GRSPW datasheet(3/48 Pages) ACTEL

3 / 48 page

GRSPW / GRSPW-FT

December 2008, Version 1.0.2

GAISLER

1.3

Signal overview

The GRSPW signals are shown in figure 3. Note that the AMBA AHB and APB signals are imple-

mented VHDL records and are not shown in detail.

1.4

Implementation characteristics

The GRSPW is inherently portable and can be implemented on most FPGA and ASIC technologies.

Table 1 shows the approximate cell count and frequency for four different GRSPW configurations on

Actel RTAX.

The GRSPW core is available in VHDL source code or as a pre-synthesized netlist. It can be delivered

for stand-alone operation or with a wrapper for GRLIB AMBA plug&play interface.

Table 1. Implementation characteristics (Cells (comb. / seq.) / RAM blocks / AHB MHz / SPW MHz)

Core configuration

RTAX2000S-1

ASIC

GRSPW

3,100 (2,100 / 1,000) / 3 / 40 / 100

10,000 gates

GRSPW + RMAP

4,700 (3,450 / 1,250) / 4 / 40 / 100

15,000 gates

GRSPW-FT

3,100 (2,100 / 1,000) / 5 / 40 / 100

11,000 gates

GRSPW-FT + RMAP

4,800 (3,550 / 1,250) / 6 / 40 / 100

16,000 gates

Figure 3. Signal overview

clk

rst

txclk

swni.d

swni.s

swni.tickin

swni.clkdiv10

swno.d

swno.s

swno.tickout

SpaceWire Link

Clock & Reset

swni.timerrstval

swni.dcrstval

swni.rmapen

ahbmo

ahbmi

apbo

apbi

AMBA

Configuration

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