ACEX1K datasheet(5/86 Pages) ALTERA

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Altera Corporation

ACEX 1K Programmable Logic Device Family Data Sheet

Table 5 shows ACEX 1K device performance for more complex designs.

These designs are available as Altera MegaCoreTM functions.

Each ACEX 1K device contains an embedded array and a logic array. The

embedded array is used to implement a variety of memory functions or

complex logic functions, such as digital signal processing (DSP), wide

data-path manipulation, microcontroller applications, and data-

transformation functions. The logic array performs the same function as

the sea-of-gates in the gate array and is used to implement general logic

such as counters, adders, state machines, and multiplexers. The

combination of embedded and logic arrays provides the high

performance and high density of embedded gate arrays, enabling

designers to implement an entire system on a single device.

ACEX 1K devices are configured at system power-up with data stored in

an Altera serial configuration device or provided by a system controller.

Altera offers EPC16, EPC2, EPC1, and EPC1441 configuration devices,

which configure ACEX 1K devices via a serial data stream. Configuration

data can also be downloaded from system RAM or via the Altera

MasterBlasterTM, ByteBlasterMVTM, or BitBlasterTM download cables.

After an ACEX 1K device has been configured, it can be reconfigured in-

circuit by resetting the device and loading new data. Because

reconfiguration requires less than 40 ms, real-time changes can be made

during system operation.

ACEX 1K devices contain an interface that permits microprocessors to

configure ACEX 1K devices serially or in parallel, and synchronously or

asynchronously. The interface also enables microprocessors to treat an

ACEX 1K device as memory and configure it by writing to a virtual

memory location, simplifying device reconfiguration.

Table 5. ACEX 1K Device Performance for Complex Designs

Application

LEs

Used

Performance

Speed Grade

Units

-1

-2

-3

16-bit, 8-tap parallel finite impulse response (FIR)

filter

597

192

156

116

MSPS

8-bit, 512-point Fast Fourier transform (FFT)

function

1,854

23.4

28.7

38.9

µs

113

MHz

a16450

universal asynchronous

receiver/transmitter (UART)

342

20.5

MHz

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