PCIMX536AVV8C datasheet(14/178 Pages) FREESCALE

14 / 178 page

i.MX53xA Automotive and Infotainment Applications Processors, Rev. 2

Freescale Semiconductor

Modules List

SDMA

Smart Direct

Memory Access

System

Control

Peripherals

The SDMA is multi-channel flexible DMA engine. It helps in maximizing

system performance by off loading various cores in dynamic data routing.

The SDMA features list is as follows:

• Powered by a 16-bit instruction-set micro-RISC engine

• Multi-channel DMA supports up to 32 time-division multiplexed DMA

channels

• 48 events with total flexibility to trigger any combination of channels

• Memory accesses including linear, FIFO, and 2D addressing

• Shared peripherals between ARM and SDMA

• Very fast context-switching with two-level priority-based preemptive

multi-tasking

• DMA units with auto-flush and prefetch capability

• Flexible address management for DMA transfers (increment, decrement,

and no address changes on source and destination address)

• DMA ports can handle unidirectional and bidirectional flows (copy mode)

• Up to 8-word buffer for configurable burst transfers to / from the EXTMC

• Support of byte swapping and CRC calculations

• A library of scripts and API is available

SECRAM

Secure /

Non-secure RAM

Internal

Memory

Secure / non-secure Internal RAM, controlled by SCC.

SJC

Secure JTAG

Interface

System

Control

Peripherals

JTAG manipulation is a known hacker’s method of executing unauthorized

program code, getting control over secure applications, and running code in

privileged modes. The JTAG port provides a debug access to several

hardware blocks including the ARM processor and the system bus.

The JTAG port must be accessible during platform initial laboratory

bring-up, manufacturing tests and troubleshooting, as well as for software

debugging by authorized entities. However, in order to properly secure the

system, unauthorized JTAG usage should be strictly forbidden.

In order to prevent JTAG manipulation while allowing access for

manufacturing tests and software debugging, the i.MX53xA processor

incorporates a mechanism for regulating JTAG access. SJC provides four

different JTAG security modes that can be selected through an e-fuse

configuration.

SPBA

Shared

Peripheral Bus

Arbiter

System

Control

Peripherals

SPBA (shared peripheral bus arbiter) is a two-to-one IP bus interface (IP

bus) arbiter.

SPDIF

Sony Philips

Digital Interface

Multimedia

Peripherals

A standard digital audio transmission protocol developed jointly by the Sony

and Philips corporations. Both transmitter and receiver functionalists are

supported.

Table 2. i.MX53xA Digital and Analog Blocks (continued)

Block

Mnemonic

Block Name

Subsystem

Brief Description

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