SPEAR600 datasheet(23/97 Pages) STMICROELECTRONICS

23 / 97 page

SPEAr600

Architecture overview

Doc ID 16259 Rev 3

23/97

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4 dual port memory cuts (1024 words x 32 bits)

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Clock system constituted by:

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5 clocks coming from the external balls

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4 clocks coming from the integrated frequency synthesizers

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CPU core clock frequency

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Pll2 frequency

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48 MHz clock (USB Pll)

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30 MHz clock (Main Oscillator)

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32.768 kHz clock (RTC Oscillator)

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APB clock (programmable)

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AHB clock (programmable)

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User Configurable sync/async clock towards Memory Controller port 2 (M2)

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Connection with 84/112 I/Os

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Connection with 9 LVDS lines

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12 interrupt lines towards CPU1 and CPU2

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64 interrupt input lines from the various platform IP sources

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16 peripheral DMA request lines

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64 user configurable (in the SoC) general purpose input lines

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64 user configurable (in the RAS) general purpose output lines

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SoC dynamic power management control interface;

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50 specific ATE Test interface signals dedicated to RAS

2.25

External Port Controller (EXPI I/F)

The port controller is a socket communication interface between the SPEAr600 and an

external FPGA device; it implements a simple AHB bidirectional protocol used to compress

a couple of std AHB master/slave bus onto 84 PL_GPIOs and 4 PL_CLK primary signals.

Caution:

PL_GPIO pins are not configurable by software.

ST provide a symmetric port controller logic solution to be embedded inside the external

FPGA with the purpose of interfacing the EXPI bus directly and decompressing the same

pair of AHB master/slave ports on the FPGA side in order to interconnect the customer logic

as follows (more slave and master agents can be connected to the EXPI):

SPEAr600_AHB-master >> FPGA_AHB-slave

SPEAr600_AHB-slave << FPGA_AHB-master (AHB-full)

The EXPI interface is based on two main groups of signals:

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AHB bidirectional signal bus driven alternatively from the SPEAr600 and FPGA side.

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Unidirectional signals continuously driven from both the SPEAr600 and FPGA sides.

Table 36: EXPI - pad signal assignment lists the EXPI signal names. Further details in these

signals are given in the SPEAr600 user manual (UM0510)

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