
1.5
3.0
0.0
0.5
0.0
1.0
0.0
1.0
0.0
– – – – – – – –
2.0
2.0
5.0
– –
– – – – – – – – – – – – – – –
3.5
6.0
4.0
7.0
5.0
5.0
6.0
6.0
– –
8.0
3.5
0.5
166.7
-5
MIN. MAX.
5.0
5.0
4.0
3.0
4.0
3.0
2.5
1.5
4.5
0.0
1.5
0.0
1.5
0.0
1.5
0.0
– – – – – – – –
3.5
3.5
– –
– – – – – – – – – – – – – – – –
5.0
8.5
6.0
9.5
6.0
6.0
6.0
6.0
– –
14.0
5.0
0.5
143 111
10.0
UNITS
MHz MHz
ns ns
ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
11
External Timing Parameters
Over Recommended Operating Conditions
Specifications ispGDX160VA
1
PARAMETER
2
tpd
2
tsel
TEST COND.
fmax (Tog.) fmax (Ext.) tsu1 tsu2 tsu3 tsu4 tsuce1 tsuce2 tsuce3 th1 th2 th3 th4 thce1 thce2 thce3
2
tgco1
2
tgco2
2
tco1
2
tco2
2
ten
2
tdis
2
ttoeen
2
ttoedis twh twl trst trw tsl tsk
1. All timings measured with one output switching, fast output slew rate setting, except tsl.
2. The delay parameters are measured with Vcc as I/O voltage reference. An additional 0.5ns delay is incurred when Vccio is
used as I/O voltage reference.
#
A A
– – – – – – – – – – – – – – – –
A A A A B C B C
– – – –
D A
Data Prop. Delay from Any I/O pin to Any I/O Pin (4:1 MUX)
1
Data Prop. Delay from MUXsel Inputs to Any Output (4:1 MUX)
2
Clock Frequency, Max. Toggle
3
Clock Frequency with External Feedback
4
Input Latch or Register Setup Time Before Y
5
Input Latch or Register Setup Time Before I/O Clock
6
Output Latch or Register Setup Time Before Y
7
Output Latch or Register Setup Time Before I/O Clock
8
Global Clock Enable Setup Time Before Y
9
Global Clock Enable Setup Time Before I/O Clock
10
I/O Clock Enable Setup Time Before Y
11
Input Latch or Reg. Hold Time (Yx)
12
Input Latch or Reg. Hold Time (I/O Clock)
13
Output Latch or Reg. Hold Time (Y
14
Output Latch or Reg. Hold Time (I/O Clock)
15
Global Clock Enable Hold Time (Y
16
Global Clock Enable Hold Time (I/O Clock)
17
I/O Clock Enable Hold Time (Y
18
Output Latch or Reg. Clock (from Y
19
Input Latch or Register Clock (from Y
20
Output Latch or Register Clock (from I/O pin) to Output Delay
21
Input Latch or Register Clock (from I/O pin) to Output Delay
22
Input to Output Enable
23
Input to Output Disable
24
Test OE Output Enable
25
Test OE Output Disable
26
Clock Pulse Duration, High
27
Clock Pulse Duration, Low
28
Register Reset Delay from RESET Low
29
Reset Pulse Width
30
Output Delay Adder for Output Timings Using Slow Slew Rate
31
Output Skew (tgco1 Across Chip)
32
DESCRIPTION
x
)
x
)
x
)
x
) to Output Delay
x
) to Output Delay
x
1
( )
tsu3+tgco1
x
x
x
-7
MIN. MAX.
7.0
7.0
100
80
5.5
4.5
5.5
4.5
3.5
2.5
6.5
0.0
2.5
0.0
2.5
0.0
2.5
0.0
7.0
11.0
9.0
13.0
8.5
8.5
8.5
8.5
5.0
5.0
18.0
14.0
7.0
0.5
-9
MIN. MAX.
9.0
9.0
83
7.0
6.0
7.0
6.0
4.0
3.0
8.5
0.0
3.0
0.0
3.0
0.0
3.0
0.0
– – – – – – – –
6.0
6.0
– –
– – – – – – – – – – – – – – –
9.0
13.5
11.5
15.7
10.5
10.5
10.5
10.5
– –
22.0
9.0
1.0
62.5
18.0
UNITS
MHz MHz
ns ns
ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
12
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