RM0319 datasheet(299/368 Pages) STMICROELECTRONICS

No. de pieza	RM0319

Descripción Electrónicos	SPEAr320S architecture and functionality

PDF	368 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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299 / 368 page

RM0319

Security co-processor (C3)

Doc ID 022640 Rev 3

299/368

28.3

Functional description

Figure 105. C3 block diagram

C3 is a highly programmable DMA based hardware co-processor that executes some

instructions flows (programs) written in memory by the host processor. These programs

specify which operations must be performed and where to locate data buffers (input, output,

parameters) in memory.

After being set-up C3 is completely autonomous and can perform an unlimited number of

operations, until it hits an end of program instruction in which case it can signal the end of

processing by the means of an interrupt request (if programmed to do so).

Table 89.

C3 device summary

Features

C3 version 3

Interfaces

AMBA AHB 2.0 Master Interface

AMBA AHB 2.0 Slave Interface

Instruction Dispatchers (IDS) Available

Channels Available

Coupling/Chaining Paths Available

AMBA

AHB 2.0

SIF(AHB Slave Interface)

Channel #0

Channel #1

Channel #2

Channel #7

IDS (Inst.Disp.Subsys)

IRQ

SYS

Reset

Buffer

(RAM)

RM0319 Datasheet(PDF) 299 Page - STMicroelectronics